API CATALOG. Flanged Safety Relief Valves Series 526. The-Safety-Valve.com

API Flanged Safety Relief Valves Series 526 CATALOG The-Safety-Valve.com

NH 3 HCL Product Range LESER Safety Valves for every industrial application API High Performance Series 526 Type 526 Compact Performance Clean Service H 2 SO 4 HNO 3 Critical Service Modulate Action Best Availability

Contents Chapter/Page General /1 Applications, General design features /2 Valve finder /3 How to use: Signs and symbols, Flange drillings and facings /5 How to use: Selection charts /6 How to use: Capacity sheets /7 LEO S/G /9 LEO L /1 Sour gas service /11 Type 526 1/1 Materials 1/2 1/4 How to order Numbering system 1/6 Article numbers Overview 1/8 Dimensions Metric Units 1/1 US Units 1/12 Weights Metric Units 1/14 US Units 1/15 Orifice D T 1/16 Selection chart 1/16 Article numbers, dimensions and weights 1/17 Pressure temperature ratings 1/18 Flange drillings 1/72 Flange facings 1/73 Cap H2 Closed bonnet Plain lever H3 Closed bonnet Packed lever H4 Closed bonnet Type 526 Outlet with flange rating class 3 Overview 1/74 Spare parts 1/76 Available options 1/84 Approvals 1/85 Capacities Steam [Metric Units + US Units] 1/86 Air [Metric Units + US Units] 1/88 Water [Metric Units + US Units] 1/9 Determination of coefficient of discharge K dr /α w 1/92 Options 99/1 Caps and levers 99/2 Caps and levers bolted 99/4 Metal seat 99/6 Soft seal disc 99/8 Soft seal selection 99/1 Soft seal 99/11 Balanced bellows 99/12 High temperature equipment 99/14 Lift indicator 99/15 Heating jacket 99/16 O-ring damper 99/18 First in safety Fax Order Plain lever H3 Open bonnet Cap H2 Closed bonnet Options Type 526 General D E F G H J K L M N P Q R T

General General Information LESER API Safety Valves The API product group represents Full range of spring loaded safety valves acc. to API 526 State-of-the-art design from the safety valve specialist Competitive solutions for the API market LESER s API safety valves Are designed to meet all applications which require API. Open rapidly with an overpressure of max. 1 % to the full design lift. Have a maximum blowdown of minus 7 % for steam/gas service and minus 2 % for liquid service. Are developed in a close cooperation with plant engineers and service specialists. Serve for protection of processes and equipment. Are approved by all important approval organisations worldwide which ensures the worldwide applicability e.g.: European Community: CE-marking acc. to Pressure Equipment Directive (PED) 97 / 23 / EC and EN ISO 4126-1 USA: UV-stamp acc. to ASME Section VIII Division 1, National Board certified capacities Germany: VdTÜV approval acc. to PED, EN ISO 4126-1, TÜV SV 1 and AD 2-Merkblatt A2 Canada: Canadian Registration Number acc. to the requirements of particular provinces China: AQSIQ based on the approval acc. to ASME Section VIII Division 1 and AD 2-Merkblatt A2 Furthermore, all LESER API safety valves are designed, marked, produced and approved acc. to the requirements of the following regulations (directives, codes, rules and standards). EN ISO 4126-7, EN 12266-1/-2, EN 192 Part I and II flanging ASME PTC 25, ASME-Code Sec. II, ASME B 16.34 and ASME B16.5- flanging, API Std. 527, API RP 576 AD 2-Merkblatt A4, AD 2-Merkblatt HP, TRD 11, TRD 421, TRD 721 /1 LWN 48.1-E

General Information General Applications General Design Features LESER API Safety Valves offer ultimate protection against overpressures in all applications for steam, gases and liquids. LESER s API Safety Valves cover a large variety of types, materials and options to fit any application: LESER s API Series 526 Safety valves present the simple safe solution for heavy duty applications, such as crude oil extraction, transportation and processing in Refineries Chemical industry Petrochemical industry Oil and gas Onshore and Offshore Vessels and piping systems Blow-down systems Storage tank farms Design fully in accordance with API 526 for easy interchangeability Complete API 526 range: valve sizes 1" through 8", orifice D through T Materials: WCB, WCC, CF8M, WC6, LCB, LCC, 1.619 and a wide range of special materials to fulfill the requirements of critical applications Special B 3 design for high back pressure applications and material requirements far beyond API Standard Fool proof design with fewer parts for built-in safety Integral cast support brackets for easy handling and safe installation Open or closed bonnet, packed or plain lifting lever or gastight cap Flanged connections according ASME and DIN guarantee a worldwide applicability One design and spring (single trim) for steam, gas and liquid applications reduces the number of spare parts and ensures low cost maintenance management. One-piece spindle reduces friction which leads to high operation accuracy Self-draining body design, avoids residues and reduces corrosion LESER s API Safety Valves can be customized with a great variety of options, e.g.: Special connections specified by the customer for optimised adaptation to the plant. Stellited or hardened metal sealing for longer product life Soft seat solutions for superior tightness Stainless steel bellows for back pressure compensation Heating jackets for applications with high viscosity fluids Any and every part can be produced in special material exactly to meet customer specification requirements LWN 48.1-E /2

General Valve finder How to find the right Product Group Orifice > F High Performance Required Orifice letter? Orifice < F Compact Performance No Liquid application and low capacity depending on Valve size? Yes Modulate Action No API specified application? Yes API No Critical Service / High Corrosive application? Yes Critical Service No Clean Service application? Yes Clean Service How to find the right Safety Valve Product Group /3 LWN 48.1-E

Valve finder How to find the right API Safety Valve General Step Procedere Reference 6 LESER Type 526 5 Determination of the code for lifting device Cap H2 Plain lever H3 Packed lever H4 Plain lever H3 Open bonnet Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 4 Determination of: Flange rating class Article No. Type 526 Orifice D Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 WCB 5262.1X 5262.2X 5262.3X 5262.4X 5262.5X WC6 5267.6X 5267.7X 5267.8X 5267.9X WCB WC6 T [ F] Selection chart p [bar] 25 5 75 1 15 2 25 3 35 4 1 9 4 8 7 3 6 5 2 4 3 1 2 1 T [ C] Specification table Article numbers, dimensions and weights Article numbers Valve size 1 D 2 1 D 2 1 D 2 Flange rating class 15 x 15 3L x 15 3 x 15 Inlet x Outlet Actual Orifice diameter d [mm] 14 14 14 Actual Orifice area A [mm 2 ] 154 154 154 Body material WCB 1.619 Art.-No. 5262.1 5262.2 CF8M 1.448 Art.-No. 5264.1 5264.11 Use 1 D 2 3 x 15 WC6 1.7357 Art.-No. 5267.6 LCB Art.-No. 5263.5 5263.51 5 1 15 2 3 4 5 6 p [psig] 3 Determination of the material Corrosive service Temperature < -29 C < -2 F Application Temperature -46 to 343 C -5 to 65 F Non-corrosive service Temperature -29 C -2 F Selection chart CF8M Selection chart CF8M LCB (ASME B16.34) Selection chart WCB/WC6 2 Determination of the required orifice letter (sizing) For Orifice > T see Type 441 XXL API RP 52 VALVESTAR (Sizing software) Capacity table Sizing, Selection and Installation of Pressure- Relieving Devices in Refineries Part I Sizing and Selection API RECOMMENDED PRACTICE 52 SEVENTH EDITION, JANUARY 2 Capacities Steam Capacities for saturated steam according to AD 2-Merkblatt A2, based on plus 1 % overpressure. Capacities at 1 bar (14,5 psig) and below are based on,1 bar (1,45 psig) overpressure. ) Metric Units AD 2-Merkblatt A2 [kg/h] D E F G H Orifice Act. Orifice dia. d [mm] 14 14 18 22,5 28,3 Act. Orifice area A [mm 2 ] 154 154 254 398 629 LEOS/G* [inch 2 ],111,196,324,56,81 Set pressure [bar] Capacities [kg/h],2 19 54 89 139 221,5 42 9 149 232 367 1 71 134 221 345 546 2 12 217 359 561 888 3 166 296 489 764 129 1 Application data: Pressure, temperature Capacity Fluid Fluid LESER Type 526 offers single trim for steam, gas and liquids in one design. Steam Gases Liquids How to find the right API Safety Valve LWN 48.1-E /4

General How to use General signs and symbols * This option is covered by standard design Available Not possible Signs and symbols for flange drillings and flange facings * ( * ) Standard design, no option code required Flange dimensions except flange thickness are in accordance with flange standard (e.g. ASME B16.5) Flange thickness is smaller (max. 2 mm), see Multiple pressure rating Flange drilling/facing is not possible Option code for flange drilling and dimension, e.g. H5 H5 (H5) [H5] Flange drilling as specified in flange standard Outer flange diameter, flange thickness and height of flange facing may be larger, see Dimensions Flange dimensions except flange thickness are in accordance with standard Flange thickness is smaller (max. 2 mm), see Multiple pressure rating Flange drilling as specified in standard/flange thickness may be smaller Outer flange diameter is smaller than required, but complete back side facing for nut is assured Option code for flange facing, e.g. L38 L38 Flange facing as specified in flange standard General information concerning flange drillings and flange facings Flange dimensions of LESER Type 526 exceed flange dimension as mentioned in ASME / ANSI B16.5 and DIN EN 192. This exceedance is in accordance with API Standard 526, Section 2.4. Dimensions Multiple pressure rating Smooth finish Stock finish Dimensions: For some valve designs, the inlet raised face height may substantially exceed the nominal dimension specified in ASME / ANSI B16.5 (and DIN EN 192). Consult the manufacturer for exact dimension. The reason for this exceedance is: - height of nozzle placed in the inlet of valve - due to the outer diameter of the nozzle thread flange thickness has to be thicker than normal ASME / ANSI B16.5 and DIN EN 192 dimension to achieve the required pressure rating The flange standard shows the same drilling, facing and outer diameter for several pressure ratings, e.g. PN 16 up to PN 4 Due to the pressure rating of the casting LESER fulfills the requirements for flange thickness e.g. of PN 16 but not PN 4 The effective MSS SP-6 (Edition 21) does not mention smooth finish anymore. In MSS SP-6 (Edition 198) smooth finish is defined for finishes of contact flanges as 25 µinch (6,3 µm) AARH max.. LESER supplies flange facings according to ASME B16.5 1996, paragraph 6.4.4.3: Either a serrated concentric or serrated spiral finish resulting in service finish from 125 µinch to 25 µinch average roughness shall be furnished. This finish meets the requirements of MSS SP-6 (Edition 198), which is not valid anymore! Stock finish is not defined in any technical standard. If purchase orders show stock finish LESER supplies standard facing according to DIN or ASME (marked with * in table Flange facings of each valve series). Materials Please find below a summary of material codes at LESER. Please note that - for every body material an inspection certificate 3.1 according to EN 124 is available - many materials have a multiple inspection certificate 3.1. Material code Flanged safety valve body Body material is certified with 3.1 (EN 124) for the following materials EN ASME 2 Carbon steel 1.619 WCB, WCC 3 Low temperature carbon steel 1.619 LCB, LCC, WCB, WCC 4 Stainless steel 1.448 CF8M (Charpy test at -196 C) 7 High temperature carbon steel 1.7357 WC6 /5 LWN 48.1-E

How to use Selection charts General The pages 1/16 1/71 contain selection charts and specification tables. They specify important data about the valves based on the API 526 fifth edition 22 like Valve size Body materials Flange rating classes Set pressure and temperature limits Back pressure limits Procedure Step Procedure Reference 1 2 Determination of the required flow area and orifice letter (sizing) Determination of: Material Flange rating class Article No. API RP 52 VALVESTAR Sizing software Capacity tables (page 1/86 1/91) Selection charts (page 1/16 1/68) or Specification tables (page 1/17 1/71) 3 Determination of the material Specification tables (page 1/17 1/71) 4 Determination of the code for lifting device Specification tables (page 1/17 1/71) Type 526 Orifice D 3 5 Selection chart 4 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 WCB 5262.1X 5262.2X 5262.3X 5262.4X 5262.5X WC6 5267.6X 5267.7X 5267.8X 5267.9X 6 1 1 p [bar] 241,4 25 5 75 1 15 2 25 3 35 4 5 WCB WC6 9 4 8 7 3 6 2 2 5 217 48 2 4 6 3 1 2 T [ F] T [ C] 1 35 5 1 15 2 3 4 5 6 p [psig] 1 Explanation No. Description Example 1 2 3 4 5 6 Set pressure p 241,4 bar 35 psig Temperature T 217 C 48 F Required orifice letter D Flange rating class 25 x 3 Material WCB 1.619 Article No. (X = Code for lifting device) 5262.5X LWN 48.1-E /6

General How to use Sample Capacity sheet How to select capacities for steam: Type 526, Valve size 1 F 2 Type 526 Capacities Steam Capacities for saturated steam according to AD 2-Merkblatt A2, based on plus 1 % overpressure. 8 Capacities at 1 bar (14,5 psig) and below are based on,1 bar (1,45 psig) overpressure. Capacities for saturated steam according to ASME Section VIII (UV), based on plus 1% overpressure. Capacities at 2,7 bar (3 psig) and below are based on,27 bar (3 psig) overpressure. Metric Units 1 AD 2-Merkblatt A2 [kg/h] Orifice D E F 2 G H Act. Orifice dia. d [mm] 14 14 3 18 22,5 28,3 Act. Orifice area A [mm 2 ] 154 154 254 4 398 629 LEOS/G* ) [inch 2 ],111,196 5,324,56,81 Set pressure [bar] Capacities [kg/h],2 6 19 54 89 139 221,5 42 9 149 232 367 1 71 134 221 7 345 546 2 12 217 359 561 888 3 166 296 489 764 129 US Units ASME Section VIII [lb/h] Orifice D E F G H Act. Orifice dia. d [inch],551,551,79,886 1,11 Act. Orifice area A [inch 2 ],239,239,394,616,975 LEOS/G* ) [inch 2 ],111,196,324,56,81 Set pressure [psig] Capacities [lb/h] 15 183 321 531 83 1313 2 211 371 613 957 1515 3 266 469 775 1212 1917 4 328 577 954 1491 2359 5 389 686 1133 1771 282 * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /9 Explanation Type 526, Valve size 1 F 2 No. Description Metric Units US Units Example 1 Code AD 2-Merkblatt A2 2 Orifice F 3 Actual orifice diameter d [mm] [inch] 18 4 Actual orifice area A [mm 2 ] [inch 2 ] 254 5 LESER Effective Orifice LEO S/G [inch 2 ] [inch 2 ],324 6 Set pressure [bar g ] [psig] 1 7 Capacity [kg/h] [lb/h] 221 8 Base of calculation see table page /8 /7 LWN 48.1-E

How to use General 8 Base of calculation Metric Units US Units Code Capacity calculation according to AD 2-Merkblatt A2 Capacity calculation according to ASME Section VIII (UV) Media STEAM (saturated steam) Standard conditions Steam table IAPWS-IF97 IAPWS Industrial Formulation for the Thermodynamic Properties of Water and Steam [kg/h] Steam table IAPWS-IF97 IAPWS Industrial Formulation for the Thermodynamic Properties of Water and Steam [lb/h] AIR Standard conditions C and 113 mbar [m n 3 /h] 16 C (6 F) [S.C.F.M.] WATER Standard conditions 2 C (68 F) [1 3 kg/h] 21 C (7 F) [US-G.P.M.] All Media Calculation pressure Set pressure plus 1 % overpressure Set pressure plus 1 % overpressure Calculation pressure for low Capacities at 1 bar (14,5 psig) and below are based on,1 bar (1,45 psig) overpressure. Capacities at 2,7 bar (3 psig) and below are based on,27 bar (3 psig) overpressure. Example Capacity calculation pressure Metric Units US Units Set pressure Capacity calculation pressure Set pressure Capacity calculation pressure 1 bar 1 bar + 1% overpressure = 11 bar 145 psig 145 psig + 1% overpressure = 159,5 psig,5 bar,5 bar +,1 bar overpressure =,6 bar 2 psig 2 psig + 3 psig overpressure = 23 psig 5 LESER Effective Orifice Pressure relief devices may be initially sized using the equations shown in API RP 52, sections 3.6 through 3.1 as appropriate for vapors, gases, liquids, or two phase flow. These equations utilize effective coefficient of discharge (S/G,975, L,65) and effective areas (acc. to API Std. 526, Fifth Edition, June 22, table 1) which are independent of any specific valve design. In this way the designer can determine a preliminary pressure relief valve size. By using the LESER Effective Orifice the designer can directly select a LESER safety relief valve after calculating the oriffice letter. In this case, a verification of the sizing with the selected actual orifice and the rated coefficient of discharge is not necessary. LEO S/G LESER Effective Orifice (for steam, gas and vapor) [inch 2 ] refer to page /9 LEO L LESER Effective Orifice (for liquid) [inch 2 ] refer to page /1 For further information refer to LESER Engineering Handbook LWN 48.1-E /8

General LEOS/G This table is based on the rated coefficient of discharge for steams and gases of LESER safety valves certified by ASME. The appropriated K-values are shown in the column K-value of the table. LEO S/G [inch 2 ] = A [inch 2 ]. ( K ),975 LEOS/G LESER Effective Orifice (for steam, gas and vapor) Orifice acc. API 526 Flange rating class Valve size d [inch] d [mm] K-value LEOS/G [inch 2 ] % of higher orifice % of lower orifice D,11 1,% 1,% 15 6 1 D 2,551 14,,455,111 56,8% 11,2% 9 15 1 1 / 2 D 2,551 14,,455,111 56,8% 11,2% 25 1 1 / 2 D 3,551 14,,455,111 56,8% 11,2% E,196 1,% 1,% 15 6 1 E 2,551 14,,81,196 63,9% 1,% 9 15 1 1 / 2 E 2,551 14,,81,196 63,9% 1,% 25 1 1 / 2 E 3,551 14,,81,196 63,9% 1,% F,37 1,% 1,% 15 6 1 1 / 2 F 2,79 18,,81,324 64,4% 15,5% 9 25 1 1 / 2 F 3,79 18,,81,324 64,4% 15,5% G,53 1,% 1,% 15 9 1 1 / 2 G 3,886 22,5,81,56 64,5% 1,7% 15 25 2 G 3,886 22,5,81,56 64,5% 1,7% H,785 1,% 1,% 15 3L 1 1/ 2 H 3 1,114 28,3,81,81 62,2% 12,% 3 15 2 H 3 1,114 28,3,81,81 62,2% 12,% J 1,287 1,% 1,% 15 3L 2 J 3 1,417 36,,81 1,296 7,5% 1,7% 3 15 3 J 4 1,417 36,,81 1,296 7,5% 1,7% K 1,838 1,% 1,% 15 6 3 K 4 1,693 43,,81 1,849 64,8% 1,6% 9 15 3 K 6 1,693 43,,81 1,849 64,8% 1,6% L 2,853 1,% 1,% 15 3L 3 L 4 2,16 53,5,81 2,863 79,5% 1,3% 3 15 4 L 6 2,16 53,5,81 2,863 79,5% 1,3% M 3,6 1,% 1,% 15 9 4 M 6 2,374 6,3,81 3,637 83,8% 11,% N 4,34 1,% 1,% 15 9 4 N 6 2,598 66,,81 4,357 68,3% 1,4% P 6,38 1,% 1,% 15 9 4 P 6 3,15 8,,81 6,41 57,9% 1,3% Q 11,5 1,% 1,% 15 6 6 Q 8 4,154 15,5,81 11,132 69,6% 1,7% R 16, 1,% 1,% 15 6 R 8 4,98 126,5,81 16,4 61,6% 1,% 3 6 6 R 1 4,98 126,5,81 16,4 61,6% 1,% T 26, 1,% 1,% 15 3 8 T 1 6,358 161,5,81 26,85 1,3% /9 LWN 48.1-E

LEOL General This table is based on the rated coefficient of discharge for steams and gases of LESER safety valves certified by ASME. The appropriated K-values are shown in the column K-value of the table. LEO L [inch 2 ] = A [inch 2 ]. ( K ),65 LEO L LESER Effective Orifice (for liquid) Orifice acc. API 526 Flange rating class Valve size d [inch] d [mm] K-value LEOL [inch 2 ] % of higher orifice % of lower orifice D,11 1,% 1,% 15 6 1 D 2,551 14,,343,126 64,2% 114,5% 9 15 1 1 / 2 D 2,551 14,,343,126 64,2% 114,5% 25 1 1 / 2 D 3,551 14,,343,126 64,2% 114,5% E,196 1,% 1,% 15 6 1 E 2,551 14,,579,213 69,2% 18,4% 9 15 1 1 / 2 E 2,551 14,,579,213 69,2% 18,4% 25 1 1 / 2 E 3,551 14,,579,213 69,2% 18,4% F,37 1,% 1,% 15 6 1 1 / 2 F 2,79 18,,579,351 69,8% 114,4% 9 25 1 1 / 2 F 3,79 18,,579,351 69,8% 114,4% G,53 1,% 1,% 15 9 1 1 / 2 G 3,886 22,5,579,549 69,9% 19,1% 15 25 2 G 3,886 22,5,579,549 69,9% 19,1% H,785 1,% 1,% 15 3L 1 1/ 2 H 3 1,114 28,3,579,868 67,5% 11,6% 3 15 2 H 3 1,114 28,3,579,868 67,5% 11,6% J 1,287 1,% 1,% 15 3L 2 J 3 1,417 36,,579 1,45 76,5% 19,2% 3 15 3 J 4 1,417 36,,579 1,45 76,5% 19,2% K 1,838 1,% 1,% 15 6 3 K 4 1,693 43,,579 2,5 7,3% 19,1% 9 15 3 K 6 1,693 43,,579 2,5 7,3% 19,1% L 2,853 1,% 1,% 15 3L 3 L 4 2,16 53,5,579 3,14 86,2% 18,8% 3 15 4 L 6 2,16 53,5,579 3,14 86,2% 18,8% M 3,6 1,% 1,% 15 9 4 M 6 2,374 6,3,579 3,943 9,9% 19,5% N 4,34 1,% 1,% 15 9 4 N 6 2,598 66,,579 4,724 74,% 18,8% P 6,38 1,% 1,% 15 9 4 P 6 3,15 8,,579 6,94 62,8% 18,8% Q 11,5 1,% 1,% 15 6 6 Q 8 4,154 15,5,579 12,7 75,4% 19,2% R 16, 1,% 1,% 15 6 R 8 4,98 126,5,579 17,353 66,7% 18,5% 3 6 6 R 1 4,98 126,5,579 17,353 66,7% 18,5% T 26, 1,% 1,% 15 3 8 T 1 6,358 161,5,579 28,283 18,8% LWN 48.1-E /1

General Sour gas service (H 2 S) Normative basis In accordance with NACE standard MR 175-23 sour gas service means the presence of H 2 S in the following conditions: Part 1.4.1.1.: All gas, gas condensate, and sour crude oil When the partial pressure of H 2 S in a wet (water as a liquid) gas phase of a gas, gas condensate, or crude oil system is equal to or exceeds,3 bar g (,5 psia) Exceptions are: Part 1.4.2.1.: Low-pressure gas: When the total pressure is lower than 4,5 bar a (65psia) Part 1.4.2.2.: Low-pressure oil and gas multiphase systems: Other Sour gas standards: NACE MR 13-23: Materials resistance to sulfide stress cracking in corrosive petroleum refining environments. DIN EN ISO 15156-1: Petroleum and natural gas industries Materials for use in H 2 S-containing environments in oil and gas production Part 1: General principles for selection of cracking-resistant materials (ISO 15156-1:21) Miscellaneous Workstandards: Please refer to LWN 1.91 General requirements for sour gas service The above mentioned standards require a maximum hardness of 22 HRC for the most steels. For the actual requirements of a specific material please refer to the applied standard. LESER sour gas level General: Sour gas material requirements must be fulfilled if pressure and partial pressure conditions according to the applied standard exist. Based on these general statement LESER defines two sour gas level for safety valves: Part definition Level 1 Level 2 Contact with the medium in closed position Contact with the medium in opened position Conventional Balanced bellows Conventional Balanced bellows Contact area Pressure requirements Set pressure 4,5 bar a (65psia) Back pressure 4,5 bar a (65psia) Safety valve operation closed closed / opened Parts concerned Necessary material modification Type 5262 5263 5267 Body material WCB 1.619 LCB WC6 1.7357 Conventional design Balanced bellows design Nozzle Disc Nozzle Disc All Nozzle Disc Bonnet spacer Bellows Design Part Material Option code Material Option code Conventional Balanced bellows Disc Disc 1.444 / 316L stellited 1.444 / 316L stellited J25 J25 Please choose balanced bellows design 1.444 / 316L J25 stellited Bellows 1.4571 / 316Ti J78 1.4571 / 316Ti J78 5264 CF8M 1.448 Conventional No modification required No modification required Balanced bellows Bellows 1.4571 / 316Ti J78 1.4571 / 316Ti J78 /11 LWN 48.1-E

Type Type 526 Type 526 Packed lever H4 Closed bonnet 526 Flanged Safety Relief Valves spring loaded Contents Chapter/Page Materials 1/2 1/4 How to order Numbering system 1/6 Article numbers 1/8 Dimensions Metric Units 1/1 US Units 1/12 Weights Metric Units 1/14 US Units 1/15 Orifice [ D T] Selection charts / Article numbers, dimensions and weights 1/16 Pressure temperature ratings [Metric Units + US Units] 1/18 Flange drillings 1/72 Flange facings 1/73 Outlet with flange rating class 3 1/74 Spare parts 1/76 Available options 1/84 Approvals 1/85 Capacities Steam [Metric Units + US Units] 1/86 Air [Metric Units + US Units] 1/88 Water [Metric Units + US Units] 1/9 LWN 48.1-E 1/1

Type 526 4 19 18 69 16 Cap H2 Lock nut Adjusting screw Needle bearing Spring plate 54 Spring 12 Spindle 9 Bonnet 14 17 Split ring Spring plate 55 Stud 56 Nut Plug 64 8 Guide 6 Gasket 22 Lift stopper 57 Ball 66 Screw 61 Ball 73 Lock screw 7 Disc 6 Adjusting ring 1 Body 5 Nozzle 1/2 LWN 48.1-E

Item Materials Component Standard Service Type 5262 Trim: Standard Corrosive Service Type 5264 Trim: Standard Type 5267 Trim: Standard Type 5263 Trim: Standard Type 526 1 Body 1.619 1.448 1.7357 SA 216 WCB SA 315 CF8M SA 217 WC6 SA 352 LCB 5 Nozzle 1) 1.444 1.444 1.444 stellited 1.444 316 L 316L 316L stellited 316L 6 Adjusting ring 7 Disc 8 Guide 9 Bonnet 12 Spindle 14 Split ring 16 / 17 Spring plate 18 Adjusting screw with bushing 19 Lock nut 22 Lift stopper 4 Cap H2 54 Spring 55 Stud 56 Nut 57 Ball 6 Gasket 61 Ball 64 Plug 66 Screw 69 Needle bearing 73 Lock screw 1.448 1.448 1.444 1.448 CF8M CF8M 316L CF8M 1.4122 1.444 stellited 1.4122 1.4122 Hardened stainless steel 316L stellited Hardened stainless steel Hardened stainless steel 1.444 1.444 1.444 1.444 316 L 316L 316L 316L 1.619 1.444, 1.4571 1.7357 SA 216 WCB SA 479 316L, 316Ti SA 217 WC6 SA 352 LCB 1.421 1.421 1.421 1.421 42 42 42 42 1.414 1.444 1.414 1.414 Chrome steel 316L Chrome steel Chrome steel 1.718 1.444 1.718 1.718 Steel 316L Steel Steel 1.414 1.444 tenifer 1.414 1.414 Chrome steel 316L tenifer Chrome steel Chrome steel PTFE with 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas " " " " 1.718 1.444 1.718 1.718 Steel 316L Steel Steel 1.444 1.444 1.444 1.444 316L 316L 316L 316L 1.718 1.444 1.718 1.718 Steel 316L Steel Steel 1.8159 1.431 1.8159 1.8159 High temp. alloy steel Stainless steel High temp. alloy steel High temp. alloy steel 1.441 1.441 1.441 1.441 B8M B8M B8M B8M 1.441 1.441 1.441 1.441 8M 8M 8M 8M 1.441 1.441 1.441 1.441 316 316 316 316 Graphite / 1.441 Graphite / 1.441 Graphite / 1.441 Graphite / 1.441 Graphite / 316 Graphite / 316 Graphite / 316 Graphite / 316 1.3541 1.441 1.3541 1.3541 Hardened stainless steel 316 Hardened stainless steel Hardened stainless steel Steel 1.441 Steel Steel " B8M " " 1.441 1.441 1.441 1.441 B8M B8M B8M B8M 1.444 1.444 1.444 1.444 316L 316 L 316L 316L 1.444 1.444 1.444 1.444 8M 8M 8M 8M 1) Stellited sealing surfaces please refer to page 99/6 Please notice: Special materials: - Modifications reserved by LESER Body and trim available in various materials (Monel, Hastelloy...). - LESER can upgrade materials without notice For nozzle and disc machined from the bar a short lead time is possible. - Every part can be replaced by other material acc. to customer specification. LWN 48.1-E 1/3

Type 526 4 19 18 69 16 Cap H2 Lock nut Adjusting screw Needle bearing Spring plate 54 Spring 12 Spindle 9 Bonnet 14 17 Split ring Spring plate 55 Stud 56 Nut 8 Guide 6 Gasket 11 Bonnet spacer 15 Bellows 57 Ball 66 Screw 61 Ball 7 Disc 73 Lock screw 6 Adjusting ring 1 Body 5 Nozzle 1/4 LWN 48.1-E

Materials Item Component 1 Body Standard Service Type 5262 Trim: Standard Corrosive Service Type 5264 Trim: Standard Type 5267 Trim: Standard 1.619 1.448 1.7357 Type 5263 Trim: Standard SA 216 WCB SA 315 CF8M SA 217 WC6 SA 352 LCB 5 Nozzle 2) 1.444 1.444 1.444 stellited 1.444 316 L 316L 316L stellited 316L 6 Adjusting ring 7 Disc 8 Guide 9 Bonnet Valve size 6 R 1, 8T1 1.448 1.448 1.444 1.448 CF8M CF8M 316L CF8M 1.4122 1.444 stellited 1.4122 1.4122 Hardened stainless steel 316L stellited Hardened stainless steel Hardened stainless steel 1.444 1.444 1.444 1.444 316 L 316L 316L 316L 1.619 1.444, 1.4571 1.7357 SA 216 WCB SA 479 316L, 316Ti SA 217 WC6 SA 352 LCB 1.35 1.4571 1.35 1.35 Steel SA 479 316Ti Steel Steel 11 Bonnet spacer 1) 1.46 1.444 1.444 1.444 Carbon steel SA 479 316L SA 479 316L 316L 12 Spindle 14 Split ring 15 Bellows 16 / 17 Spring plate 18 Adjusting screw with bushing 19 Lock nut 22 Lift stopper 4 Cap H2 54 Spring 55 Stud 56 Nut 57 Ball 6 Gasket 61 Ball 66 Screw 69 Needle bearing 73 Lock screw 1.421 1.421 1.421 1.421 42 42 42 42 1.414 1.444 1.414 1.414 Chrome steel 316L Chrome steel Chrome steel 1.4571 1.4571 1.4571 1.4571 316 Ti 316 Ti 316 Ti 316 Ti 1.718 1.444 1.718 1.718 Steel 316L Steel Steel 1.414 1.444 tenifer 1.414 1.414 Chrome steel 316L tenifer Chrome steel Chrome steel PTFE with 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas " " " " 1.718 1.444 1.718 1.718 Steel 316L Steel Steel 1.444 1.444 1.444 1.444 316L 316L 316L 316L 1.718 1.444 1.718 1.718 Steel 316L Steel Steel 1.8159 1.431 1.8159 1.8159 High temp. alloy steel Stainless steel High temp. alloy steel High temp. alloy steel 1.441 1.441 1.779 1.441 B8M B8M B16 B8M 1.441 1.441 1.7258 1.441 8M 8M 7M 8M 1.441 1.441 1.441 1.441 316 316 316 316 Graphite / 1.441 Graphite / 1.441 Graphite / 1.441 Graphite / 1.441 Graphite / 316 Graphite / 316 Graphite / 316 Graphite / 316 1.3541 1.441 1.3541 1.3541 Hardened stainless steel 316 Hardened stainless steel Hardened stainless steel 1.441 1.441 1.441 1.441 B8M B8M B8M B8M 1.444 1.444 1.444 1.444 316L 316 L 316L 316L 1.444 1.444 1.444 1.444 8M 8M 8M 8M Type 526 1) Valve size 6 R 1 and 8 T 1 without bonnet spacer 2) Stellited sealing surfaces please refer to page 99/6 Please notice: Special materials: - Modifications reserved by LESER Body and trim available in various materials (Monel, Hastelloy...). - LESER can upgrade materials without notice For nozzle and disc machined from the bar a short lead time is possible. - Every part can be replaced by other material acc. to customer specification. LWN 48.1-E 1/5

How to order Numbering system Type 526 1 2 3 Article Number Set Pressure Connections 1 2 3 4 526 2. 1 2 Please state unit (in gauge)! Please do not exceed the pressure range defined in the spring charts. If different from API 526 Standard please refer to page 1/72. 1 Valve Type 526 2 Material code Code Body + bonnet material 2 WCB 1.619 3 LCB 4 CF8M 1.448 7 WC6 1.7357 3 Valve code Identifies valve size, body material, orifice and flange class. Refer to page 1/8 and 1/9. 4 Code Lifting lever 2 screwed cap H2 3 plain lever H3 4 packed lever H4 plain lever with 5 open bonnet H3 5262.12 Article No. 5 barg Set Pressure H45 Connections 1/6 LWN 48.1-E

4 5 6 Options Documentation Code and Medium Type 526 Type 526 Option code Please select requested documentation: 1 2 RJ groove inlet L58 O-ring-disc CR K J21 EPDM D J22 FKM L J23 FFKM C J2 Disc 1.444 / 316L stellited J25 Nozzle 1.444 / 316L stellited L62 Stainless steel bellows - open bonnet J68 - closed bonnet J78 - high temperature equipment J88 (Type 5267 only) Stainless steel spring X4 Adaptor for lift indicator H4 J39 Lift indicator J93 Test gag - cap H2 J7 - packed lever H4 J69 Free of oil and grease J85 Materials - NACE H1 Heating jacket - Couplings G 3 / 8 H29 G 3 / 4 H3 - Flanges DN 15 H31 DN 25 H32 1 / 2 " class 15 K31 1" class 15 K32 - Bonnet spacer H33 Bolted cap H1 K1 Bolted lifting device H6 K6 Inspections, tests: Option Code DIN EN 124-3.2: TÜV-Nord Certificate for test pressure M33 LESER Certificate for Global Application - Inspection certificate 3.1 acc. to DIN EN 124 - Declaration of conformity acc. to PED 97/23/EC Material test certificate: DIN EN 124-3.1 Part Body Bonnet Cap / lever cover Nozzle Disc Studs Nuts H3 Option code H1 L3 L31 L59 L23 N7 N8 1 2 3. 1 Code 1. ASME Section VIII 2. CE / VdTUEV 3. ASME Section VIII + CE / VdTUEV Medium.1 Gases.2 Liquids.3 Steam. Steam / Gases / Liquids (valid only for CE / VdTUEV) Option code applies only if not standard J22 H1 L3 3.1 Options Documentation Code and Medium LWN 48.1-E 1/7

Article numbers Overview Type 526 Article numbers Material WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB 1.619 1.448 1.7357 1.619 1.448 1.7357 1.619 1.448 1.7357 Flange class 15 x 15 3L x 15 3 x 15 Valve size 1 D 2 1 D 2 1 D 2 D E F 5262. 5264. 5263. Use 1 D 2 5262. 5264. 5267. 5263. 1 1 5 3 x 15 2 11 6 51 1 E 2 1 E 2 1 E 2 5262. 5264. 5263. Use 1 E 2 5262. 5264. 5267. 5263. 15 24 55 3 x 15 16 25 2 56 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 5262. 5264. 5263. 5262. 5264. 5263. 5262. 5264. 5267. 5263. 29 39 51 3 4 511 31 41 35 512 G 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 5262. 5264. 5263. 5262. 5264. 5263. 5262. 5264. 5267. 5263. 45 11 516 46 111 517 47 112 52 518 Flange class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H 3 1 1 / 2 H 3 2 H 3 H 5262. 5264. 5263. 5262. 5264. 5263. 5262. 5264. 5267. 5263. 142 152 523 143 153 524 144 154 148 525 J 2 J 3 2 J 3 3 J 4 5262. 5264. 5263. 5262. 5264. 5263. 5262. 5264. 5267. 5263. 162 196 529 163 197 53 164 198 168 531 K 3 K 4 3 K 4 3 K 4 5262. 5264. 5263. Use 3 K 4 5262. 5264. 5267. 5263. 22 211 535 3 x 15 23 212 27 536 Flange class 15 x 15 3L x 15 3 x 15 Valve size 3 L 4 3 L 4 4 L 6 L 5262. 5264. 5263. 5262. 5264. 5263. 5262. 5264. 5267. 5263. 232 242 54 233 243 541 234 244 238 542 M N P Q R T 4 M 6 4 M 6 4 M 6 5262. 5264. 5263. Use 4 M 6 5262. 5264. 5267. 5263. 58 587 546 3 x 15 581 588 584 547 4 N 6 4 N 6 4 N 6 5262. 5264. 5263. Use 4 N 6 5262. 5264. 5267. 5263. 59 597 55 3 x 15 591 598 594 551 4 P 6 4 P 6 4 P 6 5262. 5264. 5263. 5262. 5264. 5263. 5262. 5264. 5267. 5263. 645 653 554 646 654 555 647 655 65 556 6 Q 8 6 Q 8 6 Q 8 5262. 5264. 5263. Use 6 Q 8 5262. 5264. 5267. 5263. 657 662 559 3 x 15 658 663 66 56 6 R 8 6 R 8 6 R 1 5262. 5264. 5263. 5262. 5264. 5267. 5263. 5262. 5264. 5263. 665 671 562 666 672 669 563 667 673 564 8 T 1 8 T 1 8 T 1 5262. 5264. 5263. Use 8 T 1 5262. 5264. 5267. 5263. 675 678 566 3 x 15 676 679 677 567 1/8 LWN 48.1-E

Article numbers Overview Article numbers Material WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB 1.619 1.448 1.7357 1.619 1.448 1.7357 1.619 1.448 1.7357 1.619 1.448 1.7357 Flange class 6 x 15 9 x 3 15 x 3 25 x 3 Valve size 1 D 2 1 1 / 2 D 2 1 1 / 2 D 2 1 1 / 2 D 3 D E F G 5262. 5264. 5267. 5263. Use 1 1 / 2 D 2 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 3 12 7 52 15 x 3 4 13 8 53 5 14 9 54 1 E 2 1 1 / 2 E 2 1 1 / 2 E 2 1 1 / 2 E 3 5262. 5264. 5267. 5263. Use 1 1 / 2 E 2 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 17 26 21 57 15 x 3 18 27 22 58 19 28 23 59 1 1 / 2 F 2 1 1 / 2 F 3 1 1 / 2 F 3 1 1 / 2 F 3 5262. 5264. 5267. 5263. Use 1 1 / 2 F 3 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 32 42 36 513 15 x 3 33 43 37 514 34 44 38 515 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 48 113 53 519 49 114 54 52 5 115 55 521 51 116 56 522 Flange class 6 x 15 9 x 15 15 x 3 Valve size 2 H 3 2 H 3 2 H 3 H 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 145 155 149 526 146 156 15 527 147 157 151 528 Type 526 J 3 J 4 3 J 4 3 J 4 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 165 199 169 532 166 2 17 533 167 21 171 534 K 3 K 4 3 K 6 3 K 6 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 24 213 28 537 25 214 29 538 26 215 21 539 Flange class 6 x 15 9 x 15 15 x 15 Valve size 4 L 6 4 L 6 4 L 6 L 5262. 5264. 5267. 5263. 5262. 5264. 5267. 5263. 5262. 5267. 5263. 235 245 239 543 236 246 24 544 237 241 545 M N P Q 4 M 6 4 M 6 5262. 5264. 5267. 5263. 5262. 5267. 5263. 582 589 585 548 583 586 549 4 N 6 4 N 6 5262. 5264. 5267. 5263. 5262. 5267. 5263. 592 599 595 552 593 596 553 4 P 6 4 P 6 5262. 5264. 5267. 5263. 5262. 5267. 5263. 648 656 651 557 649 652 558 6 Q 8 5262. 5264. 5267. 5263. 659 664 661 561 R T 6 R 1 5262. 5264. 5267. 5263. 668 674 67 565 8 T 1 ) Please add code for the required cap or lifting device. Code for lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 LWN 48.1-E 1/9

Dimensions Type 526 Metric Units Safety valve dimensions [mm] a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. Support brackets [mm] A B C D E A B C D E A B C D E Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 D 2 1 D 2 1 D 2 D E F G d [mm] 14 15 114 3 44 465 Please see 1 D 2 15 114 3 44 465 A [mm 2 ] 154 13 Ø 14 132 16 3 x 15 13 Ø 14 132 16 1 E 2 1 E 2 1 E 2 d [mm] 14 15 114 3 44 465 Please see 1 E 2 15 114 3 44 465 A [mm 2 ] 154 13 Ø 14 132 16 3 x 15 13 Ø14 132 16 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 d [mm] 18 124 121 32 536 561 124 121 32 536 561 124 152 35 536 561 A [mm 2 ] 254 162 Ø 14 148 16 162 Ø 14 148 16 162 Ø 14 148 16 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 d [mm] 22,5 124 121 32 536 574 124 121 32 536 574 124 152 35 536 574 A [mm 2 ] 398 162 Ø 14 148 16 162 Ø 14 148 16 162 Ø 14 148 16 Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H 3 1 1 / 2 H 3 2 H 3 H J K d [mm] 28,3 13 124 38 542 58 13 124 38 542 58 13 124 43 666 692 A [mm 2 ] 629 162 Ø 14 155 16 162 Ø 14 155 16 184 11 Ø 14 177 16 2 J 3 2 J 3 2 J 3 d [mm] 36 137 124 49 673 722 137 124 49 673 722 184 181 49 786 824 A [mm 2 ] 118 184 11 Ø 14 184 16 184 11 Ø 14 184 16 238 14 Ø 18 234 25 3 K 4 3 K 4 3 K 4 WCB, LCB, d [mm] 43 156 162 49 758 796 Please see 3 K 4 156 162 49 758 796 CF8M (WC6) A [mm 2 ] 1452 238 14 Ø 18 26 25 3 x 15 238 14 Ø 18 26 25 Hmax. with bellows WC6 Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 3 L 4 3 L 4 4 L 6 L M N P Q R T d [mm] 53,5 156 165 49 758 796 156 165 49 758 796 179 181 49 853 886 A [mm 2 ] 2248 238 14 Ø 18 26 25 238 14 Ø 18 26 25 278 16 Ø 18 262 25 4 M 6 4 M 6 4 M 6 d [mm] 6,3 178 184 48 852 885 Please see 4 M 6 178 184 48 852 885 A [mm 2 ] 2856 278 16 Ø 18 26 25 3 x 15 278 16 Ø 18 26 25 4 N 6 4 N 6 4 N 6 d [mm] 66 197 21 48 871 94 Please see 4 N 6 197 21 48 871 94 A [mm 2 ] 3421 278 16 Ø 18 28 25 3 x 15 278 16 Ø 18 28 25 4 P 6 4 P 6 4 P 6 d [mm] 8 181 229 48 855 888 181 229 48 855 888 225 254 62 179 1138 A [mm 2 ] 527 278 16 Ø 18 262 25 278 16 Ø 18 262 25 37 21 Ø 18 36 25 6 Q 8 6 Q 8 6 Q 8 d [mm] 15,5 24 241 68 112 12 Please see 6 Q 8 24 241 68 112 12 A [mm 2 ] 8742 37 21 Ø 18 346 25 3 x 15 37 21 Ø 18 346 25 6 R 8 6 R 8 6 R 1 d [mm] 126,5 24 241 68 112 12 24 241 68 112 12 24 267 68 1426 1426 A [mm 2 ] 12568 37 21 Ø 18 346 25 37 21 Ø 18 346 25 47 15 Ø 18 46 25 8 T 1 8 T 1 8 T 1 d [mm] 161,5 276 279 62 1462 1462 Please see 8 T 1 276 279 62 1462 1462 A [mm 2 ] 2485 47 15 Ø 18 497 25 3 x 15 47 15 Ø 18 497 25 1/1 LWN 48.1-E

d = Actual orifice diameter A = Actual orifice area a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. A B C D E A B C D E A B C D E A B C D E 6 x 15 9 x 3 15 x 3 25 x 3 1 D 2 1 1 / 2 D 2 1 1 / 2 D 2 1 1 / 2 D 3 15 114 3 44 465 Please see 1 1 / 2 D 2 15 14 44 517 542 14 178 57 576 576 13 Ø 14 132 16 15 x 3 162 Ø 14 129 16 162 Ø 14 189 16 1 E 2 1 1 / 2 E 2 1 1 / 2 E 2 1 1 / 2 E 3 15 114 3 44 465 Please see 1 1 / 2 E 2 15 14 44 517 542 14 178 57 576 576 13 Ø 14 132 16 15 x 3 162 Ø 14 129 16 162 Ø 14 189 16 1 1 / 2 F 2 1 1 / 2 F 3 1 1 / 2 F 3 1 1 / 2 F 3 124 152 35 536 561 Please see 1 1 / 2 F 3 124 165 44 56 56 14 178 57 576 576 162 Ø 14 148 16 15 x 3 162 Ø 14 174 16 162 Ø 14 189 16 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3 124 152 35 536 574 124 165 44 56 573 156 172 68 688 75 156 172 68 688 75 162 Ø 14 148 16 162 Ø 14 174 16 184 11 Ø 14 198 16 184 11 Ø 14 198 16 6 x 15 9 x 15 15 x 3 2 H 3 2 H 3 2 H 3 154 162 56 691 717 154 162 56 691 717 154 162 56 691 717 184 11 Ø 14 22 16 184 11 Ø 14 22 16 184 11 Ø 14 22 16 3 J 4 3 J 4 3 J 4 184 181 49 786 824 184 181 65 786 824 184 181 65 786 824 238 14 Ø 18 234 25 238 14 Ø 18 234 25 238 14 Ø 18 234 25 3 K 4 3 K 6 3 K 6 184 181 49 786 824 198 216 67 88 88 197 216 65 879 879 238 14 Ø 18 234 25 278 16 Ø 18 288 25 278 16 Ø 18 287 25 156 162 49 758 796 238 14 Ø 18 26 25 6 x 15 9 x 15 15 x 15 4 L 6 4 L 6 4 L 6 179 23 57 853 886 197 222 72 871 94 197 222 72 871 94 278 16 Ø 18 262 25 278 16 Ø 18 28 25 278 16 Ø 18 28 25 4 M 6 4 M 6 178 23 56 852 885 197 222 72 871 94 278 16 Ø 18 26 25 278 16 Ø 18 28 25 4 N 6 4 N 6 197 222 72 871 94 197 222 72 871 94 278 16 Ø 18 28 25 278 16 Ø 18 28 25 4 P 6 4 P 6 225 254 62 179 1138 225 254 62 179 1138 37 21 Ø 18 36 25 37 21 Ø 18 36 25 6 Q 8 24 241 68 112 12 37 21 Ø 18 346 25 6 R 1 24 267 68 1426 1426 47 15 Ø 18 46 25 Support brackets Hmax. with bellows Type 526 LWN 48.1-E 1/11

Dimensions Type 526 US Units Safety valve dimensions [inch] a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. Support brackets [inch] A B C D E A B C D E A B C D E Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 D 2 1 D 2 1 D 2 D E F G Hmax. with bellows d [inch],552 4 1 / 8 4 1 / 2 1 3 / 16 17 5 / 16 18 5 / 16 Please see 1 D 2 4 1 / 8 4 1 / 2 1 3 / 16 17 5 / 16 18 5 / 16 A [inch 2 ],239 5 1 / 8 Ø 9 / 16 5 7 / 32 5 / 8 3 x 15 5 1 / 8 Ø 9 / 16 5 7 / 32 5 / 8 1 E 2 1 E 2 1 E 2 d [inch],552 4 1 / 8 4 1 / 2 1 3 / 16 17 5 / 16 18 5 / 16 Please see 1 E 2 4 1 / 8 4 1 / 2 1 3 / 16 17 5 / 16 18 5 / 16 A [inch 2 ],239 5 1 / 8 Ø 9 / 16 5 7 / 32 5 / 8 3 x 15 5 1 / 8 Ø 9 / 16 5 7 / 32 5 / 8 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 d [inch],79 4 7 / 8 4 3 / 4 1 1 / 4 21 3 / 32 22 3 / 32 4 7 / 8 4 3 / 4 1 1 / 4 21 3 / 32 22 3 / 32 4 7 / 8 6 1 13 / 32 21 3 / 32 22 3 / 32 A [inch 2 ],394 6 3 / 8 Ø 9 / 16 5 27 / 5 32 / 8 6 3 / 8 Ø 9 / 16 5 27 / 5 32 / 8 6 3 / 8 Ø 14 5 27 / 5 32 / 8 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 d [inch],886 4 7 / 8 4 3 / 4 1 1 / 4 21 3 / 32 22 19 / 32 4 7 / 8 4 3 / 4 1 1 / 4 21 3 / 32 22 19 / 32 4 7 / 8 6 1 13 / 32 21 3 / 32 22 19 / 32 A [inch 2 ],616 6 3 / 8 Ø 9 / 16 5 27 / 32 5 / 8 6 3 / 8 Ø 9 / 16 5 27 / 32 5 / 8 6 3 / 8 Ø 9 / 16 5 27 / 32 5 / 8 Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H 3 1 1 / 2 H 3 2 H 3 H J K d [inch] 1,11 5 1 / 8 4 7 / 8 1 1 / 2 21 11 / 32 22 27 / 32 5 1 / 8 4 7 / 8 1 1 / 2 21 11 / 32 22 27 / 32 5 1 / 8 4 7 / 8 1 11 / 16 26 7 / 32 27 1 / 4 A [inch 2 ],98 6 3 / 8 Ø 9 / 16 6 3 / 32 5 / 8 6 3 / 8 Ø 9 / 16 6 3 / 32 5 / 8 7 1 / 4 4 11 / 32 Ø 9 / 16 6 31 / 32 5 / 8 2 J 3 2 J 3 2 J 3 d [inch] 1,42 5 3 / 8 4 7 / 8 1 15 / 16 26 1 / 2 28 7 / 16 5 3 / 8 4 7 / 8 1 15 / 16 26 1 / 2 28 7 / 16 7 1 / 4 7 1 / 8 1 15 / 16 3 15 / 16 32 7 / 16 A [inch 2 ] 1,58 7 1 / 4 4 11 / 32 Ø 9 / 16 7 1 / 4 5 / 8 7 1 / 4 4 11 / 32 Ø 9 / 16 7 1 / 4 5 / 8 9 3 / 8 5 1 / 2 Ø 23 / 32 9 7 / 32 31 / 32 3 K 4 3 K 4 3 K 4 WCB, LCB, d [inch] 1,69 6 1 / 8 6 3 / 8 1 15 / 16 29 27 / 32 23 11 / 32 Please see 3 K 4 6 1 / 8 6 3 / 8 1 15 / 16 29 27 / 32 31 11 / 32 CF8M (WC6) A [inch 2 ] 2,25 9 3 / 8 5 1 / 2 Ø 23 / 32 8 3 / 31 32 / 32 3 x 15 9 3 / 8 5 1 / 2 Ø 23 / 32 8 3 / 31 32 / 32 WC6 Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 3 L 4 3 L 4 4 L 6 L M N P Q R T d [inch] 2,11 6 1 / 8 6 1 / 2 1 15 / 16 23 27 / 32 31 11 / 12 6 1 / 8 6 1 / 2 1 15 / 16 29 27 / 32 31 11 / 12 7 1 / 6 7 1 / 8 1 15 / 16 33 19 / 32 34 7 / 8 A [inch 2 ] 3,48 9 3 / 8 5 1 / 2 Ø 23 / 32 8 3 / 32 31 / 32 9 3 / 8 5 1 / 2 Ø 23 / 32 8 3 / 32 31 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 1 5 / 16 31 / 32 4 M 6 4 M 6 4 M 6 d [inch] 2,37 7 7 1 / 4 1 7 / 8 33 17 / 32 34 27 / 32 Please see 4 M 6 7 7 1 / 4 1 7 / 8 33 17 / 32 34 27 / 32 A [inch 2 ] 4,43 1 15 / 16 6 5 / 16 Ø 23 / 32 1 1 / 4 31 / 32 3 x 15 1 15 / 16 6 5 / 16 Ø 23 / 32 1 1 / 4 31 / 32 4 N 6 4 N 6 4 N 6 d [inch] 2,6 7 3 / 4 8 1 / 4 1 7 / 8 34 9 / 32 35 19 / 32 Please see 4 N 6 7 3 / 4 8 1 / 4 1 7 / 8 34 9 / 32 35 19 / 32 A [inch 2 ] 5,3 1 15 / 16 6 5 / 16 Ø 23 / 32 11 31 / 32 3 x 15 1 15 / 16 6 5 / 16 Ø 23 / 32 11 31 / 32 4 P 6 4 P 6 4 P 6 d [inch] 3,15 7 1 / 8 9 1 7 / 8 33 31 / 32 34 31 / 32 7 1 / 8 9 1 7 / 8 33 31 / 32 34 31 / 32 8 7 / 8 1 2 7 / 16 42 1 / 2 44 13 / 16 A [inch 2 ] 7,79 1 15 / 16 6 5 / 16 Ø 23 / 32 1 5 / 16 31 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 1 5 / 16 31 / 32 14 9 / 16 8 9 / 32 Ø 23 / 32 12 1 / 16 31 / 32 6 Q 8 6 Q 8 6 Q 8 d [inch] 4,15 9 7 / 16 9 1 / 2 2 11 / 16 44 1 / 8 47 1 / 4 Please see 6 Q 8 9 7 / 16 9 1 / 2 2 11 / 16 44 1 / 8 47 1 / 4 A [inch 2 ] 13,55 14 9 / 16 8 9 / 32 Ø 23 / 32 13 5 / 8 31 / 32 3 x 15 14 9 / 16 8 9 / 32 Ø 23 / 32 13 5 / 8 31 / 32 6 R 8 6 R 8 6 R 1 d [inch] 4,98 9 7 / 16 9 1 / 2 2 11 / 16 44 1 / 8 47 1 / 4 9 7 / 16 9 1 / 2 2 11 / 16 41 5 / 8 44 3 / 4 9 7 / 16 1 1 / 2 2 11 / 16 56 1 / 8 56 1 / 8 A [inch 2 ] 19,84 14 9 / 16 8 9 / 32 Ø 23 / 32 13 5 / 8 31 / 32 14 9 / 16 8 9 / 32 Ø 23 / 32 13 5 / 8 31 / 32 18 1 / 2 5 29 / 32 Ø 23 / 32 18 1 / 8 31 / 32 8 T 1 8 T 1 8 T 1 d [inch] 6,36 1 7 / 8 11 2 7 / 16 57 9 / 16 57 9 / 16 Please see 8 T 1 1 7 / 8 11 2 7 / 16 57 9 / 16 57 9 / 16 A [inch 2 ] 31,75 18 1 / 2 5 29 / 32 Ø 23 / 32 19 9 / 16 31 / 32 3 x 15 18 1 / 2 5 29 / 32 Ø 23 / 32 19 9 / 16 31 / 32 1/12 LWN 48.1-E

d = Actual orifice diameter A = Actual orifice area a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. A B C D E A B C D E A B C D E A B C D E 6 x 15 9 x 3 15 x 3 25 x 3 1 D 2 1 1 / 2 D 2 1 1 / 2 D 2 1 1 / 2 D 3 Hmax. with bellows 4 1 / 8 4 1 / 2 1 3 / 16 17 5 / 16 18 5 / 16 Please see 1 1 / 2 D 2 4 1 / 8 5 1 / 2 1 3 / 4 2 11 / 32 21 11 / 32 4 1 / 2 7 2 1 / 4 22 11 / 16 22 11 / 16 5 1 / 8 Ø 9 / 16 5 7 / 32 5 / 8 15 x 3 6 3 / 8 Ø 9 / 16 5 3 / 32 5 / 8 6 3 / 8 Ø 9 / 16 7 15 / 32 5 / 8 1 E 2 1 1 / 2 E 2 1 1 / 2 E 2 1 1 / 2 E 3 4 1 / 8 4 1 / 2 1 3 / 16 17 5 / 16 18 5 / 16 Please see 1 1 / 2 E 2 4 1 / 8 5 1 / 2 1 3 / 4 2 11 / 32 21 11 / 32 5 1 / 2 7 2 1 / 4 22 11 / 16 22 11 / 16 5 1 / 8 Ø 9 / 16 5 7 / 32 5 / 8 15 x 3 6 3 / 8 Ø 9 / 16 5 3 / 32 5 / 8 6 3 / 8 Ø 9 / 16 7 15 / 32 5 / 8 1 1 / 2 F 2 1 1 / 2 F 3 1 1 / 2 F 3 1 1 / 2 F 3 4 7 / 8 6 1 13 / 32 21 3 / 32 22 3 / 32 Please see 1 1 / 2 F 3 4 7 / 8 6 1 / 2 1 3 / 4 22 1 / 16 22 1 / 16 5 1 / 2 7 2 1 / 4 22 11 / 16 22 11 / 16 6 3 / 8 Ø 9 / 16 5 27 / 32 5 / 8 15 x 3 6 3 / 8 Ø 9 / 16 6 27 / 32 5 / 8 6 3 / 8 Ø 9 / 16 7 15 / 32 5 / 8 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3 Type 526 4 7 / 8 6 1 13 / 32 21 3 / 32 22 19 / 32 4 7 / 8 6 1 / 2 1 3 / 4 22 1 / 16 22 9 / 16 6 1 / 8 6 3 / 4 2 11 / 16 27 3 / 32 27 3 / 4 6 1 / 8 6 3 / 4 2 11 / 16 27 3 / 32 27 3 / 4 6 3 / 8 Ø 9 / 16 5 27 / 32 5 / 8 6 3 / 8 Ø 14 6 27 / 32 5 / 8 7 1 / 4 4 11 / 32 Ø 9 / 16 7 13 / 16 5 / 8 7 1 / 4 4 11 / 32 Ø 9 / 16 7 13 / 16 5 / 8 6 x 15 9 x 15 15 x 3 2 H 3 2 H 3 2 H 3 6 1 / 16 6 3 / 8 2 3 / 16 27 7 / 32 28 7 / 32 6 1 / 16 6 3 / 8 2 3 / 16 27 7 / 32 28 7 / 32 6 1 / 16 6 3 / 8 2 3 / 16 27 7 / 32 28 7 / 32 7 1 / 4 4 11 / 32 Ø 9 / 16 7 15 / 16 5 / 8 7 1 / 4 4 11 / 32 Ø 9 / 16 7 15 / 16 5 / 8 7 1 / 4 4 11 / 32 Ø 9 / 16 7 15 / 16 5 / 8 3 J 4 3 J 4 3 J 4 7 1 / 4 7 1 / 8 1 15 / 16 3 15 / 16 32 7 / 16 7 1 / 4 7 1 / 8 2 9 / 16 3 15 / 16 32 7 / 16 7 1 / 4 7 1 / 8 2 3 / 16 3 15 / 16 32 7 / 16 9 3 / 8 5 1 / 2 Ø 23 / 32 9 7 / 32 31 / 32 9 3 / 8 5 1 / 2 Ø 23 / 32 9 7 / 32 31 / 32 9 3 / 8 5 1 / 2 Ø 23 / 32 9 7 / 32 31 / 32 3 K 4 3 K 6 3 K 6 7 1 / 4 7 1 / 8 1 15 / 16 3 15 / 16 32 7 / 16 7 13 / 16 8 1 / 2 2 9 / 16 34 21 / 32 34 21 / 32 7 3 / 4 8 1 / 2 2 9 / 16 34 19 / 32 34 19 / 32 9 3 / 8 5 1 / 2 Ø 23 / 32 9 7 / 32 31 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 11 11 / 32 31 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 1 15 / 16 31 / 32 6 1 / 8 6 3 / 8 1 15 / 16 29 27 / 32 31 11 / 32 9 3 / 8 5 1 / 2 Ø 23 / 32 8 3 / 32 31 / 32 6 x 15 9 x 15 15 x 15 4 L 6 4 L 6 4 L 6 7 1 / 16 8 2 1 / 4 33 19 / 32 34 7 / 8 7 3 / 4 8 3 / 4 2 3 / 4 34 9 / 32 35 19 / 32 7 3 / 4 8 3 / 4 2 / 34 34 9 / 32 35 19 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 1 15 / 16 31 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 11 31 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 11 31 / 32 4 M 6 4 M 6 7 8 2 3 / 16 33 17 / 32 34 27 / 32 7 3 / 4 8 3 / 4 2 3 / 4 34 9 / 32 35 19 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 1 1 / 4 31 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 11 31 / 32 4 N 6 4 N 6 7 3 / 4 8 3 / 4 2 3 / 4 34 9 / 32 35 19 / 32 7 3 / 4 8 3 / 4 2 3 / 4 34 9 / 32 35 19 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 11 31 / 32 1 15 / 16 6 5 / 16 Ø 23 / 32 11 31 / 32 4 P 6 4 P 6 8 7 / 8 1 2 7 / 16 42 1 / 2 44 13 / 16 8 7 / 8 1 2 7 / 16 42 1 / 2 44 13 / 16 14 9 / 16 8 9 / 32 Ø 23 / 32 12 1 / 16 31 / 32 14 9 / 16 8 9 / 32 Ø 23 / 32 12 1 / 16 31 / 32 6 Q 8 9 7 / 16 9 1 / 2 2 11 / 16 44 1 / 8 47 1 / 4 14 9 / 16 8 9 / 32 Ø 23 / 32 13 5 / 8 31 / 32 6 R 1 9 7 / 16 1 1 / 2 2 11 / 16 56 1 / 8 56 1 / 8 18 1 / 2 5 29 / 32 Ø 23 / 32 18 1 / 8 31 / 32 Support brackets LWN 48.1-E 1/13

Weights Type 526 Metric Units Bonnet all Lifting device all Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Valve size 1 D 2 1 D 2 1 D 2 1 D 2 1 1 / 2 D 2 1 1 / 2 D 2 1 1 / 2 D 3 D E F G Weight [kg] 17,3 Use 3 lbs 17,3 17,3 Use 15 lbs 31,1 41,8 dimensions for dimensions for with bellows [kg] 18,4 this size 18,4 18,4 this size 33,1 44,6 1 E 2 1 E 2 1 E 2 1 E 2 1 1 / 2 E 2 1 1 / 2 E 2 1 1 / 2 E 3 Weight [kg] 17,3 Use 3 lbs 17,3 17,3 Use 15 lbs 31,1 41,8 dimensions for dimensions for with bellows [kg] 18,4 this size 18,4 18,4 this size 33,1 44,6 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 3 1 1 / 2 F 3 1 1 / 2 F 3 Weight [kg] 3,6 3,6 32,5 32,5 Use 15 lbs 36,3 41,8 dimensions for with bellows [kg] 33,1 33,1 35 35 this size 38,6 44,6 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3 Weight [kg] 3,6 3,6 32,5 32,5 36,3 69,9 69,9 with bellows [kg] 33,1 33,1 35 35 38,6 72,5 72,5 Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Valve size 1 1 / 2 H 3 1 1 / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 H J K Weight [kg] 3,6 3,6 44,6 62,2 62,2 62,2 with bellows [kg] 33,1 33,1 48,4 65,3 65,3 65,3 2 J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Weight [kg] 44,6 44,6 77,7 77,7 1,2 1,2 with bellows [kg] 48,4 48,4 83,2 83,2 15,7 15,7 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Other WC6 Use 3 lbs Weight [kg] 7,1 dimensions for 7,1 77,7 7,1 127,5 127,5 with bellows [kg] 75,7 this size 75,7 83,2 75,7 134,1 134,1 Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 L M N P Q R T Weight [kg] 7,1 7,1 112,2 122 134,1 127,5 with bellows [kg] 75,7 75,7 118,8 128,6 14,7 134,1 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6 Weight [kg] 112,1 Use 3 lbs 112,1 122 134,1 dimensions for with bellows [kg] 118,7 this size 118,7 128,6 14,7 4 N 6 4 N 6 4 N 6 4 N 6 4 N 6 Weight [kg] 128,6 Use 3 lbs 128,6 134,1 134,1 dimensions for with bellows [kg] 135,2 this size 135,2 14,7 14,7 4 P 6 4 P 6 4 P 6 4 P 6 4 P 6 Weight [kg] 17,7 17,7 164 164 164 with bellows [kg] 114,8 114,8 172 172 172 6 Q 8 6 Q 8 6 Q 8 6 Q 8 Weight [kg] 221 Use 3 lbs 221 221 dimensions for with bellows [kg] 23 this size 23 23 6 R 8 6 R 8 6 R 1 6 R 1 Weight [kg] 221 221 277 277 with bellows [kg] 23 23 288 288 8 T 1 8 T 1 8 T 1 Weight [kg] 287 Use 3 lbs 287 dimensions for with bellows [kg] 298 this size 298 1/14 LWN 48.1-E

Weights US Units Bonnet all Lifting device all Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Valve size 1 D 2 1 D 2 1 D 2 1 D 2 1 1 / 2 D 2 1 1 / 2 D 2 1 1 / 2 D 3 D E F G Weight [lbs] 38,1 Use 3 lbs 38,1 38,1 Use 15 lbs 68,6 92,2 dimensions for dimensions for with bellows [lbs] 4,6 this size 4,6 4,6 this size 73 98,3 1 E 2 1 E 2 1 E 2 1 E 2 1 1 / 2 E 2 1 1 / 2 E 2 1 1 / 2 E 3 Weight [lbs] 38,1 Use 3 lbs 38,1 38,1 Use 15 lbs 68,6 92,2 dimensions for dimensions for with bellows [lbs] 4,6 this size 4,6 4,6 this size 73 98,3 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 3 1 1 / 2 F 3 1 1 / 2 F 3 Weight [lbs] 67,5 67,5 71,7 71,7 Use 15 lbs 8 92,2 dimensions for with bellows [lbs] 73 73 77,2 77,2 this size 85,1 98,3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3 Weight [lbs] 67,5 67,5 71,7 71,7 8 154,1 154,1 with bellows [lbs] 73 73 77,2 77,2 85 159,9 159,9 Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Valve size 1 1 / 2 H 3 1 1 / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 H J K Weight [lbs] 67,5 67,5 98,3 137,2 137,2 137,2 with bellows [lbs] 73 73 16,7 144 144 144 2 J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Weight [lbs] 98,3 98,3 171,3 171,3 22,9 22,9 with bellows [lbs] 16,7 16,7 183,5 183,5 233,1 233,1 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Other WC6 Use 3 lbs Weight [lbs] 154,6 dimensions for 154,6 171,3 154,6 281,1 281,1 with bellows [lbs] 166,9 this size 166,9 183,5 166,9 295,7 295,7 Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 L M N P Q R T Weight [lbs] 154,6 154,6 247,4 269 295,7 281,1 with bellows [lbs] 166,9 166,9 262 283,6 31,2 295,7 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6 Weight [lbs] 247,2 Use 3 lbs 247,2 269 295,7 dimensions for with bellows [lbs] 261,7 this size 261,7 283,6 31,2 4 N 6 4 N 6 4 N 6 4 N 6 4 N 6 Weight [lbs] 283,6 Use 3 lbs 283,6 295,7 295,7 dimensions for with bellows [lbs] 298,1 this size 298,1 31,2 31,2 4 P 6 4 P 6 4 P 6 4 P 6 4 P 6 Weight [lbs] 237,5 237,5 361,6 361,6 361,6 with bellows [lbs] 253,1 253,1 379,2 379,2 379,2 6 Q 8 6 Q 8 6 Q 8 6 Q 8 Weight [lbs] 487,3 Use 3 lbs 487,3 487,3 dimensions for with bellows [lbs] 57,2 this size 57,2 57,2 6 R 8 6 R 8 6 R 1 6 R 1 Weight [lbs] 487,3 487,3 61,8 61,8 with bellows [lbs] 57,2 57,2 635 635 8 T 1 8 T 1 8 T 1 Weight [lbs] 632,8 Use 3 lbs 632,8 dimensions for with bellows [lbs] 657,1 this size 657,1 Type 526 LWN 48.1-E 1/15

Orifice D Selection chart WCB WC6 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 5262.1X 5262.2X 5262.3X 5262.4X 5262.5X 5267.6X 5267.7X 5267.8X 5267.9X 1 p [bar] 25 5 75 1 15 2 25 3 35 4 D WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 5 1 15 2 3 4 5 6 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 5264.1X 5264.11X 5264.12X 5264.13X 5264.14X 1 25 5 75 p [bar] 1 15 2 25 3 35 4 9 4 8 7 6 3 5 4 2 CF8M T [ F] 3 2 1 1 T [ C] -1-2 -1-3 -4-2 5 1 15 2 3 4 5 6 p [psig] 1/16 LWN 48.1-E

Orifice D Article numbers, dimensions and weights Article numbers Valve size 1 D 2 1 D 2 1 D 2 1 D 2 1 1 / 2 D 2 1 1 / 2 D 2 1 1 / 2 D 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] 14 14 14 14 14 14 14 Actual Orifice area A [mm 2 ] 154 154 154 154 154 154 154 Body material WCB 1.619 Art.-No. 5262.1 5262.2 5262.3 5262.4 5262.5 CF8M 1.448 Art.-No. 5264.1 Use 1 D 2 5264.11 5264.12 Use 1 1 / 2 D 2 5264.13 5264.14 WC6 1.7357 Art.-No. 3 x 15 5267.6 5267.7 15 x 3 5267.8 5267.9 LCB Art.-No. 5263.5 5263.51 5263.52 5263.53 5263.54 D ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 17,3 17,3 17,3 31,1 41,8 [kg] with bellows 18,4 18,4 18,4 33,1 44,6 Center to face Inlet a 15 15 15 15 14 [mm] Outlet b 114 114 114 14 178 s 3 Use 1 D 2 3 3 Use 1 1 / 2 D 2 44 57 Height (H4) Standard H max. 44 3 x 15 44 44 15 x 3 517 576 [mm] Bellows H max. 465 465 465 542 576 Support brackets A 13 13 13 162 162 [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D 132 132 132 129 189 E 16 16 16 16 16 US Units Weight 38,1 38,1 38,1 68,6 92,2 [lbs] with bellows 4,5 4,5 4,5 73 98,4 Center to face Inlet a 4 1 / 8 4 1 / 8 4 1 / 8 4 1 / 8 5 1 / 2 [inch] Outlet b 4 1 / 2 4 1 / 2 4 1 / 2 5 1 / 2 7 s 1 3 / 16 Use 1 D 2 1 3 / 16 1 3 / 16 Use 1 1 / 2 D 2 1 3 / 4 2 1 / 4 Height (H4) Standard H max. 17 5 / 16 3 x 15 17 5 / 16 17 5 / 16 15 x 3 2 11 / 32 22 11 / 16 [inch] Bellows H max. 18 5 / 16 18 5 / 16 18 5 / 16 21 11 / 32 22 11 / 16 Support brackets A 5 1 / 8 5 1 / 8 5 1 / 8 6 3 / 8 6 3 / 8 [inch] B C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 7 / 32 5 7 / 32 5 7 / 32 5 7 / 32 7 15 / 32 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/17

Orifice D Pressure temperature ratings Metric Units D Valve size 1 D 2 1 D 2 1 D 2 1 D 2 1 1 / 2 D 2 1 1 / 2 D 2 1 1 / 2 D 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] 14 14 14 14 14 14 14 Actual Orifice area A [mm 2 ] 154 154 154 154 154 154 154 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 51, 12,1 255,5 413,8 39 to 232 C 12,8 42,4 85,2 212,4 354,1 233 to 427 C 5,5 Use 1 D 2 28,3 56,9 Use 1 1 / 142,1 236,6 2 D 2 3 x 15 15 x 3 19,7 19,7 19,7 41,4 51, Body material: CF8M 1.448 15,9 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 49,7 99,3 248,3 275,9-59 to -29 C 19, 49,7 99,3 248,3 413,8 Body material: WC6 1.7357-28 to 38 C 19, 49,7 99,3 248,3 413,8 39 to 232 C 12,4 Use 1 D 2 34,1 68,3 Use 1 1 / 2 D 2 171, 284,8 233 to 427 C 5,5 3 x 15 29, 58,3 15 x 3 145,5 242,8 428 to 538 C 1,4 24,1 48,3 12,7 21, 19, 19, 19, 41,4 49,7 15,9 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 7, 175,2 291,7 428 to 538 C 14,8 29,7 74,5 124,1 Body material: LCB Use 1 1 / 2 D 2 19,7 19,7 15 x 3 41,4 51, 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 48, 96, 24,1 4,1 39 to 2 C 13,8 42,5 85,1 212,7 354,4 21 to 343 C 8,4 36,4 72,8 182, 33,3 Use 1 D 2 Use 1 1 / 2 D 2 3 x 15 15 x 3 19,7 19,7 19,7 41,4 51, 15,9 15,9 15,9 34,5 34,5 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/18 LWN 48.1-E

Orifice D Pressure temperature ratings US Units Valve size 1 D 2 1 D 2 1 D 2 1 D 2 1 1 / 2 D 2 1 1 / 2 D 2 1 1 / 2 D 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [inch],551,551,551,551,551,551,551 Actual Orifice area A [inch 2 ],239,239,239,239,239,239,239 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 74 148 375 6 11 to 45 F 185 615 1235 38 5135 451 to 8 F 8 Use 1 D 2 41 825 Use 1 1 / 26 343 2 D 2 3 x 15 15 x 3 285 285 285 6 74 Body material: CF8M 1.448 23 23 23 5 5 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 72 144 36 4-75 to -21 F 275 72 144 36 6-2 to 1 F 275 72 144 36 6 11 to 45 F 18 Use 1 D 2 495 99 Use 1 1 / 2 D 2 248 413 451 to 8 F 8 3 x 15 42 845 15 x 3 211 352 81 to 1 F 2 35 7 175 2915 275 275 275 6 72 23 23 23 5 5 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 115 254 423 81 to 1 F 215 43 18 18 Use 1 1 / 2 D 2 285 285 15 x 3 6 74 23 23 5 5 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 695 1395 348 585 11 to 4 F 2 615 123 375 5125 41 to 65 F 125 Use 1 D 2 535 165 Use 1 1 / 2 D 2 2665 444 3 x 15 15 x 3 285 285 285 6 74 23 23 23 5 5 D Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/19

Orifice E Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 WCB 5262.15X 5262.16X 5262.17X 5262.18X 5262.19X WC6 5267.2X 5267.21X 5267.22X 5267.23X 1 p [bar] 25 5 75 1 15 2 25 3 35 4 E WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 5 1 15 2 3 4 5 6 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 5264.24X 5264.25X 5264.26X 5264.27X 5264.28X 1 25 5 75 p [bar] 1 15 2 25 3 35 4 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 5 1 15 2 3 4 5 6 p [psig] 1/2 LWN 48.1-E

Orifice E Article numbers, dimensions and weights Article numbers Valve size 1 E 2 1 E 2 1 E 2 1 E 2 1 1 / 2 E 2 1 1 / 2 E 2 1 1 / 2 E 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] 14 14 14 14 14 14 14 Actual Orifice area A [mm 2 ] 154 154 154 154 154 154 154 Body material WCB 1.619 Art.-No. 5262.15 5262.16 5262.17 5262.18 5262.19 CF8M 1.448 Art.-No. 5264.24 Use 1 E 2 5264.25 5264.26 Use 1 1 / 2 E 2 5264.27 5264.28 WC6 1.7357 Art.-No. 3 x 15 5267.2 5267.21 15 x 3 5267.22 5267.23 LCB Art.-No. 5263.55 5263.56 5263.57 5263.58 5263.59 ) Please add code for the required cap or lifting device. See below. Dimensions and weights E Metric Units Weight 17,3 17,3 17,3 31,1 41,8 [kg] with bellows 18,4 18,4 18,4 33,1 44,6 Center to face Inlet a 15 15 15 15 14 [mm] Outlet b 114 114 114 14 178 s 3 Use 1 E 2 3 3 Use 1 1 / 2 E 2 44 57 Height (H4) Standard H max. 44 3 x 15 44 44 15 x 3 517 576 [mm] Bellows H max. 465 465 465 542 576 Support brackets A 13 13 13 162 162 [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D 132 132 132 129 189 E 16 16 16 16 16 US Units Weight 38,1 38,1 38,1 68,6 92,2 [lbs] with bellows 4,5 4,5 4,5 73 98,4 Center to face Inlet a 4 1 / 8 4 1 / 8 4 1 / 8 4 1 / 8 5 1 / 2 [inch] Outlet b 4 1 / 2 4 1 / 2 4 1 / 2 5 1 / 2 7 s 1 3 / 16 Use 1 E 2 1 3 / 16 1 3 / 16 Use 1 1 / 2 E 2 1 3 / 4 2 1 / 4 Height (H4) Standard H max. 17 5 / 16 3 x 15 17 5 / 16 17 5 / 16 15 x 3 2 11 / 32 22 11 / 16 [inch] Bellows H max. 18 5 / 16 18 5 / 16 18 5 / 16 21 11 / 32 22 11 / 16 Support brackets A 5 1 / 8 5 1 / 8 5 1 / 8 6 3 / 8 6 3 / 8 [inch] B C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 7 / 32 5 7 / 32 5 7 / 32 5 7 / 32 7 15 / 32 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/21

Orifice E Pressure temperature ratings Metric Units E Valve size 1 E 2 1 E 2 1 E 2 1 E 2 1 1 / 2 E 2 1 1 / 2 E 2 1 1 / 2 E 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] 14 14 14 14 14 14 14 Actual Orifice area A [mm 2 ] 154 154 154 154 154 154 154 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 51, 12,1 255,5 413,8 39 to 232 C 12,8 42,4 85,2 212,4 354,1 233 to 427 C 5,5 Use 1 E 2 28,3 56,9 Use 1 1 / 142,1 236,6 2 E 2 3 x 15 15 x 3 19,7 19,7 19,7 41,4 51, Body material: CF8M 1.448 15,9 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 49,7 99,3 248,3 275,9-59 to -29 C 19, 49,7 99,3 248,3 413,8 Body material: WC6 1.7357-28 to 38 C 19, 49,7 99,3 248,3 413,8 39 to 232 C 12,4 Use 1 E 2 34,1 67,2 Use 1 1 / 2 E 2 171, 284,8 233 to 427 C 5,5 3 x 15 29, 58,3 15 x 3 145,5 242,8 428 to 538 C 1,4 24,1 48,3 12,7 21, 19, 19, 19, 41,4 49,7 15,9 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 7, 175,2 291,7 428 to 538 C 14,8 29,7 74,5 124,1 Body material: LCB Use 1 1 / 2 E 2 19,7 19,7 15 x 3 41,4 51, 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 48, 96, 24,1 4,1 39 to 2 C 13,8 42,5 85,1 212,7 354,4 21 to 343 C 8,4 36,4 72,8 182, 33,3 Use 1 E 2 Use 1 1 / 2 E 2 3 x 15 15 x 3 19,7 19,7 19,7 41,4 51, 15,9 15,9 15,9 34,5 34,5 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/22 LWN 48.1-E

Orifice E Pressure temperature ratings US Units Valve size 1 E 2 1 E 2 1 E 2 1 E 2 1 1 / 2 E 2 1 1 / 2 E 2 1 1 / 2 E 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [inch],551,551,551,551,551,551,551 Actual Orifice area A [inch 2 ],239,239,239,239,239,239,239 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 74 148 375 6 11 to 45 F 185 615 1235 38 5135 451 to 8 F 8 Use 1 E 2 41 825 Use 1 1 / 26 343 2 E 2 3 x 15 15 x 3 285 285 285 6 74 Body material: CF8M 1.448 23 23 23 5 5 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 72 144 36 4-75 to -21 F 275 72 144 36 6-2 to 1 F 275 72 144 36 6 11 to 45 F 18 Use 1 E 2 495 975 Use 1 1 / 2 E 2 248 413 451 to 8 F 8 3 x 15 42 845 15 x 3 211 352 81 to 1 F 2 35 7 175 2915 275 275 275 6 72 23 23 23 5 5 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 115 254 423 81 to 1 F 215 43 18 18 Use 1 1 / 2 E 2 285 285 15 x 3 6 74 23 23 5 5 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 695 1395 348 585 11 to 4 F 2 615 123 375 5125 41 to 65 F 125 Use 1 E 2 535 165 Use 1 1 / 2 E 2 2665 444 3 x 15 15 x 3 285 285 285 6 74 23 23 23 5 5 E Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/23

Orifice F Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 WCB 5262.29X 5262.3X 5262.31X 5262.32X 5262.33X 5262.34X WC6 5267.35X 5267.36X 5267.37X 5267.38X 1 p [bar] 25 5 75 1 15 2 25 3 35 4 F WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 5 1 15 2 3 4 5 6 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 5264.39X 5264.4X 5264.41X 5264.42X 5264.43X 5264.44X 1 25 5 75 p [bar] 1 15 2 25 3 35 4 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 5 1 15 2 3 4 5 6 p [psig] 1/24 LWN 48.1-E

Orifice F Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 3 1 1 / 2 F 3 1 1 / 2 F 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] 18 18 18 18 18 18 18 Actual Orifice area A [mm 2 ] 254 254 254 254 254 254 254 Body material WCB 1.619 Art.-No. 5262.29 5262.3 5262.31 5262.32 5262.33 5262.34 CF8M 1.448 Art.-No. 5264.39 5264.4 5264.41 5264.42 Use 1 1 / 2 F 3 5264.43 5264.44 WC6 1.7357 Art.-No. 5267.35 5267.36 15 x 3 5267.37 5267.38 LCB Art.-No. 5263.51 5263.511 5263.512 5263.513 5263.514 5263.515 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 3,6 3,6 32,5 32,5 36,3 41,8 [kg] with bellows 33,1 33,1 35 35 38,6 44,6 Center to face Inlet a 124 124 124 124 124 14 [mm] Outlet b 121 121 152 152 165 178 s 32 32 35 35 Use 1 1 / 2 F 3 44 57 Height (H4) Standard H max. 536 536 536 536 15 x 3 56 576 [mm] Bellows H max. 561 561 561 561 56 576 Support brackets A 162 162 162 162 162 162 [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D 148 148 148 148 174 189 E 16 16 16 16 16 16 F US Units Weight 67,5 67,5 71,1 71,1 8 92,2 [lbs] with bellows 73 73 77,2 77,2 85,1 98,4 Center to face Inlet a 4 7 / 8 4 7 / 8 4 7 / 8 4 7 / 8 4 7 / 8 5 1 / 2 [inch] Outlet b 4 3 / 4 4 3 / 4 6 6 6 1 / 2 7 s 1 1 / 4 1 1 / 4 1 13 / 32 1 13 / 32 Use 1 1 / 2 F 3 1 3 / 4 2 1 / 4 Height (H4) Standard H max. 21 3 / 32 21 3 / 32 21 3 / 32 21 3 / 32 15 x 3 22 1 / 16 22 11 / 16 [inch] Bellows H max. 22 3 / 32 22 3 / 32 22 3 / 32 22 3 / 32 22 1 / 16 22 11 / 16 Support brackets A 6 3 / 8 6 3 / 8 6 3 / 8 6 3 / 8 6 3 / 8 6 3 / 8 [inch] B C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 27 / 32 5 27 / 32 5 27 / 32 5 27 / 32 6 27 / 32 6 27 / 32 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/25

Orifice F Pressure temperature ratings Metric Units F Valve size 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 3 1 1 / 2 F 3 1 1 / 2 F 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] 18 18 18 18 18 18 18 Actual Orifice area A [mm 2 ] 254 254 254 254 254 254 254 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 19,7 51, 12,1 255,5 344,8 39 to 232 C 12,8 19,7 42,4 85,2 212,4 344,8 233 to 427 C 5,5 19,7 28,3 56,9 Use 1 1 / 142,1 236,6 2 F 3 15 x 3 19,7 19,7 19,7 19,7 51, 51, Body material: CF8M 1.448 15,9 15,9 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 19, 49,7 99,3 151,7 234,5-59 to -29 C 19, 19, 49,7 99,3 248,3 344,8 Body material: WC6 1.7357-28 to 38 C 19, 19, 49,7 99,3 248,3 344,8 39 to 232 C 12,4 12,4 34,1 67,2 Use 1 1 / 2 F 3 171, 284,8 233 to 427 C 5,5 5,5 29, 58,3 15 x 3 145,5 242,8 428 to 538 C 1,4 1,4 24,1 48,3 12,7 21, 19, 19, 19, 19, 41,4 49,7 15,9 15,9 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 7, 175,2 291,7 428 to 538 C 14,8 29,7 74,5 124,1 Body material: LCB Use 1 1 / 2 F 3 19,7 19,7 15 x 3 51, 51, 15,9 15,9 34,5 34,5 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 18,4 48, 96, 24,1 4,1 39 to 2 C 13,8 13,8 42,5 85,1 212,7 354,4 21 to 343 C 8,4 8,4 36,4 72,8 182, 33,3 Use 1 1 / 2 F 3 15 x 3 19,7 19,7 19,7 19,7 51, 51, 15,9 15,9 15,9 15,9 34,5 34,5 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/26 LWN 48.1-E

Orifice F Pressure temperature ratings US Units Valve size 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 2 1 1 / 2 F 3 1 1 / 2 F 3 1 1 / 2 F 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [inch],79,79,79,79,79,79,79 Actual Orifice area A [inch 2 ],394,394,394,394,394,394,394 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 285 74 148 375 5 11 to 45 F 185 285 615 1235 38 5 451 to 8 F 8 285 41 825 Use 1 1 / 26 343 2 F 3 15 x 3 285 285 285 285 74 74 Body material: CF8M 1.448 23 23 23 23 5 5 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 275 72 144 22 34-75 to -21 F 275 275 72 144 36 5-2 to 1 F 275 275 72 144 36 5 11 to 45 F 18 18 495 975 Use 1 1 / 2 F 3 248 413 451 to 8 F 8 8 42 845 15 x 3 211 352 81 to 1 F 2 2 35 7 175 2915 275 275 275 275 6 72 23 23 23 23 5 5 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 115 254 423 81 to 1 F 215 43 18 18 Use 1 1 / 2 F 3 285 285 15 x 3 74 74 23 23 5 5 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 265 695 1395 348 585 11 to 4 F 2 2 615 123 375 5125 41 to 65 F 125 125 535 165 Use 1 1 / 2 F 3 2665 444 15 x 3 285 285 285 285 74 74 23 23 23 23 5 5 F Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/27

Orifice G Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 WCB 5262.45X 5262.46X 5262.47X 5262.48X 5262.49X 5262.5X 5262.51X WC6 5267.52X 5267.53X 5267.54X 5267.55X 5267.56X 1 p [bar] 25 5 75 1 15 2 25 G WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 5 1 15 2 3 4 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 5264.11X 5264.111X 5264.112X 5264.113X 5264.114X 5264.115X 5264.116X 1 p [bar] 25 5 75 1 15 2 25 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 5 1 15 2 3 4 p [psig] 1/28 LWN 48.1-E

Orifice G Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] 22,5 22,5 22,5 22,5 22,5 22,5 22,5 Actual Orifice area A [mm 2 ] 398 398 398 398 398 398 398 Body material WCB 1.619 Art.-No. 5262.45 5262.46 5262.47 5262.48 5262.49 5262.5 5262.51 CF8M 1.448 Art.-No. 5264.11 5264.111 5264.112 5264.113 5264.114 5264.115 5264.116 WC6 1.7357 Art.-No. 5267.52 5267.53 5267.54 5267.55 5267.56 LCB Art.-No. 5263.516 5263.517 5263.518 5263.519 5263.52 5263.521 5263.522 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 3,6 3,6 32,5 32,5 36,3 69,9 69,9 [kg] with bellows 33,1 33,1 35 35 38,6 72,5 72,5 Center to face Inlet a 124 124 124 124 124 156 156 [mm] Outlet b 121 121 152 152 165 172 172 s 32 32 35 35 44 68 68 Height (H4) Standard H max. 536 536 536 536 56 688 688 [mm] Bellows H max. 574 574 574 574 573 75 75 Support brackets A 162 162 162 162 162 184 184 [mm] B 11 11 C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D 148 148 148 148 174 198 198 E 16 16 16 16 16 16 16 G US Units Weight 67,5 67,5 71,7 71,7 8 154,1 154,1 [lbs] with bellows 73 73 77,2 77,2 85,1 159,9 159,9 Center to face Inlet a 4 7 / 8 4 7 / 8 4 7 / 8 4 7 / 8 4 7 / 8 6 1 / 8 6 1 / 8 [inch] Outlet b 4 3 / 4 4 3 / 4 6 6 6 1 / 2 6 3 / 4 6 3 / 4 s 1 1 / 4 1 1 / 4 1 13 / 32 1 13 / 32 1 3 / 4 2 11 / 16 2 11 / 16 Height (H4) Standard H max. 21 3 / 32 21 3 / 32 21 3 / 32 21 3 / 32 22 1 / 16 27 3 / 32 27 3 / 32 [inch] Bellows H max. 22 19 / 32 22 19 / 32 22 19 / 32 22 19 / 32 22 9 / 16 27 3 / 4 27 3 / 4 Support brackets A 6 3 / 8 6 3 / 8 6 3 / 8 6 3 / 8 6 3 / 8 7 1 / 4 7 1 / 4 [inch] B 4 11 / 32 4 11 / 32 C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 27 / 32 5 27 / 32 5 27 / 32 5 27 / 32 6 27 / 32 7 13 / 16 7 13 / 16 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/29

Orifice G Pressure temperature ratings Metric Units G Valve size 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] 22,5 22,5 22,5 22,5 22,5 22,5 22,5 Actual Orifice area A [mm 2 ] 398 398 398 398 398 398 398 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 19,7 51, 12,1 153,1 255,5 255,5 39 to 232 C 12,8 19,7 42,4 85,2 127,2 212,4 255,5 Body material: CF8M 1.448 233 to 427 C 5,5 19,7 28,3 56,9 85,2 142,1 236,6 19,7 19,7 19,7 19,7 51, 51, 51, 15,9 15,9 15,9 15,9 32,4 32,4 32,4 Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 19, 49,7 99,3 149, 169, 179,3-59 to -29 C 19, 19, 49,7 99,3 149, 248,3 248,3 Body material: WC6 1.7357-28 to 38 C 19, 19, 49,7 99,3 149, 248,3 248,3 39 to 232 C 12,4 12,4 34,1 67,2 12,4 171, 248,3 233 to 427 C 5,5 5,5 29, 58,3 87,2 145,5 242,8 428 to 538 C 1,4 1,4 24,1 48,3 72,4 12,7 21, 19, 19, 19, 19, 41,4 41,4 49,7 15,9 15,9 15,9 15,9 32,4 32,4 32,4 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 7, 15,2 175,2 255,5 428 to 538 C 14,8 29,7 44,8 74,5 124,1 Body material: LCB 19,7 19,7 51, 51, 51, 15,9 15,9 32,4 32,4 32,4 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 18,4 48, 96, 144,1 24,1 4,1 39 to 2 C 13,8 13,8 42,5 85,1 127,6 212,7 354,4 21 to 343 C 8,4 8,4 36,4 72,8 19,2 182, 33,3 19,7 19,7 19,7 19,7 51, 51, 51, 15,9 15,9 15,9 15,9 32,4 32,4 32,4 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/3 LWN 48.1-E

Orifice G Pressure temperature ratings US Units Valve size 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [inch],886,886,886,886,886,886,886 Actual Orifice area A [inch 2 ],616,616,616,616,616,616,616 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 285 74 148 222 375 375 11 to 45 F 185 285 615 1235 1845 38 375 Body material: CF8M 1.448 451 to 8 F 8 285 41 825 1235 26 343 285 285 285 285 74 74 74 23 23 23 23 47 47 47 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 275 72 144 216 245 26-75 to -21 F 275 275 72 144 216 36 36-2 to 1 F 275 275 72 144 216 36 36 11 to 45 F 18 18 495 975 1485 248 36 451 to 8 F 8 8 42 845 1265 211 352 81 to 1 F 2 2 35 7 15 175 2915 275 275 275 275 6 6 72 23 23 23 23 47 47 47 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 115 1525 254 375 81 to 1 F 215 43 65 18 18 285 285 74 74 74 23 23 47 47 47 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 265 695 1395 29 348 585 11 to 4 F 2 2 615 123 1845 375 5125 41 to 65 F 125 125 535 165 16 2665 444 285 285 285 285 74 74 74 23 23 23 23 47 47 47 G Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/31

Orifice H Selection chart WCB WC6 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 25 x 3 5262.142X 5262.143X 5262.144X 5262.145X 5262.146X 5262.147X 5267.148X 5267.149X 5267.15X 5267.151X 1 p [bar] 25 5 75 1 125 15 175 2 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] H 1 5 1 15 2 25 3 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 25 x 3 5264.152X 5264.153X 5264.154X 5264.155X 5264.156X 5264.157X 1 25 5 75 p [bar] 1 125 15 175 2 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 5 1 15 2 25 3 p [psig] 1/32 LWN 48.1-E

Orifice H Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 H 3 1 1 / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [mm] 28,3 28,3 28,3 28,3 28,3 28,3 Actual Orifice area A [mm 2 ] 629 629 629 629 629 629 Body material WCB 1.619 Art.-No. 5262.142 5262.143 5262.144 5262.145 5262.146 5262.147 CF8M 1.448 Art.-No. 5264.152 5264.153 5264.154 5264.155 5264.156 5264.157 WC6 1.7357 Art.-No. 5267.148 5267.149 5267.15 5267.151 LCB Art.-No. 5263.523 5263.524 5263.525 5263.526 5263.527 5263.528 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 3,6 3,6 44,6 62,2 62,2 62,2 [kg] with bellows 33,1 33,1 48,4 65,3 65,3 65,3 Center to face Inlet a 13 13 13 154 154 154 [mm] Outlet b 124 124 124 162 162 162 s 38 38 43 56 56 56 Height (H4) Standard H max. 542 542 666 691 691 691 [mm] Bellows H max. 58 58 692 717 717 717 Support brackets A 162 162 184 184 184 184 [mm] B 11 11 11 11 C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D 155 155 177 22 22 22 E 16 16 16 16 16 16 H US Units Weight 67,5 67,5 98,3 137,2 137,2 137,2 [lbs] with bellows 73 73 16,7 144 144 144 Center to face Inlet a 5 1 / 8 5 1 / 8 5 1 / 8 6 1 / 16 6 1 / 16 6 1 / 16 [inch] Outlet b 4 7 / 8 4 7 / 8 4 7 / 8 6 3 / 8 6 3 / 8 6 3 / 8 s 1 1 / 2 1 1 / 2 1 1 / 16 2 3 / 16 2 3 / 16 2 3 / 16 Height (H4) Standard H max. 21 11 / 32 21 11 / 32 26 7 / 32 27 7 / 32 27 7 / 32 27 7 / 32 [inch] Bellows H max. 22 27 / 32 22 27 / 32 27 1 / 4 28 7 / 32 28 7 / 32 28 7 / 32 Support brackets A 6 3 / 8 6 3 / 8 7 1 / 4 7 1 / 4 7 1 / 4 7 1 / 4 [inch] B 4 11 / 32 4 11 / 32 4 11 / 32 4 11 / 32 C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 6 3 / 32 6 3 / 32 6 31 / 32 7 15 / 16 7 15 / 16 7 15 / 16 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/33

Orifice H Pressure temperature ratings Metric Units H Valve size 1 1 / 2 H 3 1 1 / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [mm] 28,3 28,3 28,3 28,3 28,3 28,3 Actual Orifice area A [mm 2 ] 625 625 625 625 625 625 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 19,7 51, 12,1 153,1 189,7 39 to 232 C 12,8 19,7 42,4 85,2 127,2 189,7 Body material: CF8M 1.448 233 to 427 C 5,5 19,7 28,3 56,9 85,2 142,1 19,7 19,7 19,7 19,7 19,7 51, 15,9 15,9 15,9 15,9 15,9 28,6 Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 19, 49,7 99,3 12,4 11,3-59 to -29 C 19, 19, 49,7 99,3 149, 189,7 Body material: WC6 1.7357-28 to 38 C 19, 19, 49,7 99,3 149, 189,7 39 to 232 C 12,4 12,4 34,1 67,2 12,4 171, 233 to 427 C 5,5 5,5 29, 58,3 87,2 145,5 428 to 538 C 1,4 1,4 24,1 48,3 72,4 12,7 19, 19, 19, 19, 41,4 41,4 15,9 15,9 15,9 15,9 15,9 28,6 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 7, 15,2 175,2 428 to 538 C 14,8 29,7 44,8 74,5 Body material: LCB 19,7 19,7 19,7 51, 15,9 15,9 15,9 28,6 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 18,4 48, 96, 144,1 24,1 39 to 2 C 13,8 13,8 42,5 85,1 127,6 212,7 21 to 343 C 8,4 8,4 36,4 72,8 19,2 182, 19,7 19,7 19,7 19,7 19,7 51, 15,9 15,9 15,9 15,9 15,9 28,6 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/34 LWN 48.1-E

Orifice H Pressure temperature ratings US Units Valve size 1 1 / 2 H 3 1 1 / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [inch] 1,11 1,11 1,11 1,11 1,11 1,11 Actual Orifice area A [inch 2 ],975,975,975,975,975,975 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 285 74 148 222 275 11 to 45 F 185 285 615 1235 1845 275 Body material: CF8M 1.448 451 to 8 F 8 285 41 825 1235 26 285 285 285 285 285 74 23 23 23 23 23 415 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 275 72 144 1485 16-75 to -21 F 275 275 72 144 216 275-2 to 1 F 275 275 72 144 216 275 11 to 45 F 18 18 495 975 1485 248 451 to 8 F 8 8 42 845 1265 211 81 to 1 F 2 2 35 7 15 175 275 275 275 275 6 6 23 23 23 23 23 415 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 115 1525 254 81 to 1 F 215 43 65 18 285 285 285 74 23 23 23 415 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 265 695 1395 29 348 11 to 4 F 2 2 615 123 1845 375 41 to 65 F 125 125 535 165 16 2665 285 285 285 285 285 74 23 23 23 23 23 415 H Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/35

Orifice J Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 25 x 3 WCB 5262.162X 5262.163X 5262.164X 5262.165X 5262.166X 5262.167X WC6 5267.168X 5267.169X 5267.17X 5267.171X 1 p [bar] 25 5 75 1 125 15 175 2 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] J 1 5 1 15 2 25 3 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 25 x 3 5264.196X 5264.197X 5264.198X 5264.199X 5264.2X 5264.21X 1 25 5 75 p [bar] 1 125 15 175 2 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 5 1 15 2 25 3 p [psig] 1/36 LWN 48.1-E

Orifice J Article numbers, dimensions and weights Article numbers Valve size 2 J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [mm] 36 36 36 36 36 36 Actual Orifice area A [mm 2 ] 118 118 118 118 118 118 Body material WCB 1.619 Art.-No. 5262.162 5262.163 5262.164 5262.165 5262.166 5262.167 CF8M 1.448 Art.-No. 5264.196 5264.197 5264.198 5264.199 5264.2 5264.21 WC6 1.7357 Art.-No. 5267.168 5267.169 5267.17 5267.171 LCB Art.-No. 5263.529 5263.53 5263.531 5263.532 5263.533 5263.534 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 44,6 44,6 77,7 77,7 1,2 1,2 [kg] with bellows 48,4 48,4 83,2 83,2 15,7 15,7 Center to face Inlet a 137 137 184 184 184 184 [mm] Outlet b 124 124 181 181 181 181 s 49 49 49 49 65 65 Height (H4) Standard H max. 673 673 786 786 786 786 [mm] Bellows H max. 722 722 824 824 824 824 Support brackets A 184 184 238 238 238 238 [mm] B 11 11 14 14 14 14 C Ø 14 Ø 14 Ø 18 Ø 18 Ø 18 Ø 18 D 184 184 234 234 234 234 E 16 16 25 25 25 25 J US Units Weight 98,3 98,3 171,3 171,3 22,9 22,9 [lbs] with bellows 16,7 16,7 183,5 183,5 233,1 233,1 Center to face Inlet a 5 3 / 8 5 3 / 8 7 1 / 4 7 1 / 4 7 1 / 4 7 1 / 4 [inch] Outlet b 4 7 / 8 4 7 / 8 7 1 / 8 7 1 / 8 7 1 / 8 7 1 / 8 s 1 15 / 16 1 15 / 16 1 15 / 16 1 15 / 16 2 9 / 16 2 9 / 16 Height (H4) Standard H max. 26 1 / 2 26 1 / 2 3 15 / 16 3 15 / 16 3 15 / 16 3 15 / 16 [inch] Bellows H max. 28 7 / 16 28 7 / 16 32 7 / 16 32 7 / 16 32 7 / 16 32 7 / 16 Support brackets A 7 1 / 4 7 1 / 4 9 3 / 8 9 3 / 8 9 3 / 8 9 3 / 8 [inch] B 4 11 / 32 4 11 / 32 5 1 / 2 5 1 / 2 5 1 / 2 5 1 / 2 C Ø 9 / 16 Ø 9 / 16 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 7 1 / 4 7 1 / 4 9 7 / 32 9 7 / 32 9 7 / 32 9 7 / 32 E 5 / 8 5 / 8 31 / 32 31 / 32 31 / 32 31 / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/37

Orifice J Pressure temperature ratings Metric Units J Valve size 2 J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [mm] 36 36 36 36 36 36 Actual Orifice area A [mm 2 ] 118 118 118 118 118 118 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 19,7 51, 12,1 153,1 186,2 39 to 232 C 12,8 19,7 42,4 85,2 127,2 186,2 Body material: CF8M 1.448 233 to 427 C 5,5 19,7 28,3 56,9 85,2 142,1 19,7 19,7 19,7 19,7 19,7 41,4 15,9 15,9 15,9 15,9 15,9 15,9 Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 19, 34,5 43,1 55,2 55,2-59 to -29 C 19, 19, 49,7 99,3 149, 186,2 Body material: WC6 1.7357-28 to 38 C 19, 19, 49,7 99,3 149, 186,2 39 to 232 C 12,4 12,4 34,1 67,2 12,4 171, 233 to 427 C 5,5 5,5 29, 58,3 87,2 145,5 428 to 538 C 1,4 1,4 24,1 48,3 72,4 12,7 19, 19, 19, 19, 19, 41,4 15,9 15,9 15,9 15,9 15,9 15,9 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 7, 15,2 175,2 428 to 538 C 14,8 29,7 44,8 74,5 Body material: LCB 19,7 19,7 19,7 41,4 15,9 15,9 15,9 15,9 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 18,4 48, 96, 144,1 24,1 39 to 2 C 13,8 13,8 42,5 85,1 127,6 212,7 21 to 343 C 8,4 8,4 36,4 72,8 19,2 182, 19,7 19,7 19,7 19,7 19,7 41,4 15,9 15,9 15,9 15,9 15,9 15,9 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/38 LWN 48.1-E

Orifice J Pressure temperature ratings US Units Valve size 2 J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [inch] 1,42 1,42 1,42 1,42 1,42 1,42 Actual Orifice area A [inch 2 ] 1,58 1,58 1,58 1,58 1,58 1,58 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 285 74 148 222 27 11 to 45 F 185 285 615 1235 1845 27 Body material: CF8M 1.448 451 to 8 F 8 285 41 825 1235 26 285 285 285 285 285 6 23 23 23 23 23 23 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 275 5 144 8 8-75 to -21 F 275 275 72 144 216 27-2 to 1 F 275 275 72 144 216 27 11 to 45 F 18 18 495 975 1485 248 451 to 8 F 8 8 42 845 1265 211 81 to 1 F 2 2 35 7 15 175 275 275 275 275 275 6 23 23 23 23 23 23 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 115 1525 254 81 to 1 F 215 43 65 18 285 285 285 6 23 23 23 23 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 265 695 1395 29 348 11 to 4 F 2 2 615 123 1845 375 41 to 65 F 125 125 535 165 16 2665 285 285 285 285 285 6 23 23 23 23 23 23 J Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/39

Orifice K Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 25 x 3 WCB 5262.22X 5262.23X 5262.24X 5262.25X 5262.26X WC6 5267.27X 5267.28X 5267.29X 5267.21X 1 p [bar] 25 5 75 1 125 15 175 2 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 5 1 15 2 25 K CF8M p [psig] 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 25 x 3 5264.211X 5264.212X 5264.213X 5264.214X 5264.215X 1 25 5 75 p [bar] 1 125 15 175 2 9 4 8 7 6 3 5 4 2 CF8M T [ F] 3 2 1 1 T [ C] -1-2 -1-3 -4-2 5 1 15 2 25 p [psig] 1/4 LWN 48.1-E

Orifice K Article numbers, dimensions and weights Article numbers Valve size 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [mm] 43 43 43 43 43 43 Actual Orifice area A [mm 2 ] 1452 1452 1452 1452 1452 1452 Body material WCB 1.619 Art.-No. 5262.22 5262.23 5262.24 5262.25 5262.26 CF8M 1.448 Art.-No. 5264.111 Use 3 K 4 5264.112 5264.113 5264.114 5264.115 WC6 1.7357 Art.-No. 3 x 15 5267.27 5267.28 5267.29 5267.21 LCB Art.-No. 5263.535 5263.536 5263.537 5263.538 5263.539 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Other WC6 Weight 7,1 7,1 77,7 7,1 127,5 127,5 [kg] with bellows 75,7 75,7 83,2 75,7 134,1 134,1 Center to face Inlet a 156 156 184 156 198 197 [mm] Outlet b 162 162 181 162 216 216 s 49 Use 3 K 4 49 49 49 67 65 Height (H4) Standard H max. 758 3 x 15 758 786 758 88 879 [mm] Bellows H max. 796 796 824 796 88 879 Support brackets A 238 238 238 238 278 278 [mm] B 14 14 14 14 16 16 C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D 26 26 234 26 288 287 E 25 25 25 25 25 25 US Units Weight 154,6 154,6 171,3 154,6 281,1 281,1 [lbs] with bellows 166,9 166,9 183,5 166,9 295,7 295,7 K Center to face Inlet a 6 1 / 8 6 1 / 8 7 1 / 4 6 1 / 8 7 13 / 16 7 3 / 4 [inch] Outlet b 6 3 / 8 6 3 / 8 7 1 / 8 6 3 / 8 8 1 / 2 8 1 / 2 s 1 15 / 16 Use 3 K 4 1 15 / 16 1 15 / 16 1 15 / 16 2 9 / 16 2 9 / 16 Height (H4) Standard H max. 29 27 / 32 3 x 15 29 27 / 32 3 15 / 16 29 27 / 32 34 21 / 32 34 19 / 32 [inch] Bellows H max. 31 11 / 32 31 11 / 32 32 7 / 16 31 11 / 32 34 21 / 32 34 19 / 32 Support brackets A 9 3 / 8 9 3 / 8 9 3 / 8 9 3 / 8 1 15 / 16 1 15 / 16 [inch] B 5 1 / 2 5 1 / 2 5 1 / 2 5 1 / 2 6 5 / 16 6 5 / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 8 3 / 32 8 3 / 32 9 7 / 32 8 3 / 32 11 11 / 32 11 9 / 32 E 31 / 32 31 / 32 31 / 32 31 / 32 31 / 32 31 / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/41

Orifice K Pressure temperature ratings Metric Units K Valve size 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [mm] 43 43 43 43 43 43 Actual Orifice area A [mm 2 ] 1452 1452 1452 1452 1452 1452 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 51, 12,1 153,1 153,1 39 to 232 C 12,8 42,4 85,2 127,2 153,1 233 to 427 C 5,5 28,3 56,9 85,2 142,1 Use 3 K 4 3 x 15 19,7 19,7 19,7 19,7 41,4 Body material: CF8M 1.448 1,3 1,3 13,8 13,8 13,8 Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 36,2 41,4 41,4 51,7-59 to -29 C 19, 49,7 99,3 149, 153,1 Body material: WC6 1.7357-28 to 38 C 19, 49,7 99,3 149, 153,1 39 to 232 C 12,4 34,1 67,2 12,4 171, 233 to 427 C 5,5 Use 3 K 4 29, 58,3 87,2 145,5 428 to 538 C 1,4 3 x 15 24,1 48,3 72,4 12,7 19, 19, 19, 19, 41,4 1,3 1,3 13,8 13,8 13,8 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 7, 15,2 153,1 428 to 538 C 14,8 29,7 44,8 74,5 Body material: LCB 19,7 19,7 19,7 41,4 1,3 13,8 13,8 13,8 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 48, 96, 144,1 24,1 39 to 2 C 13,8 42,5 85,1 127,6 212,7 21 to 343 C 8,4 36,4 72,8 19,2 182, Use 3 K 4 3 x 15 19,7 19,7 19,7 19,7 41,4 1,3 1,3 13,8 13,8 13,8 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/42 LWN 48.1-E

Orifice K Pressure temperature ratings US Units Valve size 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Actual Orifice diameter d [inch] 1,69 1,69 1,69 1,69 1,69 1,69 Actual Orifice area A [inch 2 ] 2,25 2,25 2,25 2,25 2,25 2,25 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 74 148 222 22 11 to 45 F 185 615 1235 1845 22 451 to 8 F 8 41 825 1235 26 Use 3 K 4 3 x 15 285 285 285 285 6 Body material: CF8M 1.448 15 15 2 2 2 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 525 6 6 75-75 to -21 F 275 72 144 216 222-2 to 1 F 275 72 144 216 222 11 to 45 F 18 495 975 1485 248 451 to 8 F 8 Use 3 K 4 42 845 1265 211 81 to 1 F 2 3 x 15 35 7 15 175 275 275 275 275 6 15 15 2 2 2 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 115 1525 222 81 to 1 F 215 43 65 18 285 285 285 6 15 2 2 2 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 695 1395 29 348 11 to 4 F 2 615 123 1845 375 41 to 65 F 125 535 165 16 2665 Use 3 K 4 3 x 15 285 285 285 285 6 15 15 2 2 2 K Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/43

Orifice L Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 WCB 5262.232X 5262.233X 5262.234X 5262.235X 5262.236X 5262.237X WC6 5267.238X 5267.239X 5267.24X 5267.241X 1 p [bar] 2 4 6 8 1 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 25 5 75 1 125 15 p [psig] L 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 CF8M 5264.242X 5264.243X 5264.244X 5264.245X 5264.246X 1 p [bar] 2 4 6 8 1 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 25 5 75 1 125 15 p [psig] 1/44 LWN 48.1-E

Orifice L Article numbers, dimensions and weights Article numbers Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 Actual Orifice diameter d [mm] 53,5 53,5 53,5 53,5 53,5 53,5 Body material Actual Orifice area A [mm 2 ] 2248 2248 2248 2248 2248 2248 WCB 1.619 Art.-No. 5262.232 5262.233 5262.234 5262.235 5262.236 5262.237 CF8M 1.448 Art.-No. 5264.242 5264.243 5264.244 5264.245 5264.246 WC6 1.7357 Art.-No. 5267.238 5267.239 5267.24 5267.241 LCB Art.-No. 5263.54 5263.541 5263.542 5263.543 5263.544 5263.545 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 7,1 7,1 112,2 122 134,1 127,5 [kg] with bellows 75,7 75,7 118,8 128,6 14,7 134,1 Center to face Inlet a 156 156 179 179 197 197 [mm] Outlet b 165 165 181 23 222 222 s 49 49 49 57 72 72 Height (H4) Standard H max. 758 758 853 853 871 871 [mm] Bellows H max. 796 796 886 886 94 94 Support brackets A 238 238 278 278 278 278 [mm] B 14 14 16 16 16 16 C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D 26 26 262 262 28 28 E 25 25 25 25 25 25 US Units Weight 154,6 154,6 247,4 269 295,7 281,1 [lbs] with bellows 166,9 166,9 262 283,6 31,2 295,7 Center to face Inlet a 6 1 / 8 6 1 / 8 7 1 / 16 7 1 / 16 7 3 / 4 7 3 / 4 [inch] Outlet b 6 1 / 2 6 1 / 2 7 1 / 8 8 8 3 / 4 8 3 / 4 L s 1 15 / 16 1 15 / 16 1 15 / 16 2 1 / 4 2 3 / 4 2 3 / 4 Height (H4) Standard H max. 29 27 / 32 29 27 / 32 33 19 / 32 33 19 / 32 34 9 / 32 34 9 / 32 [inch] Bellows H max. 31 11 / 32 31 11 / 32 34 7 / 8 34 7 / 8 35 19 / 32 35 19 / 32 Support brackets A 9 3 / 8 9 3 / 8 1 15 / 16 1 15 / 16 1 15 / 16 1 15 / 16 [inch] B 5 1 / 2 5 1 / 2 6 5 / 16 6 5 / 16 6 5 / 16 6 5 / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 8 3 / 32 8 3 / 32 1 15 / 16 1 15 / 16 11 11 E 31 / 32 31 / 32 31 / 32 31 / 32 31 / 32 31 / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/45

Orifice L Pressure temperature ratings Metric Units L Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 Actual Orifice diameter d [mm] 53,5 53,5 53,5 53,5 53,5 53,5 Actual Orifice area A [mm 2 ] 2248 2248 2248 2248 2248 2248 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 19,7 51, 69, 13,4 39 to 232 C 12,8 19,7 42,4 69, 13,4 Body material: CF8M 1.448 233 to 427 C 5,5 19,7 28,3 56,9 85,2 13,4 19,7 19,7 19,7 19,7 19,7 19,7 6,9 6,9 11,7 11,7 11,7 11,7 Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 19, 36,2 36,9 48,3-59 to -29 C 19, 19, 49,7 69, 13,4 Body material: WC6 1.7357-28 to 38 C 19, 19, 49,7 69, 13,4 39 to 232 C 12,4 12,4 34,1 67,2 12,4 233 to 427 C 5,5 5,5 29, 58,3 87,2 428 to 538 C 1,4 1,4 24,1 48,3 72,4 19, 19, 19, 19, 19, 6,9 6,9 11,7 11,7 11,7 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 69, 13,4 13,4 428 to 538 C 14,8 29,7 44,8 74,5 Body material: LCB 19,7 19,7 19,7 19,7 11,7 11,7 11,7 11,7 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 18,4 48, 96, 144,1 24,1 39 to 2 C 13,8 13,8 42,5 85,1 127,6 212,7 21 to 343 C 8,4 8,4 36,4 72,8 19,2 182, 19,7 19,7 19,7 19,7 19,7 19,7 6,9 6,9 11,7 11,7 11,7 11,7 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/46 LWN 48.1-E

Orifice L Pressure temperature ratings US Units Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 Actual Orifice diameter d [inch] 2,11 2,11 2,11 2,11 2,11 2,11 Actual Orifice area A [inch 2 ] 3,48 3,48 3,48 3,48 3,48 3,48 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 285 74 1 15 11 to 45 F 185 285 615 1 15 Body material: CF8M 1.448 451 to 8 F 8 285 41 825 1235 15 285 285 285 285 285 285 1 1 17 17 17 17 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 275 535 535 7-75 to -21 F 275 275 72 1 15-2 to 1 F 275 275 72 1 15 11 to 45 F 18 18 495 975 1485 451 to 8 F 8 8 42 845 1265 81 to 1 F 2 2 35 7 15 275 275 275 275 275 1 1 17 17 17 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 1 15 15 81 to 1 F 215 43 65 18 285 285 285 285 17 17 17 17 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 265 695 1395 29 348 11 to 4 F 2 2 615 123 1845 375 41 to 65 F 125 125 535 165 16 2665 285 285 285 285 285 285 1 1 17 17 17 17 L Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/47

Orifice M Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 WCB 5262.58X 5262.581X 5262.582X 5262.583X WC6 5267.584X 5267.585X 5267.586X 1 p [bar] 2 4 6 8 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 2 4 6 8 1 12 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 5264.587X 5264.588X 5264.589X M 1 p [bar] 2 4 6 8 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 2 4 6 8 1 12 p [psig] 1/48 LWN 48.1-E

Orifice M Article numbers, dimensions and weights Article numbers Valve size 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] 6,3 6,3 6,3 6,3 6,3 Actual Orifice area A [mm 2 ] 2856 2856 2856 2856 2856 Body material WCB 1.619 Art.-No. 5262.58 5262.581 5262.582 5262.583 CF8M 1.448 Art.-No. 5264.587 Use 4 M 6 5264.588 5264.589 WC6 1.7357 Art.-No. 3 x 15 5267.584 5267.585 5267.586 LCB Art.-No. 5263.546 5263.547 5263.548 5263.549 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 112,1 112,1 122 134,1 [kg] with bellows 118,7 118,7 128,6 134,1 Center to face Inlet a 178 178 178 197 [mm] Outlet b 184 184 23 222 s 48 Use 4 M 6 48 56 72 Height (H4) Standard H max. 852 3 x 15 852 852 871 [mm] Bellows H max. 885 885 885 94 Support brackets A 278 278 278 278 [mm] B 16 16 16 16 C Ø 18 Ø 18 Ø 18 Ø 18 D 26 26 26 28 E 25 25 25 25 US Units Weight 247,2 247,2 269 295,7 [lbs] with bellows 261,7 261,7 283,6 31,2 Center to face Inlet a 7 7 7 7 3 / 4 [inch] Outlet b 7 1 / 4 7 1 / 4 8 8 3 / 4 s 1 7 / 8 Use 4 M 6 1 7 / 8 2 3 / 16 2 3 / 4 Height (H4) Standard H max. 33 17 / 32 3 x 15 33 17 / 32 33 17 / 32 33 17 / 32 M [inch] Bellows H max. 34 27 / 32 34 27 / 32 34 27 / 32 34 27 / 32 Support brackets A 1 15 / 16 1 15 / 16 1 15 / 16 1 15 / 16 [inch] B 6 5 / 16 6 5 / 16 6 5 / 16 6 5 / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 1 1 / 4 1 1 / 4 1 1 / 4 11 E 31 / 32 31 / 32 31 / 32 31 / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/49

Orifice M Pressure temperature ratings Metric Units M Valve size 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] 6,3 6,3 6,3 6,3 6,3 Actual Orifice area A [mm 2 ] 2846 2846 2846 2846 2846 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 51, 75,9 39 to 232 C 12,8 42,4 75,9 233 to 427 C 5,5 Use 4 M 6 28,3 56,9 75,9 3 x 15 19,7 19,7 19,7 19,7 Body material: CF8M 1.448 5,5 11, 11, 11, Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 36,2 41,4-59 to -29 C 19, 49,7 69, Body material: WC6 1.7357-28 to 38 C 19, 49,7 69, 39 to 232 C 12,4 Use 4 M 6 34,1 67,2 233 to 427 C 5,5 3 x 15 29, 58,3 428 to 538 C 1,4 24,1 48,3 19, 19, 19, 5,5 11, 11, Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 69, 75,9 428 to 538 C 14,8 29,7 44,8 Body material: LCB Use 4 M 6 3 x 15 19,7 19,7 19,7 11, 11, 11, Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 48, 96, 144,1 39 to 2 C 13,8 42,5 85,1 127,6 21 to 343 C 8,4 Use 4 M 6 36,4 72,8 19,2 3 x 15 19,7 19,7 19,7 19,7 5,5 11, 11, 11, Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/5 LWN 48.1-E

Orifice M Pressure temperature ratings US Units Valve size 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [inch] 2,37 2,37 2,37 2,37 2,37 Actual Orifice area A [inch 2 ] 4,43 4,43 4,43 4,43 4,43 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 74 11 11 to 45 F 185 615 11 451 to 8 F 8 Use 4 M 6 41 825 11 3 x 15 285 285 285 285 Body material: CF8M 1.448 8 16 16 16 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 525 6-75 to -21 F 275 72 1-2 to 1 F 275 72 1 11 to 45 F 18 Use 4 M 6 495 975 451 to 8 F 8 3 x 15 42 845 81 to 1 F 2 35 7 275 275 275 8 16 16 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 1 11 81 to 1 F 215 43 65 Use 4 M 6 3 x 15 285 285 285 16 16 16 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 695 1395 29 11 to 4 F 2 615 123 1845 41 to 65 F 125 Use 4 M 6 535 165 16 3 x 15 285 285 285 285 8 16 16 16 M Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/51

Orifice N Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 WCB 5262.59X 5262.591X 5262.592X 5262.593X WC6 5267.594X 5267.595X 5267.596X 1 p [bar] 1 2 3 4 5 6 7 8 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 2 4 6 8 1 12 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 5264.597X 5264.598X 5264.599X 1 p [bar] 1 2 3 4 5 6 7 8 N 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 2 4 6 8 1 12 p [psig] 1/52 LWN 48.1-E

Orifice N Article numbers, dimensions and weights Article numbers Valve size 4 N 6 4 N 6 4 N 6 4 N 6 4 N 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] 66 66 66 66 66 Actual Orifice area A [mm 2 ] 3421 3421 3421 3421 3421 Body material WCB 1.619 Art.-No. 5262.59 5262.591 5262.592 5262.593 CF8M 1.448 Art.-No. 5264.597 Use 4 N 6 5264.598 5264.599 WC6 1.7357 Art.-No. 3 x 15 5267.594 5267.595 5267.596 LCB Art.-No. 5263.55 5263.551 5263.552 5263.553 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 128,6 128,6 134,1 134,1 [kg] with bellows 135,2 135,2 14,7 14,7 Center to face Inlet a 197 197 197 197 [mm] Outlet b 21 21 222 222 s 48 Use 4 N 6 48 72 72 Height (H4) Standard H max. 871 3 x 15 871 871 871 [mm] Bellows H max. 94 94 94 94 Support brackets A 278 278 278 278 [mm] B 16 16 16 16 C Ø 18 Ø 18 Ø 18 Ø 18 D 28 28 28 28 E 25 25 25 25 US Units Weight 283,6 283,6 295,7 295,7 [lbs] with bellows 298,1 298,1 31,2 31,2 Center to face Inlet a 7 3 / 4 7 3 / 4 7 3 / 4 7 3 / 4 [inch] Outlet b 8 1 / 4 8 1 / 4 8 3 / 4 8 3 / 4 s 1 7 / 8 Use 4 N 6 1 7 / 8 2 3 / 4 2 3 / 4 Height (H4) Standard H max. 34 9 / 32 3 x 15 34 9 / 32 34 9 / 32 34 9 / 32 [inch] Bellows H max. 35 19 / 32 35 19 / 32 35 19 / 32 35 19 / 32 Support brackets A 1 15 / 16 1 15 / 16 1 15 / 16 1 15 / 16 [inch] B 6 5 / 16 6 5 / 16 6 5 / 16 6 5 / 16 N C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 11 11 11 11 E 31 / 32 31 / 32 31 / 32 31 / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/53

Orifice N Pressure temperature ratings Metric Units N Valve size 4 N 6 4 N 6 4 N 6 4 N 6 4 N 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] 66 66 66 66 66 Actual Orifice area A [mm 2 ] 3421 3421 3421 3421 3421 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 51, 69, 39 to 232 C 12,8 42,4 69, 233 to 427 C 5,5 Use 4 N 6 28,3 56,9 69, 3 x 15 19,7 19,7 19,7 19,7 Body material: CF8M 1.448 5,5 11, 11, 11, Pressure range p [bar] S/G/L Maximum -268 to -6 C 19, 31, 34,5-59 to -29 C 19, 49,7 69, Body material: WC6 1.7357-28 to 38 C 19, 49,7 69, 39 to 232 C 12,4 Use 4 N 6 34,1 67,2 233 to 427 C 5,5 3 x 15 29, 58,3 428 to 538 C 1,4 24,1 48,3 19, 19, 19, 5,5 11, 11, Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 69, 69, 428 to 538 C 14,8 29,7 44,8 Body material: LCB Use 4 N 6 3 x 15 19,7 19,7 19,7 11, 11, 11, Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 48, 96, 144,1 39 to 2 C 13,8 42,5 85,1 127,6 21 to 343 C 8,4 Use 4 N 6 36,4 72,8 19,2 3 x 15 19,7 19,7 19,7 19,7 5,5 11, 11, 11, Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/54 LWN 48.1-E

Orifice N Pressure temperature ratings US Units Valve size 4 N 6 4 N 6 4 N 6 4 N 6 4 N 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [inch] 2,6 2,6 2,6 2,6 2,6 Actual Orifice area A [inch 2 ] 5,3 5,3 5,3 5,3 5,3 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 74 1 11 to 45 F 185 615 1 451 to 8 F 8 Use 4 N 6 41 825 1 3 x 15 285 285 285 285 Body material: CF8M 1.448 8 16 16 16 Pressure range p [psig] S/G/L Maximum -45 to -76 F 275 45 5-75 to -21 F 275 72 1-2 to 1 F 275 72 1 11 to 45 F 18 Use 4 N 6 495 975 451 to 8 F 8 3 x 15 42 845 81 to 1 F 2 35 7 275 275 275 8 16 16 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 1 1 81 to 1 F 215 43 65 Use 4 N 6 3 x 15 285 285 285 16 16 16 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 695 1395 29 11 to 4 F 2 615 123 1845 41 to 65 F 125 Use 4 N 6 535 165 16 3 x 15 285 285 285 285 8 16 16 16 N Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/55

Orifice P Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 WCB 5262.645X 5262.646X 5262.647X 5262.648X 5262.649X WC6 5267.65X 5267.651X 5267.652X 1 p [bar] 1 2 3 4 5 6 7 8 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 2 4 6 8 1 12 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 5264.653X 5264.654X 5264.655X 5264.656X 1 p [bar] 1 2 3 4 5 6 7 8 P 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -3-4 -1-2 2 4 6 8 1 12 p [psig] 1/56 LWN 48.1-E

Orifice P Article numbers, dimensions and weights Article numbers Valve size 4 P 6 4 P 6 4 P 6 4 P 6 4 P 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] 8 8 8 8 8 Body material Actual Orifice area A [mm 2 ] 527 527 527 527 527 WCB 1.619 Art.-No. 5262.645 5262.646 5262.647 5262.648 5262.649 CF8M 1.448 Art.-No. 5264.653 5264.654 5264.655 5264.656 WC6 1.7357 Art.-No. 5267.55 5267.551 5267.552 LCB Art.-No. 5263.554 5263.555 5263.556 5263.557 5263.558 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 17,7 17,7 164 164 164 [kg] with bellows 114,8 114,8 172 172 172 Center to face Inlet a 181 181 225 225 225 [mm] Outlet b 229 229 254 254 254 s 48 48 62 62 62 Height (H4) Standard H max. 855 855 179 179 179 [mm] Bellows H max. 888 888 1138 1138 1138 Support brackets A 278 278 37 37 37 [mm] B 16 16 21 21 21 C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D 262 262 36 36 36 E 25 25 25 25 25 US Units Weight 237,5 237,5 361,6 361,6 361,6 [lbs] with bellows 253,1 253,1 379,3 379,3 379,3 Center to face Inlet a 7 1 / 8 7 1 / 8 8 7 / 8 8 7 / 8 8 7 / 8 [inch] Outlet b 9 9 1 1 1 s 1 7 / 8 1 7 / 8 2 7 / 16 2 7 / 16 2 7 / 16 Height (H4) Standard H max. 33 21 / 32 33 21 / 32 42 1 / 2 42 1 / 2 42 1 / 2 [inch] Bellows H max. 34 31 / 32 34 31 / 32 44 13 / 16 44 13 / 16 44 13 / 16 Support brackets A 1 15 / 16 1 15 / 16 14 9 / 16 14 9 / 16 14 9 / 16 [inch] B 6 5 / 16 6 5 / 16 8 9 / 32 8 9 / 32 8 9 / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 1 5 / 16 1 5 / 16 12 1 / 16 12 1 / 16 12 1 / 16 E 31 / 32 31 / 32 31 / 32 31 / 32 31 / 32 P Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/57

Orifice P Pressure temperature ratings Metric Units P Valve size 4 P 6 4 P 6 4 P 6 4 P 6 4 P 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] 8 8 8 8 8 Actual Orifice area A [mm 2 ] 527 527 527 527 527 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 19,7 19,7 36,2 69, 39 to 232 C 12,8 19,7 36,2 69, Body material: CF8M 1.448 233 to 427 C 5,5 19,7 28,3 56,9 69, 19,7 19,7 19,7 19,7 19,7 5,5 5,5 1,3 1,3 1,3 Pressure range p [bar] S/G/L Maximum -268 to -6 C 12,1 12,1 2,7 33,1-59 to -29 C 19, 19, 36,2 69, Body material: WC6 1.7357-28 to 38 C 19, 19, 36,2 69, 39 to 232 C 12,4 12,4 34,1 67,2 233 to 427 C 5,5 5,5 29, 58,3 428 to 538 C 1,4 1,4 24,1 48,3 19, 19, 19, 19, 5,5 5,5 1,3 1,3 Pressure range p [bar] S/G/L Maximum 233 to 427 C 35,2 69, 69, 428 to 538 C 14,8 29,7 44,8 Body material: LCB 19,7 19,7 19,7 1,3 1,3 1,3 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 18,4 48, 96, 144,1 39 to 2 C 13,8 13,8 42,5 85,1 127,6 21 to 343 C 8,4 8,4 36,4 72,8 19,2 19,7 19,7 19,7 19,7 19,7 5,5 5,5 1,3 1,3 1,3 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/58 LWN 48.1-E

Orifice P Pressure temperature ratings US Units Valve size 4 P 6 4 P 6 4 P 6 4 P 6 4 P 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [inch] 3,15 3,15 3,15 3,15 3,15 Actual Orifice area A [inch 2 ] 7,79 7,79 7,79 7,79 7,79 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 285 285 525 1 11 to 45 F 185 285 525 1 Body material: CF8M 1.448 451 to 8 F 8 285 41 825 1 285 285 285 285 285 8 8 15 15 15 Pressure range p [psig] S/G/L Maximum -45 to -76 F 175 175 3 48-75 to -21 F 275 275 525 1-2 to 1 F 275 275 525 1 11 to 45 F 18 18 495 975 451 to 8 F 8 8 42 845 81 to 1 F 2 2 35 7 275 275 275 275 8 8 15 15 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 51 1 1 81 to 1 F 215 43 65 285 285 285 15 15 15 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 265 695 1395 29 11 to 4 F 2 2 615 123 1845 41 to 65 F 125 125 535 165 16 285 285 285 285 285 8 8 15 15 15 P Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/59

Orifice Q Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 WCB 5262.657X 5262.658X 5262.659X WC6 5267.66X 5267.661X 1 p [bar] 5 1 15 2 25 3 35 4 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 1 2 3 4 5 6 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 5264.662X 5264.663X 5264.664X 1 p [bar] 5 1 15 2 25 3 35 4 9 4 8 7 6 3 Q CF8M T [ F] 5 4 3 2 1 2 1 T [ C] -1-2 -1-3 -4-2 1 2 3 4 5 6 p [psig] 1/6 LWN 48.1-E

Orifice Q Article numbers, dimensions and weights Article numbers Valve size 6 Q 8 6 Q 8 6 Q 8 6 Q 8 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [mm] 15,5 15,5 15,5 15,5 Actual Orifice area A [mm 2 ] 8742 8742 8742 8742 Body material WCB 1.619 Art.-No. 5262.657 5262.658 5262.659 CF8M 1.448 Art.-No. 5264.662 Use 6 Q 8 5264.663 5264.664 WC6 1.7357 Art.-No. 3 x 15 5267.66 5267.661 LCB Art.-No. 5263.559 5263.56 5263.561 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 221 221 221 [kg] with bellows 23 23 23 Center to face Inlet a 24 24 24 [mm] Outlet b 241 241 241 s 68 Use 6 Q 8 68 68 Height (H4) Standard H max. 112 3 x 15 112 112 [mm] Bellows H max. 12 12 12 Support brackets A 37 37 37 [mm] B 21 21 21 C Ø 18 Ø 18 Ø 18 D 346 346 346 E 25 25 25 US Units Weight 487,3 487,3 487,3 [lbs] with bellows 57,2 57,2 57,2 Center to face Inlet a 9 7 / 16 9 7 / 16 9 7 / 16 [inch] Outlet b 9 1 / 2 9 1 / 2 9 1 / 2 s 2 11 / 16 Use 6 Q 8 2 11 / 16 2 11 / 16 Height (H4) Standard H max. 44 1 / 8 3 x 15 44 1 / 8 44 1 / 8 [inch] Bellows H max. 47 1 / 4 47 1 / 4 47 1 / 4 Support brackets A 14 9 / 16 14 9 / 16 14 9 / 16 [inch] B 8 9 / 32 8 9 / 32 8 9 / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 13 5 / 8 13 5 / 8 13 5 / 8 E 31 / 32 31 / 32 31 / 32 Code for lifting device Q Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 Support brackets LWN 48.1-E 1/61

Orifice Q Pressure temperature ratings Metric Units Q Valve size 6 Q 8 6 Q 8 6 Q 8 6 Q 8 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [mm] 15,5 15,5 15,5 15,5 Actual Orifice area A [mm 2 ] 8742 8742 8742 8742 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 11,4 2,7 41,4 39 to 232 C 11,4 2,7 41,4 233 to 427 C 5,5 Use 6 Q 8 2,7 41,4 3 x 15 7,9 7,9 7,9 Body material: CF8M 1.448 4,8 7,9 7,9 Pressure range p [bar] S/G/L Maximum -268 to -6 C 11,4 17,2 2,7-59 to -29 C 11,4 2,7 41,4 Body material: WC6 1.7357-28 to 38 C 11,4 2,7 41,4 39 to 232 C 11,4 Use 6 Q 8 2,7 41,4 233 to 427 C 5,5 3 x 15 2,7 41,4 428 to 538 C 1,4 2,7 41,4 7,9 7,9 7,9 4,8 7,9 7,9 Pressure range p [bar] S/G/L Maximum 233 to 427 C 11,4 41,4 428 to 538 C 11,4 29,7 Body material: LCB Use 6 Q 8 3 x 15 7,9 7,9 7,9 7,9 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 48, 96, 39 to 2 C 13,8 42,5 85,1 21 to 343 C 8,4 36,4 72,8 Use 6 Q 8 3 x 15 7,9 7,9 7,9 4,8 7,9 7,9 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/62 LWN 48.1-E

Orifice Q Pressure temperature ratings US Units Valve size 6 Q 8 6 Q 8 6 Q 8 6 Q 8 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [inch] 4,15 4,15 4,15 4,15 Actual Orifice area A [inch 2 ] 13,55 13,55 13,55 13,55 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 165 3 6 11 to 45 F 165 3 6 451 to 8 F 8 Use 6 Q 8 3 6 3 x 15 115 115 115 Body material: CF8M 1.448 7 115 115 Pressure range p [psig] S/G/L Maximum -45 to -76 F 165 25 3-75 to -21 F 165 3 6-2 to 1 F 165 3 6 11 to 45 F 165 Use 6 Q 8 3 6 451 to 8 F 8 3 x 15 3 6 81 to 1 F 2 3 6 115 115 115 7 115 115 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 165 6 81 to 1 F 165 43 Use 6 Q 8 3 x 15 115 115 115 115 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 695 1395 11 to 4 F 2 615 123 41 to 65 F 125 Use 6 Q 8 535 165 3 x 15 115 115 115 7 115 115 Q Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/63

Orifice R Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 WCB 5262.665X 5262.666X 5262.667X 5262.668X WC6 5267.669X 5267.67X 1 p [bar] 5 1 15 2 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 5 1 15 2 25 3 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 5264.671X 5264.672X 5264.673X 5264.674X 1 p [bar] 5 1 15 2 9 4 8 7 6 3 5 4 2 R CF8M T [ F] 3 2 1 1 T [ C] -1-2 -1-3 -4-2 5 1 15 2 25 3 p [psig] 1/64 LWN 48.1-E

Orifice R Article numbers, dimensions and weights Article numbers Valve size 6 R 8 6 R 8 6 R 1 6 R 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [mm] 126,5 126,5 126,5 126,5 Actual Orifice area A [mm 2 ] 12568 12568 12568 12568 Body material WCB 1.619 Art.-No. 5262.665 5262.666 5262.667 5262.668 CF8M 1.448 Art.-No. 5264.671 5264.672 5264.673 5264.674 WC6 1.7357 Art.-No. 5267.669 5267.67 LCB Art.-No. 5263.562 5263.563 5263.564 5263.565 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 221 221 277 277 [kg] with bellows 23 23 288 288 Center to face Inlet a 24 24 24 24 [mm] Outlet b 241 241 241 241 s 68 68 7 7 Height (H4) Standard H max. 112 112 1426 1426 [mm] Bellows H max. 12 12 1426 1426 Support brackets A 37 37 47 47 [mm] B 21 21 15 15 C Ø 18 Ø 18 Ø 18 Ø 18 D 346 346 46 46 E 25 25 25 25 US Units Weight 487,3 487,3 61,8 61,8 [lbs] with bellows 57,2 57,2 635 635 Center to face Inlet a 9 7 / 16 9 7 / 16 9 7 / 16 9 7 / 16 [inch] Outlet b 9 1 / 2 9 1 / 2 1 1 / 2 1 1 / 2 s 2 11 / 16 2 11 / 16 2 3 / 4 2 3 / 4 Height (H4) Standard H max. 44 1 / 8 44 1 / 8 56 1 / 8 56 1 / 8 [inch] Bellows H max. 47 1 / 4 47 1 / 4 56 1 / 8 56 1 / 8 Support brackets A 14 9 / 16 14 9 / 16 5 1 / 8 5 1 / 8 [inch] B 8 9 / 32 8 9 / 32 5 29 / 32 5 29 / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 13 5 / 8 13 5 / 8 18 1 / 8 18 1 / 8 E 31 / 32 31 / 32 31 / 32 31 / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 R Support brackets LWN 48.1-E 1/65

Orifice R Pressure temperature ratings Metric Units R Valve size 6 R 8 6 R 8 6 R 1 6 R 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [mm] 126,5 126,5 126,5 126,5 Actual Orifice area A [mm 2 ] 12668 12668 12668 12668 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 6,9 6,9 15,9 2,7 39 to 232 C 6,9 6,9 15,9 2,7 Body material: CF8M 1.448 233 to 427 C 5,5 6,9 15,9 2,7 4,1 4,1 6,9 6,9 4,1 4,1 6,9 6,9 Pressure range p [bar] S/G/L Maximum -268 to -6 C 3,8 3,8 1,3 13,8-59 to -29 C 6,9 6,9 15,9 2,7 Body material: WC6 1.7357-28 to 38 C 6,9 6,9 15,9 2,7 39 to 232 C 6,9 6,9 15,9 2,7 233 to 427 C 5,5 5,5 15,9 2,7 428 to 538 C 1,4 1,4 15,9 2,7 4,1 4,1 6,9 6,9 4,1 4,1 6,9 6,9 Pressure range p [bar] S/G/L Maximum 233 to 427 C 6,9 2,7 428 to 538 C 6,9 2,7 Body material: LCB 4,1 6,9 4,1 6,9 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 18,4 48, 96, 39 to 2 C 13,8 13,8 42,5 85,1 21 to 343 C 8,4 8,4 36,4 72,8 4,1 4,1 6,9 6,9 4,1 4,1 6,9 6,9 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/66 LWN 48.1-E

Orifice R Pressure temperature ratings US Units Valve size 6 R 8 6 R 8 6 R 1 6 R 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [inch] 4,98 4,98 4,98 4,98 Actual Orifice area A [inch 2 ] 19,48 19,48 19,48 19,48 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 1 1 23 3 11 to 45 F 1 1 23 3 Body material: CF8M 1.448 451 to 8 F 8 1 23 3 6 6 1 1 6 6 1 1 Pressure range p [psig] S/G/L Maximum -45 to -76 F 55 55 15 2-75 to -21 F 1 1 23 3-2 to 1 F 1 1 23 3 11 to 45 F 1 1 23 3 451 to 8 F 8 8 23 3 81 to 1 F 2 2 23 3 6 6 1 1 6 6 1 1 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 1 3 81 to 1 F 1 3 6 1 6 1 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 265 695 1395 11 to 4 F 2 2 615 123 41 to 65 F 125 125 535 165 6 6 1 1 6 6 1 1 R Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/67

Orifice T Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 WCB 5262.675X 5262.676X WC6 5267.677X 1 p [bar] 5 1 15 2 WCB WC6 T [ F] 9 8 7 6 5 4 3 2 4 3 2 1 T [ C] 1 5 1 15 2 25 3 p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 25 x 3 5264.678X 5264.679X 1 p [bar] 5 1 15 2 9 8 7 6 4 3 CF8M T [ F] 5 4 3 2 1 2 1 T [ C] T -1-2 -3-4 -1-2 5 1 15 2 25 3 p [psig] 1/68 LWN 48.1-E

Orifice T Article numbers, dimensions and weights Article numbers Valve size 8 T 1 8 T 1 8 T 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 Actual Orifice diameter d [mm] 161,5 161,5 161,5 Actual Orifice area A [mm 2 ] 2485 2485 2485 Body material WCB 1.619 Art.-No. 5262.675 5262.676 CF8M 1.448 Art.-No. 5264.678 Use 8 T 1 5264.679 WC6 1.7357 Art.-No. 3 x 15 5267.677 LCB Art.-No. 5263.566 5263.567 ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 287 287 [kg] with bellows 298 298 Center to face Inlet a 276 276 [mm] Outlet b 279 279 s 62 Use 8 T 1 62 Height (H4) Standard H max. 1462 3 x 15 1462 [mm] Bellows H max. 1462 1462 Support brackets A 47 47 [mm] B C Ø 18 Ø 18 D 497 497 E 25 25 US Units Weight 632,8 632,8 [lbs] with bellows 657,1 657,1 Center to face Inlet a 1 7 / 8 1 7 / 8 [inch] Outlet b 11 11 s 2 7 / 16 Use 8 T 1 2 7 / 16 Height (H4) Standard H max. 57 9 / 16 3 x 15 57 9 / 16 [inch] Bellows H max. 57 9 / 16 57 9 / 16 Support brackets A 18 1 / 2 18 1 / 2 [inch] B C Ø 23 / 32 Ø 23 / 32 D 19 9 / 16 19 9 / 16 E 31 / 32 31 / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC6 1.7357, LCB 2 3 4 5 CF8M 1.448 2 4 T Support brackets LWN 48.1-E 1/69

Orifice T Pressure temperature ratings Metric Units T Valve size 8 T 1 8 T 1 8 T 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 Actual Orifice diameter d [mm] 161,5 161,5 161,5 Actual Orifice area A [mm 2 ] 2485 2485 2485 Body material: WCB 1.619 Pressure range p [bar] S/G/L Maximum -29 to 38 C 4,5 2,7 39 to 232 C 4,5 2,7 233 to 427 C 4,5 Use 8 T 1 2,7 3 x 15 2,1 6,9 Body material: CF8M 1.448 2,1 6,9 Pressure range p [bar] S/G/L Maximum -268 to -6 C 3,4 4,5-59 to -29 C 4,5 8,3 Body material: WC6 1.7357-28 to 38 C 4,5 8,3 39 to 232 C 4,5 Use 8 T 1 8,3 233 to 427 C 4,5 3 x 15 8,3 428 to 538 C 1,4 8,3 2,1 4,1 2,1 4,1 Pressure range p [bar] S/G/L Maximum 233 to 427 C 2,7 428 to 538 C 15,5 Body material: LCB Use 8 T 1 3 x 15 6,9 6,9 Pressure range p [bar] S/G/L Maximum -46 to 38 C 18,4 48, 39 to 2 C 13,8 42,5 21 to 343 C 8,4 36,4 Use 8 T 1 3 x 15 2,1 6,9 2,1 6,9 Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. 1/7 LWN 48.1-E

Orifice T Pressure temperature ratings US Units Valve size 8 T 1 8 T 1 8 T 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 Actual Orifice diameter d [inch] 6,36 6,36 6,36 Actual Orifice area A [inch 2 ] 31,75 31,75 31,75 Body material: WCB 1.619 Pressure range p [psig] S/G/L Maximum -2 to 1 F 65 3 11 to 45 F 65 3 451 to 8 F 65 Use 8 T 1 3 3 x 15 3 1 Body material: CF8M 1.448 3 1 Pressure range p [psig] S/G/L Maximum -45 to -76 F 5 65-75 to -21 F 65 12-2 to 1 F 65 12 11 to 45 F 65 Use 8 T 1 12 451 to 8 F 65 3 x 15 12 81 to 1 F 2 12 3 6 3 6 Body material: WC6 1.7357 Pressure range p [psig] S/G/L Maximum 451 to 8 F 3 81 to 1 F 225 Use 8 T 1 3 x 15 1 1 Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F 265 695 11 to 4 F 2 615 41 to 65 F 125 Use 8 T 1 535 3 x 15 3 1 3 1 T Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.619 with the respective pressure-temperature range as well. LWN 48.1-E 1/71

Flange drillings Type 526 Standard Flange drillings according to DIN EN 192 (up to PN 1) and DIN 251 (from PN 16 up) Inlet Outlet Material Inlet Outlet Orifice NPS standard NPS WCB/ PN PN PN PN PN PN PN PN PN PN PN PN PN PN [inch] flange class [inch] LCB WC6 CF8M 1/16 25 4 63 1 16 25 32 4 1 16 25 4 63 1" 3 2" H45 H46 H47 H5 H51 H52 H15 D 1" 6 2" H1 H17 H5 H51 H52 H15 1 1 / 2 " 15 2" H11 H12 H5 H51 H52 H15 1 1 / 2 " 25 3" H12 H13 H5 H51 H52 H15 H16 1" 3 2" H45 H46 H47 H5 H51 H52 H15 E 1" 6 2" H1 H17 H5 H51 H52 H15 1 1 / 2 " 15 2" H11 H12 H5 H51 H52 H15 1 1 / 2 " 25 3" H12 H13 H5 H51 H52 H15 H16 1 1 / 2 " 3L 2" H45 H5 H51 H52 H15 F 1 1 / 2 " 3 2" H46 H47 H5 H51 H52 H15 1 1 / 2 " 15 3" H1 H17 H11 H12 H5 H51 H52 H15 H16 1 1 / 2 " 25 3" H12 H13 H5 H51 H52 H15 H16 1 1 / 2 " 3L 3" H45 H5 H51 H52 H15 1 1 / 2 " 3 3" H46 H47 H1 H5 H51 H52 H15 G 1 1 / 2 " 6 3" H1 H17 H11 H5 H51 H52 H15 1 1 / 2 " 9 3" H17 H11 H5 H51 H52 H15 H16 2" 15 3" H12 H13 H5 H51 H52 H15 H16 2" 25 3" H14 H5 H51 H52 H15 H16 1 1 / 2 " 3L 3" H45 H46 H47 H5 H51 H52 H15 2" 3 3" H47 H1 H5 H51 H52 H15 H 2" 6 3" H47 H1 H5 H51 H52 H15 2" 6 3" H47 H1 H5 H51 H52 H15 H16 2" 9 3" H17 H11 H5 H51 H52 H15 H16 2" 15 3" H11 H12 H5 H51 H52 H15 H16 2" 3L 3" H45 H46 H47 H1 H5 H51 H52 H15 J 3" 6 4" H47 H1 H5 H51 H52 H15 3" 9 4" H17 H11 H5 H51 H52 H15 H16 3" 15 4" H11 H12 H5 H51 H52 H15 H16 3" 3 4" H45 H46 H47 H1 H5 H51 H52 H15 3" 6 4" H47 H1 H5 H51 H52 H15 K 3" 9 6" H1 H17 H11 H12 H5 H51 3" 9 6" H1 H17 H11 H12 H5 H51 H52 H15 3" 15 6" H1 H17 H11 H12 H5 H51 H52 H15 3" 3L 4" H45 H46 H47 H1 H5 H51 H52 H15 4" 3 6" H45 H46 H47 H1 H5 H51 L 4" 6 6" H1 H17 H11 H5 H51 4" 9 6" H17 H11 H5 H51 4" 15 6" H12 H5 H51 4" 3 6" H45 H46 H47 H1 H5 H51 M 4" 6 6" H1 H17 H11 H5 H51 4" 9 6" H17 H11 H12 H5 H51 4" 3 6" H45 H46 H47 H1 H5 H51 N 4" 6 6" H17 H11 H5 H51 4" 9 6" H12 H5 H51 4" 3L 6" H45 H46 H47 H5 H51 P 4" 3 6" H46 H47 H5 H51 4" 6 6" H1 H17 H5 H51 4" 9 6" H11 H12 H5 H51 Q 6" 3 8" H45 H46 H47 H5 H51 H52 6" 6 8" H1 H17 H11 H5 H51 H52 6" 3L 8" H45 H46 H47 H1 H5 H51 H52 R 6" 3 1" H47 H1 H5 H51 6" 6 1" H47 H1 H5 H51 T 8" 3 1" H46 H47 H5 H51 Note: Flange drillings and facings meet always the requirements of mentioned flange standards. Flange thickness and outer diameter may vary from flange standard. For signs and symbols refer to page /5 1/72 LWN 48.1-E

Flange facings Indication Standard Inlet Outlet Remark General Flange undrilled H38 H39 Linde-V-Nut, Form V48 Linde Standard 42-8 J7 J8 Groove: Rz 16 Linde-V-Nut, Form V48A LWN 313.36 J5 J6 Groove: Rz 4, e.g. with hydrogen Type 526 Lens seal form L (without sealing lens) Acc. to DIN EN DIN 2696 LWN 313.35 J11 Flange facing Inlet Outlet Remark J12 Raised face DIN EN 192 (new) DIN 2526 (see also LWN 313.4) (old) Type B1 PN 1 PN 4 Type C Type D PN 63 PN 4 PN 1 PN 4 1) According to DIN EN 192 groove depths and tongue heights increased compared to the formerly valid DIN (refer to LWN 313.4). LESER manufactures the groove at flanged valves by milling. If a customer demands a turned surface in the soil of the groove according to DIN 2512 and/or DIN EN 192-1 an additional option code is necessary: S1: bottom of the groove drilled. Groove and tongue for PN16 flanges refer to DIN 2512/LWN 313.32. 2) Smooth finish is not defined in the effective standards. For LESER s definition for smooth finish see page /5. For signs and symbols refer to page /5 Note: Flange drillings and facings meet always the requirements of mentioned flange standards. Flange thickness and outer diameter may vary from flange standard. * * * L38 PN 63 * Rz-data according to DIN EN 192 in µm Facing: Rz = 12,5 5 Type B2 Type E L38 Facing: Rz = 3,2 12,5 Tongue face C 1) Tongue face F L56 H92 Groove face D 1) Groove face N L55 H91 Male face E Male face V13 I9 H98 Female face F Female face R13 I91 H99 O-ring male face G Male face V14 I93 J2 O-ring female face H Female face R14 I92 J4 Acc. to ASME B16.5 Smooth finish 2) Serrated finish RTJ-groove Body material Inlet Outlet Inlet Outlet Inlet Outlet Inlet Outlet Option code Option code CL3 CL6 CL9 CL15 CL25 CL15 CL3 all all all L52 L53 * * L58 H63 Stud-bolts length for flange connection inlet and outlet All LESER safety valves Type 526 need at the inlet side longer stud-bolts for the flange connections as stated in ASME B16.5, due to the full nozzle design. Furthermore, due to the actual castings the stud bolts at the outlet can differ from ASME B16.5 as well. LESER state the stud-bolt length in LWN 1.29-E. For calculation of stud-bolts length the measure s stated on page 1/1-1/13 can be used. Connection acc. to API Standard 526-1984 Valve size Flange rating class Orifice Option code Inlet Outlet Inlet E 1 1 / 2 " 3" drilled 2 1 / 2 " 25 S1 F 1 1 / 2 " 3" drilled 2 1 / 2 " 9 S1 G 1 1 / 2 " 3" drilled 2 1 / 2 " 15 9 S1 K 2 1 / 2 " 6" 9 15 S1 LWN 48.1-E 1/73

How to order Type 526 with outlet flange rating class 3 For customer specifications requiring a flange rating class 3 at the outlet LESER provides Type 526 with outlet flange rating class 3. For ordering please state the article numbers and option codes which are listed in the table. Type 526 Orifice Outlet with flange class 3 Valve size Inlet x Outlet Center to face a x b Body material 3 x 3 6 x 3 Art.-No. Option code Art.-No. Option code D D E E F G H J K L M N P Q R T 1" x 2" 4 5 / 7 " x 5 1 / 8 " 1 1 / 2 " x 2" 4 1 / 8 " x 5 1 / 2 " 1" x 2" 4 5 / 7 " x 5 1 / 8 " 1 1 / 2 " x 2" 4 1 / 8 " x 5 1 / 2 " 1 1 / 2 " x 2" 4 7 / 8 " x 6" 1 1 / 2 " x 3" 4 7 / 8 " x 6 1 / 2 " 2" x 3" 6 1 / 16 " x 6 3 / 8 " 3" x 4" 7 1 / 4 " x 7 1 / 8 " 3" x 4" 7 13 / 16 " x 7 1 / 8 " 4" x 6" 7 3 / 4 " x 8 1 / 2 " 4" x 6" 7 3 / 4 " x 8 1 / 2 " 4" x 6" 7 3 / 4 " x 8 1 / 2 " 4" x 6" Welded outlet flange 8 7 / 8 " x 11 5 / 8 " 6" x 8" Welded outlet flange 9 7 / 16 " x 12" 6" x 1" Welded outlet flange 9 7 / 16 " x 13 1 / 5 " 8" x 1" Welded outlet flange 1 7 / 8 " x 13 1 / 5 " WCB 1.619 4582.61X H65, H8, J18, J51 4582.61X H67, H8, J18, J51 CF1M 1.4581 4584.62X H65, H8, J18, J51 4584.62X H67, H8, J18, J51 WC6 1.7357 4587.63X H65, H8, J18, J51 4587.63X H67, H8, J18, J51 LCB WCB 1.619 5262.4X H65, H8 5262.4X H67, H8 CF8M 1.448 5264.13X H65, H8 5264.13X H67, H8 WC6 1.7357 5267.8X H65, H8 5267.8X H67, H8 LCB 5263.53X H65, H8 5263.53X H67, H8 WCB 1.619 4582.61X H65, H8, J18, J51 4582.61X H67, H8, J18, J51 CF1M 1.4581 4584.62X H65, H8, J18, J51 4584.62X H67, H8, J18, J51 WC6 1.7357 4587.63X H65, H8, J18, J51 4587.63X H67, H8, J18, J51 LCB WCB 1.619 5262.18X H65, H8 5262.18X H67, H8 CF8M 1.448 5264.27X H65, H8 5264.27X H67, H8 WC6 1.7357 5267.22X H65, H8 5267.22X H67, H8 LCB 5263.58X H65, H8 5263.58X H67, H8 WCB 1.619 5262.31X H65, H8 5262.32X H67, H8 CF8M 1.448 5264.41X H65, H8 5264.41X H67, H8 WC6 1.7357 5267.35X H65, H8 5267.36X H67, H8 LCB 5263.512X H65, H8 5263.512X H67, H8 WCB 1.619 5262.49X H65, H8 5262.49X H67, H8 CF8M 1.448 5264.114X H65, H8 5264.114X H67, H8 WC6 1.7357 5267.54X H65, H8 5267.54X H67, H8 LCB 5263.52X H65, H8 5263.52X H67, H8 WCB 1.619 5262.146X H65, H8 5262.146X H67, H8 CF8M 1.448 5264.156X H65, H8 5264.156X H67, H8 WC6 1.7357 5267.15X H65, H8 5267.15X H67, H8 LCB 5263.527X H65, H8 5263.527X H67, H8 WCB 1.619 5262.166X H65, H8 5262.166X H67, H8 CF8M 1.448 5264.2X H65, H8 5264.2X H67, H8 WC6 1.7357 5267.17X H65, H8 5267.17X H67, H8 LCB 5263.533X H65, H8 5263.533X H67, H8 WCB 1.619 5262.24X H65, H8 5262.24X H67, H8 CF8M 1.448 5264.213X H65, H8 5264.213X H67, H8 WC6 1.7357 5267.29X H65, H8 5267.29X H67, H8 LCB 5263.537X H65, H8 5263.537X H67, H8 WCB 1.619 5262.235X H65, H8 5262.235X H67, H8 CF8M 1.448 5264.245X H65, H8 5264.245X H67, H8 WC6 1.7357 5267.239X H65, H8 5267.239X H67, H8 LCB 5263.543X H65, H8 5263.543X H67, H8 WCB 1.619 5262.582X H65, H8 5262.582X H67, H8 CF8M 1.448 5264.589X H65, H8 5264.589X H67, H8 WC6 1.7357 5267.585X H65, H8 5267.585X H67, H8 LCB 5263.548X H65, H8 5263.548X H67, H8 WCB 1.619 5262.592X H65, H8 5262.592X H67, H8 CF8M 1.448 5264.599X H65, H8 5264.599X H67, H8 WC6 1.7357 5267.595X H65, H8 5267.595X H67, H8 LCB 5263.552X H65, H8 5263.552X H67, H8 WCB 1.619 5262.647X S1 5262.647X S1 CF8M 1.448 5264.655X S1 5264.655X S1 WC6 1.7357 5267.65X S1 5267.65X S1 LCB 5263.556X S1 5263.556X S1 WCB 1.619 5262.658X S1 5262.658X S1 CF8M 1.448 5264.663X S1 5264.663X S1 WC6 1.7357 5267.66X S1 5267.66X S1 LCB 5263.56X S1 5263.56X S1 WCB 1.619 5262.667X S1 5262.667X S1 CF8M 1.448 5264.673X S1 5264.673X S1 WC6 1.7357 5267.67X S1 5267.67X S1 LCB 5263.564X S1 5263.564X S1 WCB 1.619 5262.676X S1 CF8M 1.448 5264.679X S1 WC6 1.7357 5267.677X S1 LCB 5263.567X S1 1/74 LWN 48.1-E

Orifice 9 x 3 15 x 3 25 x 3 Art.-No. Option code Art.-No. Option code Art.-No. Option code Type 526 D D E E Outlet flange rating class 3 is standard flange rating class acc. to API standard 526 F G H J K L 5262.147X 5264.157X 5267.151X Class 15 x 3 5263.528X 5262.166X H68, H8 5264.2X H68, H8 5267.17X H68, H8 5263.533X H68, H8 5262.24X H68, H8 5264.213X H68, H8 5267.29X H68, H8 5263.537X H68, H8 Welded outlet flange rating class 3 available on request. M N P Q R T Design details Orifice D and E: 1 D 2 and 1 E 2 class 3 x 3 and 6 x 3 are realised by a modification of Type 458 DN 25 / 1". Orifice L: 4 L 6 class 9 x 3 and 15 x 3 can be realised by a welded outlet flange on request. Orifice M-P: 4 M 6, 4 N 6 and 4 P 6 class 9 x 3 can be realised by a welded outlet flange on request. Orifice P-T: 4 P 6 up to 8 T 1 are realised by a welded outlet flange class 3. Center to face dimensions: The center to face dimensions a and b for LESER Type 526 with outlet flange rating class 3 are not specified in API Standard 526. The actual dimensions are listed in the table. They differ from the dimensions which are specified in API 526 for safety valves with outlet flange class 15. Exceptions are the grey marked safety valves. Grey marked safety valves The center to face dimensions are equal to API standard 526 with outlet flange rating class 15. LWN 48.1-E 1/75

Spare parts Disc (Item 7) Metal to metal seat Type 526 Disc (Item 7) Metal to metal seat Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: WCB 1.619, LCB, WC6 1.7357 Material-No. D 225.439.9 225.439.9 225.439.9 225.439.9 225.539.9 225.539.9 225.639.9 E Hardened 225.439.9 225.439.9 225.439.9 225.439.9 225.539.9 225.539.9 225.639.9 stainless steel F 225.739.9 225.739.9 225.739.9 225.739.9 225.739.9 225.739.9 225.839.9 1.4122 G 225.1139.9 225.1139.9 225.1139.9 225.1139.9 225.1139.9 225.1439.9 225.1439.9 Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H Hardened 225.1539.9 225.1539.9 225.1639.9 225.1639.9 225.1639.9 225.1639.9 J stainless steel 225.1839.9 225.1839.9 225.1939.9 225.1939.9 225.1939.9 225.1939.9 K 1.4122 225.2139.9 225.2139.9 225.2139.9 225.2139.9 225.2139.9 225.2139.9 Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 225.2539.9 225.2539.9 225.2639.9 225.2639.9 225.2639.9 225.2639.9 M 225.2939.9 225.2939.9 225.2939.9 225.2939.9 225.2939.9 N Hardened 225.3239.9 225.3239.9 225.3239.9 225.3239.9 225.3239.9 P stainless steel 225.3439.9 225.3439.9 225.3539.9 225.3539.9 225.3539.9 Q 1.4122 225.3639.9 225.3639.9 225.3639.9 225.3639.9 R 225.3739.9 225.3739.9 225.3839.9 225.3839.9 T 225.3969.9 225.3969.9 225.3969.9 Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: CF8M 1.448 Material-No. D 225.469.9 225.469.9 225.469.9 225.469.9 225.569.9 225.569.9 225.669.9 E 316L stellited 225.469.9 225.469.9 225.469.9 225.469.9 225.569.9 225.569.9 225.669.9 F 1.444 stellited 225.769.9 225.769.9 225.769.9 225.769.9 225.769.9 225.769.9 225.869.9 G 225.1169.9 225.1169.9 225.1169.9 225.1169.9 225.1169.9 225.1469.9 225.1469.9 Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 225.1569.9 225.1569.9 225.1669.9 225.1669.9 225.1669.9 225.1669.9 316L stellited J 225.1869.9 225.1869.9 225.1969.9 225.1969.9 225.1969.9 225.1969.9 1.444 stellited K 225.2169.9 225.2169.9 225.2169.9 225.2169.9 225.2169.9 225.2169.9 Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 225.2569.9 225.2569.9 225.2669.9 225.2669.9 225.2669.9 M 225.2969.9 225.2969.9 225.2969.9 225.2969.9 N 225.3269.9 225.3269.9 225.3269.9 225.3269.9 P 316L stellited 1.444 stellited 225.3469.9 225.3469.9 225.3569.9 225.3569.9 Q 225.3669.9 225.3669.9 225.3669.9 225.3669.9 R 225.3769.9 225.3769.9 225.3869.9 225.3869.9 T 225.3869.9 225.3869.9 225.3869.9 1/76 LWN 48.1-E

Spare parts Disc (Item 7) Soft seal and O-ring (Item 7.4) Soft seal Disc (Item 7) Soft seal: Material 316L 1.444 Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D 25.149.9X1 25.149.9X1 25.149.9X1 25.149.9X1 25.249.9X1 25.249.9X1 25.249.9X1 E 25.149.9X1 25.149.9X1 25.149.9X1 25.149.9X1 25.249.9X1 25.249.9X1 25.249.9X1 all F 25.349.9X1 25.349.9X1 25.349.9X1 25.349.9X1 25.349.9X1 25.349.9X1 25.349.9X1 G 25.649.9X1 25.649.9X1 25.649.9X1 25.649.9X1 25.649.9X1 25.649.9X1 25.649.9X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 25.849.9X1 25.849.9X1 25.949.9X1 25.949.9X1 25.149.9X1 25.149.9X1 J all 25.1149.9X1 25.1149.9X1 25.1249.9X1 25.1249.9X1 25.1249.9X1 25.1249.9X1 K 25.1349.9X1 25.1349.9X1 25.1349.9X1 25.1349.9X1 25.1349.9X1 25.1349.9X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 25.1649.9X1 25.1649.9X2 25.1749.9X3 25.1749.9X1 25.1749.9X1 25.1749.9X1 M 25.1949.9X1 25.1949.9X1 25.1949.9X1 25.1949.9X1 25.1949.9X1 N 25.2149.9X1 25.2149.9X1 25.2149.9X1 25.2149.9X1 25.2149.9X1 P all 25.2349.9X1 25.2349.9X1 25.2449.9X1 25.2449.9X1 25.2449.9X1 Q 25.2549.9X1 25.2549.9X1 25.2549.9X1 25.2549.9X1 R 25.2649.9X1 25.2649.9X1 25.2649.9X1 25.2649.9X1 T 25.2849.9X1 25.2849.9X1 25.2849.9X1 Type 526 O-ring (Item 7.4) Soft seal Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D 52.171.26X1 52.171.26X1 52.171.26X1 52.171.26X1 52.171.26X1 52.171.26X1 52.171.26X1 E 52.171.26X1 52.171.26X1 52.171.26X1 52.171.26X1 52.171.26X1 52.171.26X1 52.171.26X1 all F 52.22.26X1 52.22.26X1 52.22.26X1 52.22.26X1 52.22.26X1 52.22.26X1 52.22.26X1 G 52.249.35X1 52.249.35X1 52.249.35X1 52.249.35X1 52.249.35X1 52.249.35X1 52.249.35X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 52.313.35X1 52.313.35X1 52.313.35X1 52.313.35X1 52.313.35X1 52.313.35X1 J all 52.48.35X1 52.48.35X1 52.48.35X1 52.48.35X1 52.48.35X1 52.48.35X1 K 52.472.35X1 52.472.35X1 52.472.35X1 52.472.35X1 52.472.35X1 52.472.35X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 52.567.35X1 52.567.35X1 52.567.35X1 52.567.35X1 52.567.35X1 52.567.35X1 M 52.628.35X1 52.628.35X1 52.628.35X1 52.628.35X1 52.628.35X1 N 52.692.53X1 52.692.53X1 52.692.53X1 52.692.53X1 52.692.53X1 P all 52.85.35X1 52.85.35X1 52.85.35X1 52.85.35X1 52.85.35X1 Q 52.114.53X1 52.114.53X1 52.114.53X1 52.114.53X1 R 52.1327.35X1 52.1327.35X1 52.1327.35X1 52.1327.35X1 T 52.1644.35X1 52.1644.35X1 52.1644.35X1 O-ring material code: D (EPDM) X: 4 K (CR) X: 5 L (FPM) X: 7 C (FFKM) X: 9 Durometer: 7 75 IHRD LWN 48.1-E 1/77

Spare parts Nozzle (Item 5) Type 526 Nozzle (Item 5) Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: WCB 1.619, LCB, WC6 1.7357 Material-No. D 27.249.9 27.249.9 27.269.9 27.269.9 27.2269.9 27.2269.9 27.2769.9 E 316L 27.249.9 27.249.9 27.269.9 27.269.9 27.2269.9 27.2269.9 27.2769.9 F 1.444 27.2349.9 27.2349.9 27.2369.9 27.2369.9 27.2369.9 27.2369.9 27.2869.9 G 27.2449.9 27.2449.9 27.2469.9 27.2469.9 27.2469.9 27.3269.9 27.3269.9 Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 27.2549.9 27.2549.9 27.2969.9 27.3169.9 27.3169.9 27.3169.9 316L J 27.349.9 27.349.9 27.3569.9 27.3569.9 27.3569.9 27.3569.9 1.444 K 27.3349.9 27.3349.9 27.3369.9 27.3669.9 27.4169.9 27.4269.9 Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 27.3449.9 27.3449.9 27.3769.9 27.3769.9 27.4369.9 27.4369.9 M 27.3869.9 27.3869.9 27.3869.9 27.3869.9 27.4469.9 N 27.469.9 27.469.9 27.469.9 27.469.9 27.469.9 P 316L 1.444 27.4569.9 27.4569.9 27.4669.9 27.4669.9 27.4669.9 Q 27.4769.9 27.4769.9 27.4769.9 27.4769.9 R 27.4869.9 27.4869.9 27.5769.9 27.5769.9 T 27.5969.9 27.5969.9 27.5969.9 Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: CF8M 1.448 Material-No. D 27.249.9 27.249.9 27.249.9 27.249.9 27.2269.9 27.2269.9 27.2769.9 E 316L 27.249.9 27.249.9 27.249.9 27.249.9 27.2269.9 27.2269.9 27.2769.9 F 1.444 27.2349.9 27.2349.9 27.2349.9 27.2349.9 27.2369.9 27.2369.9 27.2869.9 G 27.2449.9 27.2449.9 27.2449.9 27.2449.9 27.2469.9 27.3269.9 27.3269.9 Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 27.2549.9 27.2549.9 27.2949.9 27.3169.9 27.3169.9 27.3169.9 316L J 27.349.9 27.349.9 27.3569.9 27.3569.9 27.3569.9 27.3569.9 1.444 K 27.3349.9 27.3349.9 27.3349.9 27.3669.9 27.4169.9 27.4269.9 Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 27.3449.9 27.3449.9 27.3769.9 27.3769.9 27.4369.9 M 27.3869.9 27.3869.9 27.3869.9 27.3869.9 N 27.469.9 27.469.9 27.469.9 27.469.9 P 316L 1.444 27.4569.9 27.4569.9 27.4669.9 27.4669.9 Q 27.4769.9 27.4769.9 27.4769.9 27.4769.9 R 27.4869.9 27.4869.9 27.5769.9 27.5769.9 T 27.5969.9 27.5969.9 27.5969.9 Nozzle design code: Class Standard Ring Joint Facing 3 6.959 9.9.956 15.96 25.964 Other special nozzle designs please specify in writing Material code: 27.YYXY.9 X: 4 not stellited X: 6 stellited 1/78 LWN 48.1-E

Spare parts Stainless steel bellows (Item 15) and bellows conversion kits Bellows (Item 15) Material 316Ti 1.4571 Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D 4.8349.21 4.8349.21 4.8349.21 4.8349. 4.8349. 4.8349. 4.8349. E 4.8649.21 4.8649.21 4.8349.21 4.8349. 4.8349. 4.8349. 4.8349. all F 4.8449.21 4.8449.21 4.8349.21 4.8449. 4.8449. 4.8449. 4.8449. G 4.8549.21 4.8549.21 4.8549.21 4.8549. 4.8549. 4.8549. 4.8549. Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 4.8549.21 4.8549.21 4.8749. 4.8749. 4.8749. 4.8749. J all 4.8849. 4.8849. 4.8849. 4.8849. 4.8849. 4.8849. K 4.8949.21 4.8949.21 4.8949.21 4.8949. 4.8949. 4.8949. Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 4.949. 4.949. 4.9149. 4.9149. 4.9149. 4.9149. M 4.9249.21 4.9249.21 4.9249.21 4.9249. 4.9249. N 4.9349.21 4.9349.21 4.9349.21 4.9349. 4.9349. P all 4.9449. 4.9449. 4.9549. 4.9549. 4.9549. Q 4.9649. 4.9649. 4.9649. 4.9649. R 4.9749.21 4.9749.21 4.9749. 4.9749. T 4.9849. 4.9849. 4.9849. Type 526 Bellows conversion kits Orifice Body material Art.-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D 521.134 521.134 521.134 521.1341 521.1342 521.1342 521.1343 E 521.134 521.134 521.134 521.1341 521.1342 521.1342 521.1343 all F 521.1344 521.1344 521.1344 521.1345 521.1346 521.1346 521.1346 G 521.135 521.135 521.135 521.1351 521.1352 521.1353 521.1353 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 521.1354 521.1354 521.1355 521.1355 521.1355 521.1355 J all 521.1356 521.1356 521.1357 521.1357 521.1357 521.1357 K 521.136 521.136 521.136 521.1361 521.1362 521.1362 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 521.1363 521.1363 521.1364 521.1364 521.1364 521.1364 M 521.1365 521.1365 521.1365 521.1366 521.1366 N 521.137 521.137 521.137 521.1371 521.1371 P all 521.1372 521.1372 521.1373 521.1373 521.1373 Q 521.1374 521.1374 521.1374 521.1374 R 521.1375 521.1375 521.1376 521.1376 T 521.1377 521.1377 521.1377 A conversion kit contains the following components: Item Component No. Item Component No. 8 Guide 1 11 Bonnet spacer / Cooling spool 1 12 Spindle 1 15 Bellows 1 6 Gasket 2, 3 depends on valve size Installation instruction LWN 37.5 1 55 Stud 4, 8, 12 depends on valve size LWN 48.1-E 1/79

Spare parts Ball (Item 57 / Item 61) Type 526 Orifice D E F G Orifice H J K Orifice L M N P Q R T Ball (Item 57) Material 316 1.441 Body material all Body material all Body material all Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Ø 3 mm 51.64. / 12 pieces Ø 3 mm 51.64. 12 pieces Ø 3 mm 51.64. 15 pieces Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 Ø 3 mm 51.64. 15 pieces Ball (Item 61) Material 316 1.441 Orifice D E F G Orifice H J K Orifice L M N P Q R T Body material all Body material all Body material all Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Material-No. Ø 9 mm 51.24. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 Ø 9 mm / 51.24. Ø 15 mm 51.44. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 Ø 15 mm 51.44. 1/8 LWN 48.1-E

Spare parts Gasket Body / bonnet (Item 6), Split ring (Item 14) Gasket (Item 6) Material Graphite / 316, Graphite / 1.441 Orifice D Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Material-No. 5.87. 5.87. 5.87. 5.87. 5.127. 5.127. 5.127. E 5.87. 5.87. 5.87. 5.87. 5.127. 5.127. 5.127. all F 5.127. 5.127. 5.127. 5.127. 5.127. 5.127. 5.127. G 5.127. 5.127. 5.127. 5.127. 5.127. 5.167. 5.167. Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 5.127. 5.127. 5.167. 5.167. 5.167. 5.167. J all 5.167. 5.167. 5.197. 5.197. 5.197. 5.197. K Orifice 5.197. 5.197. 5.197. 5.197. WC6 5.197. Body material Flange rating class Other: 5.217. 25.1349.9X1 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 5.197. 5.197. 5.217. 5.217. 5.217. 5.217. M 5.217. 5.217. 5.217. 5.217. 5.217. N 5.217. 5.217. 5.217. 5.217. 5.217. P all 5.217. 5.217. 5.227. 5.227. 5.227. Q 5.227. 5.227. 5.227. 5.227. R 5.227. 5.227. 5.287. 5.287. T 5.287. 5.287. 5.287. Type 526 Split Ring (Item 14) Material 316L 1.444 Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D 251.249. 251.249. 251.249. 251.249. 251.249. 251.249. 251.249. E 251.249. 251.249. 251.249. 251.249. 251.249. 251.249. 251.249. all F 251.249. 251.249. 251.249. 251.249. 251.249. 251.249. 251.249. G 251.249. 251.249. 251.249. 251.249. 251.249. 251.349. 251.349. Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 251.249. 251.249. 251.349. 251.349. 251.349. 251.349. J all 251.349. 251.449. 251.449. 251.449. 251.449. 251.449. K 251.449. 251.449. 251.449. 251.449. 251.449. 251.449. Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 251.449. 251.449. 251.449. 251.449. 251.449. 251.449. M 251.449. 251.449. 251.449. 251.449. 251.449. N 251.449. 251.449. 251.449. 251.449. 251.449. P all 251.449. 251.449. 251.549. 251.549. 251.549. Q 251.549. 251.549. 251.549. 251.549. R 251.549. 251.549. 251.1949. 251.1949. T 251.1949. 251.1949. 251.1949. LWN 48.1-E 1/81

Axial needle bearing (Item 69) Type 526 Axial needle bearing (Item 69) Material 316 1.441 Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D 25.749. 25.749. 25.749. 25.749. 25.749. 25.749. 25.749. E 25.749. 25.749. 25.749. 25.749. 25.749. 25.749. 25.749. all F 25.749. 25.749. 25.749. 25.749. 25.749. 25.749. 25.749. G 25.749. 25.749. 25.749. 25.749. 25.749. 25.849. 25.849. Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 3 H 25.749. 25.749. 25.849. 25.849. 25.849. 25.849. J all 25.849. 25.849. 25.949. 25.949. 25.949. 25.949. K 25.949. 25.949. 25.949. 25.949. 25.949. 25.949. Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 15 x 15 L 25.949. 25.949. 25.949. 25.949. 25.949. 25.949. M 25.949. 25.949. 25.949. 25.949. 25.949. N 25.949. 25.949. 25.949. 25.949. 25.949. P all 25.949. 25.949. 25.149. 25.149. 25.149. Q 25.149. 25.149. 25.149. 25.149. R 25.149. 25.149. 25.149. 25.149. T 25.149. 25.149. 25.149. 1/82 LWN 48.1-E

Spare parts recommendations The following recommendations for spare parts should be taken as a guideline. The actual needs for the replacement of parts depend on various conditions like operating temperature and operating pressure fluid environment material selection Type 526 These operating conditions have a significant influence on the product life of safety relief valves. Item Component Commision / start-up Two year operating Fife year operating 6 Gasket 1 per valve 1 per valve 2 per valve 7 Disc 1 per 5 valves 2 per 5 valves 1 per valve 61 Ball 1 per 5 valves 2 per 5 valves 1 per valve 57 Ball 1 set per 5 valves 1) 2 sets per 5 valves 1) 1 set per valve 1) 5 Nozzle 1 per 5 valves 15 Stainless steel bellows 1 per 5 valves 2 per 5 valves 1 per valve 12 Spindle 1 per 5 valves 1 per valve: per each supplied safety valve one piece shall be provided 1 per 5 valves: one spare part per 5 supplied equal safety valves 1) 1 set = 15 pieces Rework of seat and disc Minor damages on the seating surfaces of nozzle and disc can be repaired by lapping or by machining and successive lapping. For this purpose LESER offers lapping stamps as well as lapping paste. Lapping stamps Orifice Designation and size Material-No. D + E Lapping stamp no. 3, d 18 / orifice D + E 445.1359. F + G Lapping stamp no. 4, d 23 / orifice F + G 445.1459. H Lapping stamp no. 5, d 29 / orifice H 445.1559. J Lapping stamp no. 6, d 37 / orifice J 445.1659. K Lapping stamp no. 7, d 46 / orifice K 445.1759. L + M Lapping stamp no. 8, d 6 / orifice L + M 445.1859. N Lapping stamp no. 9, d 74 / orifice N 445.1959. P Lapping stamp no. 1, d 92 / orifice P 445.259. Q + R Lapping stamp no. 12, d 125 / orifice Q + R 445.2259. T Lapping stamp no. 13, d 165 / orifice T 445.2359. Lapping paste Lapping paste Supplying-lot Designation Application Tetraboron paste WL F 8 Tetraboron paste WL F 12 Tubes to 1 g net F grinding-paste 8 Primary lapping Tubes to 1 g net F grinding-paste 12 Finishing LWN 48.1-E 1/83

Available Options For further information refer to Accessories and Options, page 99/1 Type 526 Butt-weld connection Heating jacket O-ring disc Disc with inserted sealing plate J2: FFKM C J44: PTFE-FDA A J21: CR K J48: PCTFE G J22: EPDM F J49: SP T J23: FKM L Open bonnet See Art.-No. Stainless steel bellows J68: Open bonnet J78: Closed bonnet J88: High temperature equipment Conversion kit for stainless steel bellows See Art.-No. page 1/79 Screwed cap H2 H2 Plain lever H3 H3 Packed lever H4 H4 Bolted cap H1 H1 Bolted lifting device H6 H6 Test gag J69: H4 J7: H2 Lift indicator J39: Adaptor for lift indicator H4 J93: Lift indicator O-ring-damper H2 J65 O-ring-damper H4 J66 1/84 LWN 48.1-E

Approvals Approvals Orifice D E T Europe Coefficient of discharge K dr DIN EN ISO 4126-1 Approval No. 7 22 1111Z12/2/26 S/G,455,81 L,343,579 Germany Coefficient of discharge α w AD 2-Merkblatt A2 Approval No. TÜV SV 182 United States S/G,455,81 L,343,579 Coefficient of discharge K ASME Sec. VIII Approval No. M37246 M37224 Canada S/G Rated slope acc. to ASME VIII, Div. 1 UG-131 (d) (2) G: 1,99 SCFM/psia,81 S: 5,59 PPH/psia Approval No. M37257 M37235 L Rated slope acc. to ASME VIII, Div. 1 UG-131 (d) (2),579 3,11 GPM/ psid Coefficient of discharge K Canada: CRN Approval No. OG873.9C China CSBQTS S/G L Approval No. Rated slope acc. to ASME VIII, Div. 1 UG-131 (d) (2) G: 1,99 SCFM/psia S: 5,59 PPH/psia,81 Rated slope acc. to ASME VIII, Div. 1 UG-131 (d) (2),579 3,11 GPM/ psid Coefficient of discharge α w S/G,455,81 L,343,579 Russia Coefficient of discharge α w GGTN/ Approval No. PPC -18458 GOSGOTECHNADZOR S/G,455,81 GOST R L,343,579 Classification societies Homepage Bureau Veritas BV www.bureauveritas.com The valid certification number is changed with Det Norske Veritas DNV www.dnv.com every renewal. Germanischer Lloyd GL www.gl-group.com Lloyd s register EMEA LREMEA www.lr.org Registro Italiano Navale RINA www.rina.org A sample certificate including the valid certification number can be taken from the homepage of the classification societies. Type 526 LWN 48.1-E 1/85

Capacities Steam Type 526 Capacities for saturated steam according to AD 2-Merkblatt A2, based on plus 1 % overpressure. Capacities at 1 bar (14,5 psig) and below are based on,1 bar (1,45 psig) overpressure. Metric Units AD 2-Merkblatt A2 [kg/h] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [mm] 14 14 18 22,5 28,3 36 43 53,5 6,3 66 8 15,5 126,5 161,5 Act. Orifice area A [mm 2 ] 154 154 254 398 629 118 1452 2248 2856 3421 527 8742 12568 2485 LEOS/G* ) [inch 2 ],111,196,324,56,81 1,296 1,849 2,863 3,637 4,357 6,41 11,132 16,4 26,85 Set pressure [bar] Capacities [kg/h],2 19 54 89 139 221 357 59 788 11 1199 1762 365 4372 7182,5 42 9 149 232 367 595 848 1313 1668 1999 2937 517 7285 11968 1 71 134 221 345 546 883 126 1951 2479 2969 4363 7587 1823 1778 2 12 217 359 561 888 1437 25 3174 432 483 796 12341 1763 2892 3 166 296 489 764 129 1956 2791 432 5488 6575 966 16799 23962 39366 4 28 369 61 953 157 2439 348 5387 6843 8198 1245 2948 29879 4988 5 248 442 73 1141 185 292 4166 6449 8193 9815 1442 2578 3577 58766 6 289 514 85 1328 211 3399 485 758 9537 11426 16787 29194 41642 68413 7 329 585 967 1511 239 3867 5517 854 1849 12997 1996 3321 47371 77824 8 369 657 186 1697 2684 4343 6196 9592 12185 14597 21447 37299 5322 8744 9 41 729 125 1882 2978 4818 6874 1642 13519 16195 23795 41382 5926 96973 1 45 81 1323 268 3271 5293 7552 11691 14852 17792 26141 45461 64845 16532 12 531 872 1561 2439 3858 6243 897 13788 17515 2983 3829 53615 76475 125639 14 61 944 1793 282 4432 7172 1233 15841 2123 2417 35419 61598 87862 144347 16 691 185 23 3172 518 812 11584 17933 22781 27291 497 69733 99467 163411 18 771 1228 2267 3542 564 968 12938 227 25442 3479 44781 77879 11185 182499 2 852 1371 255 3913 6191 118 14293 22125 2817 33672 49473 8638 122723 21618 22 931 1515 2735 4273 676 194 1568 24161 3693 3677 5424 93952 24 112 1654 2973 4645 7349 11891 16965 26262 33363 39968 58723 12125 26 193 1798 3211 518 7938 12845 18327 28369 3639 43175 63434 11318 28 1174 1943 3451 5392 8529 1382 19692 3483 38724 46391 68159 118536 3 1256 287 3691 5766 9122 14762 2161 3262 41417 49617 72899 126779 32 1338 2233 3931 6143 9718 15725 22435 34729 44118 52853 77654 13548 34 1416 2378 4161 652 1286 16644 23747 3676 46698 55944 82195 142945 36 1498 2517 443 6879 1883 17611 25126 38895 49411 59194 8697 15125 38 1581 2663 4646 7259 11483 18582 26511 4139 52134 62457 91764 159586 4 1664 281 4889 7639 1285 19557 2791 43191 54868 65732 96576 167955 5 283 2958 6123 9567 15134 2449 3494 5488 68711 82315 12941 6 256 374 7364 1156 1823 29456 4225 6555 82643 996 145463 7 2945 4455 8656 13525 21396 34624 49398 76467 97141 8 3388 5236 9957 15558 24613 39828 56823 87962 9 3854 623 11326 17697 27997 4535 64636 156 1 4324 6852 1278 19856 31413 5832 72522 112264 12 5349 7688 1572 24562 38858 6288 8971 14 655 951 19117 2987 47255 76468 1996 16 7842 11565 2345 368 56965 9218 18 9527 13941 27996 43744 6923 111985 2 11793 16936 34657 54151 * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /7 How to use capacity-sheets refer to page /5 1/86 LWN 48.1-E

Capacities Steam Capacities for saturated steam according to ASME Section VIII (UV), based on plus 1% overpressure. Capacities at 2,7 bar (3 psig) and below are based on,27 bar (3 psig) overpressure. US Units ASME Section VIII [lb/h] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [inch],551,551,79,886 1,11 1,42 1,69 2,11 2,37 2,6 3,15 4,15 4,98 6,36 Act. Orifice area A [inch 2 ],239,239,394,616,975 1,58 2,25 3,48 4,43 5,3 7,79 13,55 19,48 31,75 LEOS/G* ) [inch 2 ],111,196,324,56,81 1,296 1,849 2,863 3,637 4,357 6,41 11,132 16,4 26,85 Set pressure [psig] Capacities [lb/h] 15 183 321 531 83 1313 1981 332 4694 5963 7144 1496 18253 2636 42774 2 211 371 613 957 1515 2415 3497 5413 6876 8237 1213 2148 322 49323 3 266 469 775 1212 1917 3239 4425 685 872 1425 15317 26637 37995 62421 4 328 577 954 1491 2359 41 5446 8431 1711 12831 18852 32786 46765 76829 5 389 686 1133 1771 282 4788 6468 112 12719 15237 22387 38934 55535 91237 6 451 794 1312 251 3244 552 7489 11593 14728 17644 25923 4582 6435 15644 7 512 92 1491 233 3686 6251 8511 13174 16736 25 29458 51231 7375 1252 8 574 11 167 261 4129 698 9532 14756 18745 22456 32994 57379 81845 13446 9 635 1119 1849 2889 4571 7686 1553 16337 2753 24862 36529 63527 9614 148868 1 697 1227 228 3169 514 8411 11575 17918 22762 27269 464 69676 99384 163276 12 82 1444 2386 3728 5898 9857 13618 218 26779 3281 47135 81973 116924 19292 14 943 166 2744 4288 6783 1131 1566 24242 3796 36894 5426 94269 134464 2297 16 166 1877 312 4847 7668 12744 1773 2744 34814 4176 61276 16566 1524 249723 18 1189 293 346 546 8553 14147 19746 3567 38831 46519 68347 118863 169544 278539 2 1312 231 3818 5966 9438 15585 21789 33729 42848 51331 75418 131159 18784 37355 22 1435 2526 4176 6525 1323 1724 23831 36891 46865 56144 82489 143456 24623 33617 24 1558 2743 4534 784 1127 18464 25874 453 5882 6956 89559 155753 222163 364986 26 1681 2959 4892 7644 1292 1995 27917 43216 54899 65769 9663 1685 23973 39382 28 184 3176 525 823 12977 21347 2996 46378 58917 7581 1371 18346 257243 422618 3 1927 3392 568 8762 13862 22792 323 4954 62934 75394 11772 192643 274783 451433 32 25 369 5966 9322 14747 24172 3445 5272 66951 826 117842 2494 34 2173 3825 6324 9881 15632 25617 3688 55864 7968 8519 124913 217237 36 2296 442 6682 144 16516 2765 38131 5927 74985 89832 131984 229533 38 2419 4259 74 1999 1741 28515 4174 62189 792 94644 13955 24183 4 2542 4475 7398 11559 18286 29969 42217 65351 832 99457 146125 254127 42 2665 4692 7756 12118 19171 31425 44259 68513 8737 14269 153196 266424 44 2788 498 8114 12677 256 32884 4632 71676 9154 1982 16267 27872 46 2911 5125 8471 13237 294 34347 48345 74838 9571 113894 167338 29117 48 334 5341 8829 13796 21825 35814 5388 78 9988 11877 17448 33314 5 3157 5558 9187 14355 2271 37179 5243 81162 1315 123519 181479 31561 6 3772 6641 1977 17152 27134 44566 62644 96973 123191 147582 216833 37794 7 4387 7723 12767 19948 31558 5257 72858 112784 143277 171644 252186 8 52 886 14557 22745 35983 59498 8372 128596 163363 19577 28754 9 5617 9889 16347 25541 447 67216 93286 14447 183449 21977 322894 1 6232 1971 18136 28338 44831 7576 135 16218 23534 243832 358248 11 6847 1254 19926 31134 49255 82854 113714 17629 22362 12 7462 13137 21716 33931 53679 9118 123928 19184 13 877 14219 2356 36728 5813 99369 134142 27651 14 868 15281 2526 39469 62439 17926 144153 223148 15 9352 16463 27215 42523 67272 116375 15531 2442 2 1293 22763 37628 58794 9313 16476 214738 25 17111 3123 49795 7785 12388 227979 Type 526 * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /7 How to use capacity-sheets refer to page /5 LWN 48.1-E 1/87

Capacities Air Capacities for air according to AD 2-Merkblatt A2, based on plus 1 % overpressure at C and 113 mbar. Capacities at 1 bar (14,5 psig) and below are based on,1 bar (1,45 psig) overpressure. Type 526 Metric Units AD 2-Merkblatt A2 [m 3 n /h] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [mm] 14 14 18 22,5 28,3 36 43 53,5 6,3 66 8 15,5 126,5 161,5 Act. Orifice area A [mm 2 ] 154 154 254 398 629 118 1452 2248 2856 3421 527 8742 12568 2485 LEOS/G* ) [inch 2 ],111,196,324,56,81 1,296 1,849 2,863 3,637 4,357 6,41 11,132 16,4 26,85 Set pressure [bar] Capacities [m 3 n /h],2 22 63 13 161 255 413 59 913 1159 1389 241 3549 562 8317,5 5 16 175 273 432 16,4 23,5 36,3 46,1 55,3 81,2 5999 8557 1458 1 84 159 263 411 651 23,3 33,2 51,4 65,3 78,2 52 944 129 21192 2 145 262 434 678 172 31,5 44,9 69,6 88,4 5833 857 1495 2126 34927 3 23 361 597 934 1477 44,5 63,5 98,4 675 833 1182 2525 29277 4898 4 255 454 75 1172 1854 54,5 77,8 6625 8417 183 14814 25764 36749 6374 5 37 546 92 141 2231 63 89,9 7973 1128 12133 17827 312 44221 7265 6 359 638 155 1648 268 7,4 62 932 11839 14183 2839 36241 51693 84925 7 411 73 127 1887 2985 77,1 6891 1667 13551 16234 23851 41479 59165 9721 8 463 823 136 2125 3362 83,3 7761 1214 15262 18284 26863 46718 66637 19477 9 515 915 1512 2363 3739 89,1 8631 13361 16973 2334 29875 51956 7419 121752 1 567 17 1665 261 4116 94,5 951 1478 18685 22384 32887 57195 81581 13428 12 67 199 197 378 4869 99,6 11242 1742 2217 26484 38912 67672 96526 158579 14 774 1192 2275 3555 5623 91 12982 297 2553 3585 44936 78149 11147 183131 16 878 1376 258 431 6377 132 14723 22791 28953 34685 5961 88626 126414 27682 18 982 1561 2885 458 7131 11539 16463 25485 32375 38785 56985 9912 141358 232233 2 185 1745 319 4984 7885 12759 1824 28179 35798 42886 639 19579 15632 256785 22 1189 193 3495 5461 8639 13979 19944 3874 39221 46986 6934 1256 24 1293 2114 38 5937 9393 15199 21685 33568 42643 5186 7558 13533 26 1397 2299 415 6414 1147 16419 23425 36262 4666 55187 8182 1411 28 151 2483 441 689 19 17639 25166 38956 49489 59287 8717 151487 3 164 2668 4715 7367 11654 18859 2696 41651 52911 63387 93131 161964 32 178 2852 52 7843 1248 279 28647 44345 56334 67488 99155 172441 34 1812 337 5325 832 13162 21299 3387 4739 59757 71588 1518 182918 36 1916 3221 563 8796 13916 22519 32128 49733 63179 75688 11124 193395 38 219 346 5935 9273 1467 23739 33868 52428 6662 79789 117228 23872 4 2123 359 624 9749 15424 24959 3568 55122 725 83889 123253 214349 5 2642 3775 7765 12132 19193 3158 44311 68593 87138 1439 153374 6 3161 4697 9289 14515 22963 37158 5313 8264 14251 124892 183496 7 368 562 1814 16898 26732 43258 61716 95536 121365 8 4199 6542 12339 1928 351 49357 7418 197 9 4718 7465 13864 21663 34271 55457 7912 122478 1 5237 8387 15389 2446 384 61557 87823 135949 12 6274 939 18439 28811 45579 73756 15227 14 7312 11154 21489 33576 53118 85955 122632 16 835 12999 24539 38342 6657 98155 18 9388 14844 27588 4317 68195 11354 2 1426 16689 3638 47872 22 11463 18534 33688 52638 24 1251 2379 36738 5743 26 13539 22224 39788 28 14577 2469 42838 3 15614 25914 45887 35 1829 27759 4 283 32371 * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /7 How to use capacity-sheets refer to page /5 1/88 LWN 48.1-E

Capacities Air Capacities for air according to ASME Section VIII (UV), based on plus 1 % overpressure at 16 C (6 F). Capacities at 2,7 bar (3 psig) and below are based on,27 bar(3 psig) overpressure. US Units ASME Section VIII [S.C.F.M.] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [inch],551,551,79,886 1,11 1,42 1,69 2,11 2,37 2,6 3,15 4,15 4,98 6,36 Act. Orifice area A [inch 2 ],239,239,394,616,975 1,58 2,25 3,48 4,43 5,3 7,79 13,55 19,48 31,75 LEOS/G* ) [inch 2 ],111,196,324,56,81 1,296 1,849 2,863 3,637 4,357 6,41 11,132 16,4 26,85 Set pressure [psig] Capacities [S.C.F.M.] 15 65, 115 189 296 468 757 18 1672 2124 2545 3739 652 9275 15237 2 75, 132 218 341 54 873 1246 1928 2449 2934 4311 7498 1695 1757 3 95, 167 276 431 683 115 1576 244 31 3714 5456 9489 13535 22236 4 117 26 34 531 84 136 194 33 3815 4571 6715 11679 16659 27368 5 139 245 43 631 998 1615 234 3566 453 5428 7975 13869 19783 3251 6 161 283 467 73 1156 187 2668 4129 5246 6285 9234 166 2297 37633 7 183 322 531 83 1313 2125 332 4692 5961 7142 1493 1825 2631 42765 8 25 361 594 929 1471 238 3396 5256 6677 8 11753 244 29155 47898 9 227 399 658 129 1628 2635 3759 5819 7392 8857 1312 2263 32279 533 1 249 438 722 1128 1786 2891 4123 6382 817 9714 14271 24821 3543 58163 12 293 515 849 1328 211 341 4851 758 9538 11428 1679 2921 41651 68428 14 336 592 976 1527 2416 3911 5579 8635 1969 13143 1939 33582 47899 78693 16 38 67 114 1726 2732 4421 636 9761 124 14857 21828 37962 54147 88957 18 424 747 1231 1925 347 4931 734 1887 13831 16571 24346 42343 6395 99222 2 468 824 1359 2124 3362 5441 7762 1214 15262 18286 26865 46723 66643 19487 22 512 91 1486 2323 3677 5951 849 1314 16693 2 29384 5114 72891 119752 24 556 979 1613 2522 3992 6462 9217 14266 18123 21715 3192 55484 79139 1317 26 6 156 1741 2722 438 6972 9945 15392 19554 23429 34421 59864 85388 14282 28 644 1133 1868 2921 4623 7482 1673 16519 2985 25143 3694 64245 91636 15547 3 688 121 1995 312 4938 7992 114 17645 22416 26858 39458 68625 97884 16811 32 731 1288 2123 3319 5253 852 12128 18771 23847 28572 41977 736 34 775 1365 225 3518 5568 912 12856 19898 25278 3286 44496 77386 36 819 1442 2378 3717 5884 9522 13584 2124 2678 321 4714 81767 38 863 1519 255 3916 6199 133 14311 2215 28139 33715 49533 86147 4 97 1597 2632 4116 6514 1543 1539 23277 2957 35429 5252 9528 42 951 1674 276 4315 6829 1153 15767 2443 311 37144 54571 9498 44 995 1751 2887 4514 7144 11563 16494 25529 32432 38858 5789 99289 46 139 1829 314 4713 746 1273 17222 26656 33863 4573 5968 13669 48 183 196 3142 4912 7775 12583 1795 27782 35294 42287 62127 185 5 1126 1983 3269 5111 89 1393 18678 2898 36724 441 64645 11243 6 1346 2369 396 617 9666 15644 22316 3454 43879 52573 77239 134333 7 1565 2756 4543 713 11242 18195 25955 4171 5133 61145 89832 8 1785 3142 518 898 12818 2745 29593 4583 58187 69717 12426 9 24 3528 5817 994 14394 23296 33232 51435 65341 78289 11519 1 2224 3915 6454 19 1597 25847 3687 5766 72496 8686 127613 11 2443 431 79 1185 17546 28398 459 62698 7965 12 2663 4687 7727 1281 19122 3948 44147 68329 13 2882 574 8364 1377 2698 33499 47786 73961 14 311 546 91 1473 22274 365 51424 79592 15 3321 5846 9638 1568 2385 386 5563 85224 2 4418 7778 12822 247 3173 51354 73256 113382 25 5515 971 167 2525 3961 6417 3 6613 11641 19191 34 35 771 13573 22375 34983 4 887 1554 2556 45 994 17436 28744 5 112 19368 31928 55 1299 21299 6 13196 23231 Type 526 * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /7 How to use capacity-sheets refer to page /5 LWN 48.1-E 1/89

Capacities Water Capacities for water according to AD 2-Merkblatt A2, based on plus 1 % overpressure at 2 C (68 F). Capacities at 1 bar (14,5 psig) and below are based on,1 bar (1,45 psig) overpressure. Type 526 Metric Units AD 2-Merkblatt A2 [1 3 kg/h] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [mm] 14 14 18 22,5 28,3 36 43 53,5 6,3 66 8 15,5 126,5 161,5 Act. Orifice area A [mm 2 ] 154 154 254 398 629 118 1452 2248 2856 3421 527 8742 12568 2485 LEOL* ) [inch 2 ],126,213,351,549,868 1,45 2,5 3,14 3,943 4,724 6,94 12,7 17,353 28,283 Set pressure [bar] Capacities [1 3 kg/h],2 1,37 2,49 4,11 6,42 1,2 16,4 23,5 36,3 46,1 55,3 81,2 141 21 331,5 1,94 3,52 5,81 9,9 14,4 23,3 33,2 51,4 65,3 78,2 115 2 285 468 1 2,63 4,76 7,87 12,3 19,5 31,5 44,9 69,6 88,4 16 156 27 386 634 2 3,72 6,74 11,1 17,4 27,5 44,5 63,5 98,4 125 15 22 383 546 896 3 4,55 8,25 13,6 21,3 33,7 54,5 77,8 12 153 183 269 468 668 198 4 5,26 9,53 15,7 24,6 38,9 63 89,9 139 177 212 311 541 772 1268 5 5,88 1,7 17,6 27,5 43,5 7,4 1 156 198 237 348 65 863 1417 6 6,44 11,7 19,3 3,1 47,7 77,1 11 17 216 259 381 663 945 1553 7 6,95 12,6 2,8 32,5 51,5 83,3 119 184 234 28 411 716 121 1677 8 7,43 13,5 22,3 34,8 55, 89,1 127 197 25 299 44 765 191 1793 9 7,88 14,3 23,6 36,9 58,4 94,5 135 29 265 318 467 811 1157 191 1 8,31 15,1 24,9 38,9 61,5 99,6 142 22 279 335 492 855 122 24 12 9,1 15,8 27,3 42,6 67,4 19 156 241 36 367 539 937 1336 2196 14 9,83 16,5 29,5 46, 72,8 118 168 26 331 396 582 112 1444 2372 16 1,5 17,8 31,5 49,2 77,8 126 18 278 353 423 622 182 1543 2535 18 11,1 19,1 33,4 52,2 82,6 134 191 295 375 449 66 1148 1637 2689 2 11,8 2,2 35,2 55, 87, 141 21 311 395 473 696 121 1725 2835 22 12,3 21,3 36,9 57,7 91,3 148 211 326 414 496 729 1269 24 12,9 22,3 38,6 6,3 95,3 154 22 341 433 519 762 1325 26 13,4 23,3 4,1 62,7 99,2 161 229 355 451 54 793 1379 28 13,9 24,3 41,7 65,1 13 167 238 368 468 56 823 1431 3 14,4 25,2 43,1 67,4 17 172 246 381 484 58 852 1481 32 14,9 26,1 44,5 69,6 11 178 254 393 5 599 88 153 34 15,3 26,9 45,9 71,7 113 184 262 46 515 617 97 1577 36 15,8 27,8 47,2 73,8 117 189 27 417 53 635 933 1623 38 16,2 28,6 48,5 75,8 12 194 277 429 545 653 959 1667 4 16,6 29,4 49,8 77,8 123 199 284 44 559 669 984 1711 5 18,6 3,1 55,7 87, 138 223 318 492 625 748 11 6 2,4 33,7 61, 95,3 151 244 348 539 684 82 125 7 22, 36,9 65,9 13 163 263 376 582 739 8 23,5 39,8 7,4 11 174 282 42 622 9 24,9 42,6 74,7 117 185 299 426 66 1 26,3 45,2 78,7 123 195 315 449 696 12 28,8 47,6 86,2 135 213 345 492 14 31,1 52,2 93,2 146 23 373 532 16 33,2 56,4 99,6 156 246 398 18 35,3 6,2 16 165 261 423 2 37,2 63,9 111 174 22 39, 67,4 117 182 24 4,7 7,6 122 191 26 42,4 73,8 127 28 44, 76,8 132 3 45,5 79,7 136 35 49,2 82,5 4 52,6 89,1 * ) LEO L = LESER Effective Orifice liquids please refer to page /8 How to use capacity-sheets refer to page /5 1/9 LWN 48.1-E

Capacities Water Capacities for water according to ASME Section VIII (UV), based on plus 1 % overpressure at 21 C (7 F). Capacities at 2,7 bar (3 psig) and below are based on,27 bar (3 psig) overpressure. US Units ASME Section VIII [US-G.P.M.] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [inch],551,551,79,886 1,11 1,42 1,69 2,11 2,37 2,6 3,15 4,15 4,98 6,36 Act. Orifice area A [inch 2 ],239,239,394,616,975 1,58 2,25 3,48 4,43 5,3 7,79 13,55 19,48 31,75 LEOL* ) [inch 2 ],126,213,351,549,868 1,45 2,5 3,14 3,943 4,724 6,94 12,7 17,353 28,283 Set pressure [psig] Capacities [US-G.P.M.] 15 13,2 22,3 36,7 57,4 9,9 147 21 325 413 494 726 1263 181 296 2 14,9 25,2 41,5 64,9 13 166 237 367 466 559 821 1428 236 3346 3 17,9 3,2 49,7 77,7 123 199 284 44 559 669 983 171 2439 47 4 2,6 34,8 57,4 89,8 142 23 328 58 645 773 1135 1975 2817 4627 5 23,1 38,9 64,2 1 159 257 367 568 721 864 1269 228 3149 5173 6 25,3 42,7 7,3 11 174 282 42 622 79 947 1391 2418 345 5667 7 27,3 46,1 76, 119 188 34 434 672 853 122 152 2612 3726 6121 8 29,2 49,3 81,2 127 21 325 464 718 912 193 166 2793 3983 6544 9 31, 52,2 86,1 135 213 345 492 762 968 1159 173 2962 4225 6941 1 32,6 55,1 9,8 142 225 364 519 83 12 1222 1795 3122 4453 7316 12 35,7 6,3 99,5 155 246 398 568 879 1117 1339 1967 342 4878 815 14 38,6 65,2 17 168 266 43 614 95 127 1446 2124 3694 5269 8657 16 41,3 69,7 115 18 284 46 656 115 129 1546 2271 3949 5633 9255 18 43,8 73,9 122 19 31 488 696 177 1368 1639 249 4189 5975 9816 2 46,1 77,9 128 21 318 514 734 1135 1442 1728 2539 4416 6298 1347 22 48,4 81,7 135 211 333 539 769 1191 1513 1812 2663 4631 665 1852 24 5,5 85,3 141 22 348 563 84 1244 158 1893 2781 4837 6899 11335 26 52,6 88,8 146 229 362 586 836 1294 1644 197 2895 534 7181 11797 28 54,6 92,2 152 238 376 68 868 1343 177 245 34 5224 7452 12243 3 56,5 95,4 157 246 389 63 898 139 1766 2116 319 548 7713 12672 32 58,4 98,5 162 254 42 65 928 1436 1824 2186 3211 5585 34 6,2 12 167 262 414 67 956 148 1881 2253 331 5757 36 61,9 14 172 269 426 69 984 1523 1935 2318 346 5924 38 63,6 17 177 277 438 79 111 1565 1988 2382 35 686 4 65,2 11 182 284 449 727 137 166 24 2444 359 6244 42 66,9 113 186 291 46 745 163 1645 29 254 3679 6399 44 68,4 116 19 298 471 763 188 1684 2139 2563 3766 6549 46 7, 118 195 34 482 78 1112 1722 2187 2621 385 6696 48 71,5 121 199 311 492 797 1136 1759 2234 2677 3933 684 5 72,9 123 23 317 52 813 116 1795 228 2732 414 6982 6 79,9 135 222 348 55 891 1271 1966 2498 2993 4397 7648 7 86,3 146 24 376 594 962 1372 2124 2698 3233 475 8 92,3 156 257 41 635 128 1467 2271 2885 3456 578 9 97,9 165 272 426 674 191 1556 248 36 3666 5386 1 13 174 287 449 71 115 164 2539 3225 3864 5677 11 18 183 31 471 745 126 172 2663 3382 12 113 191 314 492 778 126 1797 2781 13 118 199 327 512 81 1311 187 2895 14 122 26 34 531 841 136 1941 34 15 126 213 352 55 87 148 29 319 2 146 246 46 635 15 1626 232 359 25 163 275 454 71 1123 1818 3 179 32 497 777 35 193 326 537 84 4 26 348 574 45 219 369 69 5 231 389 642 55 242 48 6 253 427 Type 526 * ) LEO L = LESER Effective Orifice liquids please refer to page /8 How to use capacity-sheets refer to page /5 LWN 48.1-E 1/91

Type 526 Determination of coefficent of discharge in case of lift restriction or back pressure Diagram for evaluation of ratio of lift / flow diameter (h/d ) in reference to the coefficient of discharge (K dr /α w ) h = Lift [mm] d = Flow diameter [mm] of selected safety valve, refer to table article numbers h/d = Ratio of lift / flow diameter p a = Back pressure [bar a ] p = Set pressure [bar a ] p a/p = Ratio of back pressure / K dr = Coefficient of discharge acc. to DIN EN ISO 4126-1 α w = Coefficient of discharge acc. to AD 2-Merkblatt A2 K b = Back pressure correction factor acc. to API 52 topic 3.3 Steam and Gases Liquids,9 K dr = α w = f (h/d ),7 K dr = α w = f (h/d ),8,7 Orifice E-K "S/G",6 Orifice E-K "L",6,5 Coefficient of discharge K dr / αw,5 Orifice L-T "S/G" Orifice D "S/G",4,3,2,1,,,5,1,15,2,25,3,35,17,28,32 Ratio of lift / flow diameter h / d Coefficient of discharge K dr / αw,4 Orifice L-T "L" Orifice D "L",3,2,1,,,5,1,15,2,25,3,35,17,28,32 Ratio of lift / flow diameter h / d Diagram for evaluation of coefficient of discharge (K dr /α w ) or K b in reference to the ratio of back pressure / (p a /p ) Orifice D Orifice E-T,5 K dr = α w = f (p a /p ) and K b = f (p a /p ) dr,9 K dr = α w = f (p a /p ) and K b = f (p a /p ) dr Coefficient of discharge K dr / αw Orifice D "S/G",4,3,2,1,,2,3,4,5,6 Ratio of back pressure / p a / p,7 1,,9,8,7,6,5,4,3,2,1,,8,777 Back pressure correction factor K b Coefficient of discharge K dr / αw,8 Orifice E-T "S/G" 1,,9,7,8,6,5,4,7,6,5,3,4,3,2,2,1,1,,,2,3,4,5,6,7,8,777 Ratio of back pressure / p a / p Back pressure correction factor K b How to use please refer to page /8 1/92 LWN 48.1-E

Accessories and Options Contents Chapter/Page Caps and levers 99/2 Caps and levers bolted 99/4 Metal seat 99/6 Soft seal disc 99/8 Soft seal selection 99/1 Soft seal 99/11 Balanced bellows 99/12 High temperature equipment 99/14 Lift indicator 99/15 Heating jacket 99/16 O-ring damper 99/18 First in safety Fax Order Options LWN 48.1-E 99/1

Accessories and Options Caps and levers Subassembly item 4 Cap H2 Packed lever H4 1 12 2 14 1.5 25 13 25 24 23 24 23 3a 1.6 1.8 1.7 1.1 1.11 1.9 1.4 Plain lever H3 Test gag 12 Cap H2: J7 Packed lever H4: J69 14 13 6 93 93.5 1 3b 23 22 BLOCKED Remove after testing 24 1 4 Test gag The test gag blockades the spindle and keeps the safety valve tight while the system pressure exceeds the. The test gag is used for: - to perform pressure tests in a system without dismantling of the safety valve - the individual adjustment of safety valves installed in the same system Options After testing the test gag must be removed because otherwise the safety valve cannot protect the system against unallowable overpressure! 99/2 LWN 48.1-E

Accessories and Options Caps and levers Subassembly item 4 Materials Steel Stainless steel Item Component Cap H2 Plain lever H3 Packed lever H4 Cap H2 Packed lever H4 1 Lever cover 2 Cap 3a Spacer 3b Hex screw 4 / 1.4 Shaft / bolt 1.5 Lifting fork 6 / 1.6 Lever 1.7 Washer 1.8 Nut 1.9 O-ring 1.9 Bushing 1 / 1.1 Retaining clip 1.1 Nut 1.1 Packing gland 1.11 Support ring 12 Spindle cap 13 Pin 14 Retaining clip 22 Plug 23 Seal 24 Seal wire 25 Sealing nose 93 Test gag 93.5 Washer.74.74 1.448 Gr. 6-4-18 Gr. 6-4-18 CF8M 1.718 1.444 Steel 316L 1.4571 1.4571 316Ti 316Ti 1.441 B8M 1.421 1.718 1.444 42 Steel 316L 1.531 1.4571 Steel 316Ti.74 1.36 1.431 Gr. 6-4-18 Steel 34 1.441 1.431 316 34 A2/Poly 1.441 2H 8M Viton - " - Graphite - " - Carbon steel Carbon steel - " - - " - 1.414 Chrome steel 1.444 316L Carbon steel - " - 1.718 1.718 1.444 Carbon steel Carbon steel 316L Steel Steel 1.441 - " - - " - 8M 1.4571 1.4571 1.4571 316Ti 316Ti 316Ti Plastic - " - Plastic Plastic Plastic Plastic Plastic - " - - " - - " - - " - - " - 1.4541 1.4541 1.4541 1.4541 1.4541 321 321 321 321 321 1.4435 1.4435 1.4435 316L 316L 316L 1.441 1.441 1.441 1.441 B8M B8M B8M B8M Fiber Fiber Fiber Fiber - " - - " - - " - - " - Please notice: Modifications reserved by LESER. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. Options LWN 48.1-E 99/3

Accessories and Options Caps and levers bolted Subassembly item 4 Bolted Cap H1 Bolted lifting device H6 21 2 2 24 3 14 1.1 13 23 1.5 24 12 21 1.6 2 3 23 Test gag Bolted cap H1: J7 Bolted lifting device H6: J69 1.8 1.7 93 BLOCKED Remove after testing 1.1 93.5 1.9 1.4 24 23 Options Discription of the test gag please refer to page 99/2. 99/4 LWN 48.1-E

Accessories and Options Caps and levers bolted Subassembly item 4 Materials Steel Stainless steel Item Component Bolted cap H1 Bolted lifting device H6 Bolted cap H1 Bolted lifting device H6 1.1 Lever cover 1.4 Shaft/bolt 1.5 Lifting fork 1.6 Lever 1.7 Washer 1.8 Nut 1.9 Bushing 1.1 Packing gland 2 Cap 3 Gasket 12 Spindle cap 13 Pin 14 Retaining clip 2 Stud 21 Nut 23 Seal 24 Seal wire 93 Test gag 93.5 Washer.74 1.448 Gr. 6-4-18 CF8M 1.718 1.444 Steel 316L 1.448 1.448 CF8M CF8M 1.36 1.4571 Carbon steel 316Ti Steel 1.441 - " - 316 1.51 1.441 2H 8M Graphite Graphite - " - - " - 1.414 1.444 Chrome steel 316L.74 1.448 Gr. 6-4-18 CF8M Graphite / 1.441 Graphite / 1.441 1.4571 1.4571 Graphite / 316L Graphite / 316L 316Ti 316Ti 1.718 1.444 Carbon steel 316L Steel 1.441 - " - 8M 1.4571 1.4571 316Ti 316Ti 1.1181 1.1181 1.441 1.441 Steel Steel B8M B8M 1.51 1.51 1.441 1.441 2H 2H 8M 8M Plastic Plastic Plastic Plastic - " - - " - - " - - " - 1.4541 1.4541 1.4541 1.4541 321 321 321 321 1.441 1.441 1.441 1.441 B8M B8M B8M B8M Fiber Fiber Fiber Fiber - " - - " - - " - - " - Please notice: Modifications reserved by LESER. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. Options LWN 48.1-E 99/5

Accessories and Options Metal seat Nozzle item 5 and disc subassembly item 7 The LESER metal seats (disc and nozzle) are lapped to optical flatness to ensure a tight seal. LESER safety relief valves are supplied with standard leak tightness according to API 527. Improved tightness is available on request. Type 526 7.1 7.5 5 7.2 Stellited sealing surfaces The sealing surfaces of stainless steel disc and nozzle can be stellited by build-up welding. Stellite is a cobalt-chromium based, non-ferrous alloy with increased hardness, corrosion resistance and wear resistance up to high temperatures. LESER recommends stellited sealing surfaces for Type 526 valves (seat and disc 1.444 / 316L) in the following cases: - high pressure applications, due to the high stress of the sealing surfaces - high temperature applications to avoid a permanent deformation of the sealing surfaces, due to the material properties of the seat and disc - applications with abrasive fluids to increase the wear resistance of the sealing surfaces The stellited sealing surfaces of disc and nozzle are standard for high pressure and high temperature designs; see table materials page 99/7. Type 526 7.1 5 Materials for disc and nozzle see page 99/7. Hardness metal seat Material Hardness of sealing surfaces EN ASME Values from standards or manufacturers specification Average value LESER stock EN 188-3, 1.4122 hardened Hardened stainless steel 4 HRC LWN 325.1 Harding procedure 42 46 HRC EN 1272, 1.444 SA 479 316L 215 HBW EN 1272 Table 7 16 19 HRC 1) EN 1272, 1.444 stellited SA 479 316L stellited 35 HRC Manufacturers specification 4 HRC Options HBW: BRINELL hardness acc. DIN EN ISO 656-1 / HRC: ROCKWELL hardness acc. DIN EN ISO 658-1 1) Rockwell hardness values below 2 HRC are not allowed according to DIN EN ISO 658-1. Lower, fictitious values were created for better comparison. 99/6 LWN 48.1-E

Accessories and Options Metal seat Nozzle item 5 and disc subassembly item 7 Materials Disc Subassembly item 7 Steel Stainless steel Standard Stellited Standard Stellited Item Component Option code: J25 + L44 Option code: * 7.1 Disc 7.2 Lifting aid 7.5 Securing ring 1.4122 hardened 1.444 stellited 1.444 stellited 1.444 stellited Hardened stainless steel 316L stellited 316L stellited 316L stellited 1.444 1.444 1.444 1.444 316L 316L 316L 316L 1.4571 1.4571 1.4571 1.4571 316Ti 316Ti 316Ti 316Ti Materials Nozzle Item 5 Flange rating class 15 3 6 9 25 Body material: WCB 1.619, LCB Nozzle material Standard 1.444 1.444 stellited 1.444 stellited 316L 316L stellited 316L stellited Stellited 1.444 stellited 1.444 stellited 1.444 stellited 316L stellited 316L stellited 316L stellited Option code L62 * * Body material: WC6 1.7357 Nozzle material Standard 1.444 stellited 1.444 stellited 1.444 stellited 316L stellited 316L stellited 316L stellited Stellited 1.444 stellited 1.444 stellited 1.444 stellited 316L stellited 316L stellited 316L stellited Option code * * * Body material: CF8M 1.448 Nozzle material Standard 1.444 1.444 1.444 stellited 316L 316L 316L stellited Stellited 1.444 stellited 1.444 stellited 1.444 stellited 316L stellited 316L stellited 316L stellited Option code L62 L62 * Due to the orifice size the sealing surfaces can differ from this table. For further details please refer to page 1/78. Options LWN 48.1-E 99/7

Accessories and Options Soft seal disc Subassembly item 7 LESER soft seal solutions allow for superior tightness. Features and Benefits two different designs with o-ring or sealing plate for a wide variety application large selection of soft seal materials to best adapt to the application increased service life of sealing surfaces compared to a metal to metal seat simple replacement of the soft seal reduces maintenance costs standard ARP O-ring sizes for easy worldwide procurement one standard durometer per O-ring material for all s to reduce stocking expenses Design of soft seal Type 526 O-ring disc Disc with sealing plate Design 3 1 5 4 3 1 5 4 For temperature limits, medium resistance and option codes please refer to the soft seal selection table, page 99/1 99/11. Materials for soft seal discs see page 99/9. Options 99/8 LWN 48.1-E

Accessories and Options Soft seal disc Subassembly item 7 Materials O-ring disc Item Component Steel Stainless steel 1 Disc with lifting aid 3 Retainer 1.444 1.444 316L 316L 1.444 1.444 316L 316L 4 O-ring See soft seal selection table page 99/1 See soft seal selection table page 99/1 5 Nut 1.441 1.441 8M 8M Materials Disc with sealing plate Item Component Steel Stainless steel 1 Disc with lifting aid 3 Retainer 1.444 1.444 316L 316L 1.444 1.444 316L 316L 4 Sealing plate See soft seal selection table page 99/1 See soft seal selection table page 99/1 5 Nut 1.441 1.441 8M 8M Options LWN 48.1-E 99/9

Accessories and Options Soft seal selection Soft seal selection Abbrevation ASTM 1418 Trade name (Designation) Codeletter 1) Option Code Tmin Tmax [ C] [ F] [ C] [ F] Application 2) O-ring CR Neoprene K J21-4 -4 1 212 Parafin oil, silicone oil and grease, water and waterbased solvents, refrigerants, ozone NBR Buna-N (Nitrile-Butadiene) N J3-25 -13 1 212 Hydraulic oil, vegetable and animal grease and oil EPDM Buna-EP (Ethylene-Propylene- Dine) D J22-45 -49 15 32 Hot water and superheated steam up to 15 C, 32 F, some organic and inorganic acids, silicone oil and grease, FDA compliant FKM Viton (Fluorocarbon) L J23 2-4 18 356 High temperature service (no superheated steam), mineral oil and grease, silicone oil and grease, vegetable and animal grease and oil, ozone, FDA compliant compound available on request FFKM Sealing plate SP PCTFE PTFE Kalrez (Perfluo) VESPEL SP-1 (Polyimide) KEL-F (Polychlorotrifluoroethylene) Teflon (Polytetrafluoroethylene) Other than listed C J2 32 25 482 T J49-27 -454 3 572 G J48-27 -454 24 4 A J44-184 -3 15 32 Nearly all chemicals X For other materials please contact your local representative or sales@leser.com Nearly all chemicals, standard compound is Kalrez 6375 with steam resistance, FDA compliant compound available on request High temperature and high pressure applications (no steam), for chemical resistance refer to manufacturers guide Cryogenic and refrigeration applications, flammable media applications, (e.g. gaseous oxygen) up to 5 bar, 725 psig at 6 C, 14 F 1) The code letters will be stamped on the disc (Item 1). 2) Pressure and temperature service must be considered in any case. Chemical resistance information is supplied by the O-ring manufacturer. LESER can not take any warranty. Options 99/1 LWN 48.1-E

Accessories and Options Soft seal Soft seal disc Material Set pressure and size limits Pressure range Pressure range min. max. [bar] [psig] [bar] [psig] Orifice CR NBR EPDM FKM FFKM 12 148 D K 75,8 11 L M,3 4 68,9 1 N P 41,3 6 Q 2,6 3 R T VESPEL SP-1 1 15 4 58 D G Kel-F 1 15 3 435 D T Teflon 1 15 1 145 D T Material selection Sealing plate Set pressure p [bar g] [psig] J49 Vespel SP-1 J48 PCTFE Kel-F J44 PTFE-FDA Teflon 35 3 25 2 15 1 576 4351 3626 29 2175 145 [ F] -58-418 -328-238 -148-58 5 725 122 212 32 392 482 [ C] -3-25 -2-15 -1-5 5 1 15 2 25 Temperature t Trademarks Soft seal Registered trademarks Company Buna-N, Teflon Viton, VESPEL SP-1 Neoprene, Kalrez Buna EP Kel-F DuPont Bayer 3M Options LWN 48.1-E 99/11

Accessories and Options Balanced bellows Subassembly item 15 LESER is able to provide a balanced bellows design through the use of stainless steel bellows. A B Balanced bellows are generally used for two applications: - to compensate for back pressure - to seal off the bonnet from the outlet chamber Compensation for back pressure The back pressure acts on the reverse side of the disc, creating a force in the closing direction (F c ) of the safety valve. The magnitude of this force depends on the seat area and the level of the back pressure. The balanced bellows constitute an opposite area with the same area like the seat. The back pressure acts on, thereby reducing or eliminating the closing force. This reduction of the force in the closing direction can be viewed as a compensating force acting in the opening directon (F o ). p a A S F O F C A quantitative representation is shown in the table below: Actual area Back pressure Actual force Direction of force Compensation criteria Seat area = A S p a F C = p a x A S closing A S = A B Bellows area = A B p a F O = p a x A B opening F C = F O Sealing the bonnet from the outlet chamber LESER s balanced bellows reliably seal the bonnet from the outlet chamber; protecting the guide, moving parts and the spring from problems associated with the fluid, such as dirt, corrosion, impurities of temperature. Operating conditions Options Temperature limits [ C] up to 55 C [ F] up to 1 F Minimum Orifice Steam /Air Water [bar] [psig] [bar] [psig] D 3,5 5,8 3,5 5,8 E 3,5 5,8 3,5 5,8 F,6 8,7 2, 29 G 3,2 46,4 2,8 4,6 H 2,8 4,6 2,8 4,6 J 3,5 5,8 5, 72,5 K 2,2 31,9 2,5 36,3 L 3,5 5,8 3,5 5,8 M 2,6 37,7 2,2 31,9 N 1,8 26,1 1,8 26,1 P 2,2 31,9 2,2 31,9 Q 1,3 18,8 2,3 33,5 R 1, 14,5 1,4 2,3 T 1,2 17,4 2,5 36,3 99/12 LWN 48.1-E

Accessories and Options Balanced bellows Subassembly item 15 Balanced bellows Type 526 Orifice D 6 R 8 6 R 1 8 T 1 Design NPT 1 / 2 15.2 11 15.3 15.1 Bonnet spacer * Bellows housing * * The bellows housing protects the bellows against turbulences during discharge to avoid bellows vibration and to guarantee a longer life-time. Control thread ASME B1.2.1 NPT 1 / 2 * * A control thread ASME B1.2.1 NPT 1 / 2 is fitted into the bonnet to monitor the condition of the bellows. A discharge pipe can be fitted to the NPT 1 / 2 control thread to allow safe discharge of aggressive or toxic fluids. Bellows materials For standard bellows materials please refer to page 1/5. Hastelloy and Inconel are available as well. Option code Open bonnet Closed bonnet Standard bellows J68 J68 Low pressure bellows Other materials than stand. S15 + material designation S15 + material designation Standard bellows J78 J78 Low pressure bellows Other materials than stand. S15 + material designation S15 + material designation The dimensions and weights of a safety valve with balanced bellows are displayed in the tables Dimensions and weights. The temperature range is displayed in the tables Pressure temperature ratings. Balanced bellows conversion kits LESER balanced bellows conversion kits are available to convert from a convential design into a balanced bellows design with little effort. The conversion kits contain all the necessary parts for conversion as well as instructions. Conversion kits Item Component Quantity Material Remarks 8 Guide 11 Bonnet spacer / Cooling spool 12 Spindle 15 Bellows 55 Stud 6 Gasket Installation instruction For article no. and spare parts please refer to spare part page 1/79. 1 1.444 316L 1 1.444 316L 1 1.444 316L 1 1.4571 316Ti 4, 8, 12 depends on valve size 1.441 B8M 2, 3 depends on valve size Graphite / 1.441 Graphite / 316 1 LWN 37.5 Options LWN 48.1-E 99/13

Accessories and Options High temperature equipment For fluid temperatures higher than 4 C / 752 F high temperature equipment is necessary to protect the inner parts and the spring against inadmissible influence of temperature. The maximum inlet temperature is 55 C / 122 F. The equipment shown is only fitted in Type 5267. For all other Types an open bonnet and a stainless steel bellows is necessary for fluid temperatures exceeding 4 C / 752 F up to max. 45 C / 842 F. Specification Type 5267 Design 54 9 55 56 11 15 7 1 5 Option code J88 Operating conditions Temperature limits [ C] > 4 fluid temperature [ F] max. [ C] max. [ F] > 752 fluid temperature 55 inlet temperature 122 inlet temperature Materials High temperature equipment Item Component Options 1 Body 5 Nozzle 7 Disc 9 Bonnet open 11 Cooling spool 15 Bellows 54 Spring 55 Studs 56 Nuts 1.7357 WC6 1.444 316L 1.444 stellited 316L stellited 1.619 WCB 1.444 316L 1.4571 316L 1.712, 1.8159 High temperature alloy steel 1.779 B16 1.7258 7M 99/14 LWN 48.1-E

Accessories and Options Lift indicator The lift indicator is a useful device that can be used in process control to monitor the operating status of a safety valve. 94 To detect lifting, LESER provides a special lifting device H4 incorporating a proximity switch (see drawing right). The lift indicator will detect a safety valve lift equal to or more than 1 mm /.4 in, which may be the result of overpressure or of operation of the lifting device. LESER provides inductive DC proximity switches, type DIN EN 6947-5-6 (NAMUR) using two-wire technology. These intrinsically safe proximity switches can be used in explosion hazard area zone ( II 1 D Ex iad 2 T6). Other types of proximity switch may be used. If a technical specification is supplied along with the type of connection thread LESER can verify compatibility. For technical details of proximity switch refer to manufacturers homepage: www.pepperl-fuchs.com. Packed lever H4 or bolted H6 For assembly and adjustment refer to LESER works standard LWN 323.3-E. Availability Item Component Option code 9 Bonnet with adaptor for lift indicator J38 4 Lifting device H4 with adaptor for proximity switch M18 x 1 [mm] J39 94 Lift indicator M18 x 1, used type = PEPPERL+FUCHS NJ5-18GK-N J93 Operating chart A, closed position B, open position The lift indicator is positioned in front of the coupling or control sleeve when the safety valve is closed. When the safety valve opens or is lifted (in both cases at least 1 mm /,4 inch), the lift indicator changes its signal. The signal also changes if the lift indicator accidentally becomes loosened or unscrewed (fail safe). Valve lift min. 1 mm /,4 inch Signal High Closed position Open position Low Valve opens time Options LWN 48.1-E 99/15

Accessories and Options Heating jacket Application and design Safety valves in systems which need to be protected from media that are viscous, sticky, or have the tendency to crystallize out of solution can be fitted with a heating jacket. The heating jacket is constructed with a welded design and covers the body, allowing heating medias (steam, heat transfer oil, etc.) to pass through the space created. To protect the spindle and the moving parts against sticking LESER recommends the use of a heating jacket in combination with the balanced bellows design. For safety valves with balanced bellows, the bonnet spacer required to house the bellows is fitted with an additional heating jacket. Both heating jackets are joined by a tubing. If there is no risk of solidification of the media at the outlet a safety valve without balanced bellows can be used as well. The position of the heating connections is shown in figure 1 to 3. Specifications of the Heating Jacket The operating data for the heating jacket are shown on a separate name plate. Slip on flanges Flanged heating connections are supplied as slip on flanges for better alignment of the flange connection. DN G DN D G A DN A DN B B C C E E 1. Heating jacket for balanced bellows design 2. Heating jacket with couplings 3. Heating jacket with slip on flanges Materials Heating jacket Valve size 1 D 2 1 1 / 2 F 2 2 H 3 3 J 4 4 N 6 6 Q 8 8 T 1 1 E 2 1 1 / 2 G 3 2 J 3 3 K 4 4 P 6 6 R 8 3 K 6 3 L 4 Body Series 526 CF8M 1.448 CF8M 1.448 CF8M 1.448 WCB 1.619, WCB 1.619, WCB 1.619, WCB 1.619, CF8M 1.448 CF8M 1.448 CF8M 1.448 CF8M 1.448 Options Heating jacket 1.4541 Connections Slip on flange DIN Slip on flange ANSI B16.5 Couplings DIN 2986 DN 15, PN 25 1.4571, 1.444 316Ti, 316L DN 25, PN 25 1.4571, 1.444 316Ti, 316L 1 / 2 ", class 15 1", class 15 1.444 316L 1.444 316L G 3 / 8 1.4571 316Ti G 3 / 4 1.4571 316Ti Bonnet spacer 1.444 316L 321 Option Code H31 H31 H31 H32 H32 H32 H32 K31 K31 K31 K32 K32 K32 K32 H29 H29 H29 H3 H3 H3 H3 H33 H33 H33 H33 H33 H33 99/16 LWN 48.1-E

Accessories and Options Heating jacket Metric Units Valve size 1 D 2 1 1 / 2 F 2 2 H 3 3 J 4 4 N 6 6 Q 8 8 T 1 1 E 2 1 1 / 2 G 3 2 J 3 3 K 4 4 P 6 6 R 8 3 K 6 3 L 4 Series 526 Dimensions [mm] A 15 117 13 16 21 285 44 B 75 8 8 1 12 156 65 C 96 11 96 162 187 24 D 181 24 389 E 122 136 136 2 225 267 35 Slip on flange DN 15 15 15 25 25 25 25 [inch] Couplings G 3 / 8 3 / 8 3 / 8 3 / 4 3 / 4 3 / 4 3 / 4 Operating conditions Operating pressure [bar] Operating temperature 2 C 25 25 25 15 15 12 12 3 C 18 18 18 11 11 9 9 US Units Series 526 Valve size 1 D 2 1 1 / 2 F 2 2 H 3 3 J 4 4 N 6 6 Q 8 8 T 1 1 E 2 1 1 / 2 G 3 2 J 3 3 K 4 4 P 6 6 R 8 3 K 6 3 L 4 Dimensions [inch] A 4 1 / 8 4 5 / 8 5 1 / 8 6 5 / 16 8 1 / 4 11 1 / 4 15 7 / 8 B 3 3 1 / 8 8 4 4 3 / 4 6 1 / 8 2 1 / 2 C 3 3 / 4 4 3 / 8 3 3 / 4 6 3 / 8 7 3 / 8 9 1 / 2 D 7 1 / 8 8 15 3 / 8 E 4 3 / 4 5 3 / 8 5 3 / 8 7 7 / 8 8 7 / 8 1 1 / 2 12 Slip on flange DN 1 / 2 1 / 2 1 / 2 1 1 1 1 [inch] Couplings G 3 / 8 3 / 8 3 / 8 3 / 4 3 / 4 3 / 4 3 / 4 Operating conditions Operating pressure [psig] Operating temperature 68 F 363 363 363 218 218 174 174 572 F 261 261 261 16 16 131 131 Options LWN 48.1-E 99/17

Accessories and Options O-ring damper Subassembly item 4 The O-ring damper can be employed to suppress or reduce oscillations of moving parts in a safety valve. Background: In every spring loaded safety valve the movable parts disc, spindle, lower spring plate and the spring form a so called springmass system. As with all spring-mass systems, these parts can become excited by unfavorable operating conditions (e.g. inlet pressure drop) or by vibrations transferred from other equipment. Vibrations occuring at resonance frequency can cause the safety valve to undergo rapid, uncontrolled opening and closing, which will cause the valve to function improperly and not allow it to relieve the certified capacity. In general two kinds of uncontrolled oscillations exists (definitions according to ASME PTC 25-21, chapter 2.7): chatter: flutter: Abnormal rapid reciprocating motion of the movable parts of a pressure relief valve in which the disc contacts the seat. Causes for chattering are, among other things, high pressure losses in the inlet piping, excessive built-up back pressure and operation of the valve in the partial load range. Abnormal rapid reciprocating motion of the movable parts of a pressure relief valve in which the disc does not contact the seat. Causes for fluttering are vibrations with small or hardly measurable amplitude, where high frequency vibrations accumulate from external influences. The vibrations are usually induced by separate units (e.g. motors, pumps) and transmitted via a mechanical connection or the medium to the safety valve. LESER developed the O-ring damper at LESER s certified test labs based on long experience in the operation of safety valves. The O-ring damper is able to completely stabilize function or reduce oscillations to slow, uncritical movements. Also, the safety valve will still operate within the required ranges of the applicable codes and standards. Due to its design, the O-ring damper is able to be used for any type of oscillation. LESER offers the O-ring damper incorporated in the gastight cap H2 or in a modified lifting device H4 with packed lever. For applications with lubricating fluids, e.g. oil, the balanced bellows design must be selected to protect the O-ring damper from the fluid. Available designs Cap H2 Packed lever H4 Design 82 22 83 27 2 82 22 83 27 15 13 14 1 2 Options Option Conventionel design J65 J66 code J65, J78 J66, J78 O-ring -2 C +18 C -4 F +356 F 99/18 LWN 48.1-E

Accessories and Options O-ring damper Subassembly item 4 Availability Series 526 Valve size Cap H2 and Packed lever H4 Pressure range Safety valves with O-ring damper are not designated in the ASME code. For applications according to CE/VdTUEV O-ring damper are available on request. LESER has ensured proper performance of the O-ring damper through extensive tests at its certified test labs. If an O-ring damper is required further testing must be performed, which will require a longer lead time; please contact sales@leser.com. Materials Item Component Cap H2 Packed lever H4 1 Lever cover 2 Cap H2 13 Parallel pin 14 Securing ring 15 Spindle 22 Opposite ring 27 Bush 27 Nozzle 82 Spring 83 O-ring 1.448 CF8M 1.444 1.444 316L 316L A4 Steel 1.4571 316Ti 1.444 316L 1.444 1.444 316L 316L 1.444 316L PFTE 15% glas - " - 1.431 1.431 Stainless steel Stainless steel Viton Viton - " - - " - Options LWN 48.1-E 99/19

First in safety a not so brief history of LESER Headquartered in Germany, with a state of the art factory and more than 3 employees LESER are supplying high quality safety valves all over the world. Safe solutions from the specialist Today, LESER s product range comprises a total of 7 product groups with 38 safety valve types. A variety of materials and sizes from DN 1 to DN 4 1 / 2" to 16", provide safe solutions for almost every industrial application. High Performance: Safety valves of this design are generally installed for protection of pressure vessels and industrial systems (gas, steam and liquid applications) by providing rapid discharge of the maximum possible mass flow. API: Safety valves according to the API Standard 526; predominantly applicable for the petrochemical and chemical industries. The company started in Germany in 1818, more than 185 years ago, as a brass foundry and developed a product portfolio of components of mechanical equipment and machines during the industrial revolution. In 1885 the company delivered its first safety valve and since the 197 s LESER has specialized only in safety valves. Since the 198 s LESER has been the leading supplier for safety valves in Europe and strengthens this position each year. Currently LESER are expanding its activities worldwide. Compact Performance: Safety valves for protection of small and medium mass flows for traditional applications like pumps and compressor, but also adapted for cryo applications. Clean Service: Safety valves for protection of systems with sanitary and hygienic requirements in the food, beverage and pharmaceutical industries. Critical Service: Safety valves partially or fully lined typically with PTFE, suitable for aggressive and corrosive media. Modulate Action: Safety valves which are installed for protection of small mass flow predominantly for liquids to assure a minimization of the media losses. Suitable for thermal relief applications. Best Availability: Other complimentay product series such as supplementary loading systems, change-over valves and bursting discs which complete the LESER product offering. LWN 48.1-E