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

Transcription

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

2 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

3 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

4 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 USA: UV-stamp acc. to ASME Section VIII Division 1, National Board certified capacities Germany: VdTÜV approval acc. to PED, EN ISO , 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 , EN /-2, EN 192 Part I and II flanging ASME PTC 25, ASME-Code Sec. II, ASME B 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

5 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, 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

6 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

7 Valve finder How to find the right API Safety Valve General Step Procedere Reference 6 LESER Type 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, WC , LCB CF8M 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 X X X X X WC X X X X WCB WC6 T [ F] Selection chart p [bar] 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] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 1 D 2 3 x 15 WC Art.-No LCB Art.-No 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] ,5 28,3 Act. Orifice area A [mm 2 ] LEOS/G* [inch 2 ],111,196,324,56,81 Set pressure [bar] Capacities [kg/h], , 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

8 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 B , paragraph : 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 WCB, WCC 3 Low temperature carbon steel LCB, LCC, WCB, WCC 4 Stainless steel CF8M (Charpy test at -196 C) 7 High temperature carbon steel WC6 /5 LWN 48.1-E

9 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 X X X X X WC X X X X p [bar] 241, WCB WC T [ F] T [ C] p [psig] 1 Explanation No. Description Example 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 Article No. (X = Code for lifting device) X LWN 48.1-E /6

10 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] ,5 28,3 Act. Orifice area A [mm 2 ] LEOS/G* ) [inch 2 ],111,196 5,324,56,81 Set pressure [bar] Capacities [kg/h], , 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] * ) 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 ] LESER Effective Orifice LEO S/G [inch 2 ] [inch 2 ],324 6 Set pressure [bar g ] [psig] 1 7 Capacity [kg/h] [lb/h] Base of calculation see table page /8 /7 LWN 48.1-E

11 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

12 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,% D 2,551 14,,455,111 56,8% 11,2% / 2 D 2,551 14,,455,111 56,8% 11,2% / 2 D 3,551 14,,455,111 56,8% 11,2% E,196 1,% 1,% E 2,551 14,,81,196 63,9% 1,% / 2 E 2,551 14,,81,196 63,9% 1,% / 2 E 3,551 14,,81,196 63,9% 1,% F,37 1,% 1,% / 2 F 2,79 18,,81,324 64,4% 15,5% / 2 F 3,79 18,,81,324 64,4% 15,5% G,53 1,% 1,% / 2 G 3,886 22,5,81,56 64,5% 1,7% 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,% 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% J 4 1,417 36,,81 1,296 7,5% 1,7% K 1,838 1,% 1,% K 4 1,693 43,,81 1,849 64,8% 1,6% 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% L 6 2,16 53,5,81 2,863 79,5% 1,3% M 3,6 1,% 1,% M 6 2,374 6,3,81 3,637 83,8% 11,% N 4,34 1,% 1,% N 6 2,598 66,,81 4,357 68,3% 1,4% P 6,38 1,% 1,% P 6 3,15 8,,81 6,41 57,9% 1,3% Q 11,5 1,% 1,% 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,% R 1 4,98 126,5,81 16,4 61,6% 1,% T 26, 1,% 1,% T 1 6, ,5,81 26,85 1,3% /9 LWN 48.1-E

13 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,% D 2,551 14,,343,126 64,2% 114,5% / 2 D 2,551 14,,343,126 64,2% 114,5% / 2 D 3,551 14,,343,126 64,2% 114,5% E,196 1,% 1,% E 2,551 14,,579,213 69,2% 18,4% / 2 E 2,551 14,,579,213 69,2% 18,4% / 2 E 3,551 14,,579,213 69,2% 18,4% F,37 1,% 1,% / 2 F 2,79 18,,579,351 69,8% 114,4% / 2 F 3,79 18,,579,351 69,8% 114,4% G,53 1,% 1,% / 2 G 3,886 22,5,579,549 69,9% 19,1% 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% 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% J 4 1,417 36,,579 1,45 76,5% 19,2% K 1,838 1,% 1,% K 4 1,693 43,,579 2,5 7,3% 19,1% 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% L 6 2,16 53,5,579 3,14 86,2% 18,8% M 3,6 1,% 1,% M 6 2,374 6,3,579 3,943 9,9% 19,5% N 4,34 1,% 1,% N 6 2,598 66,,579 4,724 74,% 18,8% P 6,38 1,% 1,% P 6 3,15 8,,579 6,94 62,8% 18,8% Q 11,5 1,% 1,% 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% R 1 4,98 126,5,579 17,353 66,7% 18,5% T 26, 1,% 1,% T 1 6, ,5,579 28,283 18,8% LWN 48.1-E /1

14 General Sour gas service (H 2 S) Normative basis In accordance with NACE standard MR sour gas service means the presence of H 2 S in the following conditions: Part : 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 : Low-pressure gas: When the total pressure is lower than 4,5 bar a (65psia) Part : 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 : 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 :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 Body material WCB LCB WC 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 / 316L stellited / 316L stellited J25 J25 Please choose balanced bellows design / 316L J25 stellited Bellows / 316Ti J / 316Ti J CF8M Conventional No modification required No modification required Balanced bellows Bellows / 316Ti J / 316Ti J78 /11 LWN 48.1-E

15 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

16 Type Cap H2 Lock nut Adjusting screw Needle bearing Spring plate 54 Spring 12 Spindle 9 Bonnet 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

17 Item Materials Component Standard Service Type 5262 Trim: Standard Corrosive Service Type 5264 Trim: Standard Type 5267 Trim: Standard Type 5263 Trim: Standard Type Body SA 216 WCB SA 315 CF8M SA 217 WC6 SA 352 LCB 5 Nozzle 1) stellited 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 CF8M CF8M 316L CF8M stellited Hardened stainless steel 316L stellited Hardened stainless steel Hardened stainless steel L 316L 316L 316L , SA 216 WCB SA L, 316Ti SA 217 WC6 SA 352 LCB Chrome steel 316L Chrome steel Chrome steel Steel 316L Steel Steel tenifer Chrome steel 316L tenifer Chrome steel Chrome steel PTFE with 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas " " " " Steel 316L Steel Steel L 316L 316L 316L Steel 316L Steel Steel High temp. alloy steel Stainless steel High temp. alloy steel High temp. alloy steel B8M B8M B8M B8M M 8M 8M 8M Graphite / Graphite / Graphite / Graphite / Graphite / 316 Graphite / 316 Graphite / 316 Graphite / Hardened stainless steel 316 Hardened stainless steel Hardened stainless steel Steel Steel Steel " B8M " " B8M B8M B8M B8M L 316 L 316L 316L M 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

18 Type Cap H2 Lock nut Adjusting screw Needle bearing Spring plate 54 Spring 12 Spindle 9 Bonnet 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

19 Materials Item Component 1 Body Standard Service Type 5262 Trim: Standard Corrosive Service Type 5264 Trim: Standard Type 5267 Trim: Standard Type 5263 Trim: Standard SA 216 WCB SA 315 CF8M SA 217 WC6 SA 352 LCB 5 Nozzle 2) stellited L 316L 316L stellited 316L 6 Adjusting ring 7 Disc 8 Guide 9 Bonnet Valve size 6 R 1, 8T CF8M CF8M 316L CF8M stellited Hardened stainless steel 316L stellited Hardened stainless steel Hardened stainless steel L 316L 316L 316L , SA 216 WCB SA L, 316Ti SA 217 WC6 SA 352 LCB Steel SA Ti Steel Steel 11 Bonnet spacer 1) Carbon steel SA L SA L 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 Chrome steel 316L Chrome steel Chrome steel Ti 316 Ti 316 Ti 316 Ti Steel 316L Steel Steel tenifer Chrome steel 316L tenifer Chrome steel Chrome steel PTFE with 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas " " " " Steel 316L Steel Steel L 316L 316L 316L Steel 316L Steel Steel High temp. alloy steel Stainless steel High temp. alloy steel High temp. alloy steel B8M B8M B16 B8M M 8M 7M 8M Graphite / Graphite / Graphite / Graphite / Graphite / 316 Graphite / 316 Graphite / 316 Graphite / Hardened stainless steel 316 Hardened stainless steel Hardened stainless steel B8M B8M B8M B8M L 316 L 316L 316L M 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

20 How to order Numbering system Type Article Number Set Pressure Connections 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 Material code Code Body + bonnet material 2 WCB LCB 4 CF8M WC 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 H Article No. 5 barg Set Pressure H45 Connections 1/6 LWN 48.1-E

21 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 / 316L stellited J25 Nozzle / 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 : TÜV-Nord Certificate for test pressure M33 LESER Certificate for Global Application - Inspection certificate 3.1 acc. to DIN EN Declaration of conformity acc. to PED 97/23/EC Material test certificate: DIN EN Part Body Bonnet Cap / lever cover Nozzle Disc Studs Nuts H3 Option code H1 L3 L31 L59 L23 N7 N 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

22 Article numbers Overview Type 526 Article numbers Material WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB 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 Use 1 D x E 2 1 E 2 1 E Use 1 E x / 2 F / 2 F / 2 F G 1 1 / 2 G / 2 G / 2 G Flange class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H / 2 H 3 2 H 3 H J 2 J 3 2 J 3 3 J K 3 K 4 3 K 4 3 K Use 3 K x Flange 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 4 M 6 4 M 6 4 M Use 4 M x N 6 4 N 6 4 N Use 4 N x P 6 4 P 6 4 P Q 8 6 Q 8 6 Q Use 6 Q x R 8 6 R 8 6 R T 1 8 T 1 8 T Use 8 T x /8 LWN 48.1-E

23 Article numbers Overview Article numbers Material WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB Flange class 6 x 15 9 x 3 15 x 3 25 x 3 Valve size 1 D / 2 D / 2 D / 2 D 3 D E F G Use 1 1 / 2 D x E / 2 E / 2 E / 2 E Use 1 1 / 2 E x / 2 F / 2 F / 2 F / 2 F Use 1 1 / 2 F x / 2 G / 2 G 3 2 G 3 2 G Flange class 6 x 15 9 x x 3 Valve size 2 H 3 2 H 3 2 H 3 H Type 526 J 3 J 4 3 J 4 3 J K 3 K 4 3 K 6 3 K Flange class 6 x 15 9 x x 15 Valve size 4 L 6 4 L 6 4 L 6 L M N P Q 4 M 6 4 M N 6 4 N P 6 4 P Q R T 6 R 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, WC , LCB CF8M LWN 48.1-E 1/9

24 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] Please see 1 D A [mm 2 ] Ø x Ø E 2 1 E 2 1 E 2 d [mm] Please see 1 E A [mm 2 ] Ø x Ø / 2 F / 2 F / 2 F 2 d [mm] A [mm 2 ] Ø Ø Ø / 2 G / 2 G / 2 G 3 d [mm] 22, A [mm 2 ] Ø Ø Ø Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H / 2 H 3 2 H 3 H J K d [mm] 28, A [mm 2 ] Ø Ø Ø J 3 2 J 3 2 J 3 d [mm] A [mm 2 ] Ø Ø Ø K 4 3 K 4 3 K 4 WCB, LCB, d [mm] Please see 3 K CF8M (WC6) A [mm 2 ] Ø x Ø 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, A [mm 2 ] Ø Ø Ø M 6 4 M 6 4 M 6 d [mm] 6, Please see 4 M A [mm 2 ] Ø x Ø N 6 4 N 6 4 N 6 d [mm] Please see 4 N A [mm 2 ] Ø x Ø P 6 4 P 6 4 P 6 d [mm] A [mm 2 ] Ø Ø Ø Q 8 6 Q 8 6 Q 8 d [mm] 15, Please see 6 Q A [mm 2 ] Ø x Ø R 8 6 R 8 6 R 1 d [mm] 126, A [mm 2 ] Ø Ø Ø T 1 8 T 1 8 T 1 d [mm] 161, Please see 8 T A [mm 2 ] Ø x Ø /1 LWN 48.1-E

25 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 D / 2 D / 2 D Please see 1 1 / 2 D Ø x Ø Ø E / 2 E / 2 E / 2 E Please see 1 1 / 2 E Ø x Ø Ø / 2 F / 2 F / 2 F / 2 F Please see 1 1 / 2 F Ø x Ø Ø / 2 G / 2 G 3 2 G 3 2 G Ø Ø Ø Ø x 15 9 x x 3 2 H 3 2 H 3 2 H Ø Ø Ø J 4 3 J 4 3 J Ø Ø Ø K 4 3 K 6 3 K Ø Ø Ø Ø x 15 9 x x 15 4 L 6 4 L 6 4 L Ø Ø Ø M 6 4 M Ø Ø N 6 4 N Ø Ø P 6 4 P Ø Ø Q Ø R Ø Support brackets Hmax. with bellows Type 526 LWN 48.1-E 1/11

26 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], / / / / / 16 Please see 1 D / / / / / 16 A [inch 2 ], / 8 Ø 9 / / 32 5 / 8 3 x / 8 Ø 9 / / 32 5 / 8 1 E 2 1 E 2 1 E 2 d [inch], / / / / / 16 Please see 1 E / / / / / 16 A [inch 2 ], / 8 Ø 9 / / 32 5 / 8 3 x / 8 Ø 9 / / 32 5 / / 2 F / 2 F / 2 F 2 d [inch], / / / / / / / / / / / / / / 32 A [inch 2 ], / 8 Ø 9 / / 5 32 / / 8 Ø 9 / / 5 32 / / 8 Ø / 5 32 / / 2 G / 2 G / 2 G 3 d [inch], / / / / / / / / / / / / / / 32 A [inch 2 ], / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / 8 Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H / 2 H 3 2 H 3 H J K d [inch] 1, / / / / / / / / / / / / / / / 4 A [inch 2 ], / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / / / 32 Ø 9 / / 32 5 / 8 2 J 3 2 J 3 2 J 3 d [inch] 1, / / / / / / / / / / / / / / / 16 A [inch 2 ] 1, / / 32 Ø 9 / / 4 5 / / / 32 Ø 9 / / 4 5 / / / 2 Ø 23 / / / 32 3 K 4 3 K 4 3 K 4 WCB, LCB, d [inch] 1, / / / / / 32 Please see 3 K / / / / / 32 CF8M (WC6) A [inch 2 ] 2, / / 2 Ø 23 / / / 32 3 x / / 2 Ø 23 / / / 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, / / / / / / / / / / / / / / / 8 A [inch 2 ] 3, / / 2 Ø 23 / / / / / 2 Ø 23 / / / / / 16 Ø 23 / / / 32 4 M 6 4 M 6 4 M 6 d [inch] 2, / / / / 32 Please see 4 M / / / / 32 A [inch 2 ] 4, / / 16 Ø 23 / / 4 31 / 32 3 x / / 16 Ø 23 / / 4 31 / 32 4 N 6 4 N 6 4 N 6 d [inch] 2,6 7 3 / / / / / 32 Please see 4 N / / / / / 32 A [inch 2 ] 5, / / 16 Ø 23 / / 32 3 x / / 16 Ø 23 / / 32 4 P 6 4 P 6 4 P 6 d [inch] 3, / / / / / / / / / / / / 16 A [inch 2 ] 7, / / 16 Ø 23 / / / / / 16 Ø 23 / / / / / 32 Ø 23 / / / 32 6 Q 8 6 Q 8 6 Q 8 d [inch] 4, / / / / / 4 Please see 6 Q / / / / / 4 A [inch 2 ] 13, / / 32 Ø 23 / / 8 31 / 32 3 x / / 32 Ø 23 / / 8 31 / 32 6 R 8 6 R 8 6 R 1 d [inch] 4, / / / / / / / / / / / / / / / 8 A [inch 2 ] 19, / / 32 Ø 23 / / 8 31 / / / 32 Ø 23 / / 8 31 / / / 32 Ø 23 / / 8 31 / 32 8 T 1 8 T 1 8 T 1 d [inch] 6, / / / / 16 Please see 8 T / / / / 16 A [inch 2 ] 31, / / 32 Ø 23 / / / 32 3 x / / 32 Ø 23 / / / 32 1/12 LWN 48.1-E

27 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 D / 2 D / 2 D 3 Hmax. with bellows 4 1 / / / / / 16 Please see 1 1 / 2 D / / / / / / / / / / 8 Ø 9 / / 32 5 / 8 15 x / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / 8 1 E / 2 E / 2 E / 2 E / / / / / 16 Please see 1 1 / 2 E / / / / / / / / / / 8 Ø 9 / / 32 5 / 8 15 x / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / / 2 F / 2 F / 2 F / 2 F / / / / 32 Please see 1 1 / 2 F / / / / / / / / / / 8 Ø 9 / / 32 5 / 8 15 x / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / / 2 G / 2 G 3 2 G 3 2 G 3 Type / / / / / / / / / / / / / / / / / / / / 8 Ø 9 / / 32 5 / / 8 Ø / 32 5 / / / 32 Ø 9 / / 16 5 / / / 32 Ø 9 / / 16 5 / 8 6 x 15 9 x x 3 2 H 3 2 H 3 2 H / / / / / / / / / / / / / / / / / 32 Ø 9 / / 16 5 / / / 32 Ø 9 / / 16 5 / / / 32 Ø 9 / / 16 5 / 8 3 J 4 3 J 4 3 J / / / / / / / / / / / / / / / / / 2 Ø 23 / / / / / 2 Ø 23 / / / / / 2 Ø 23 / / / 32 3 K 4 3 K 6 3 K / / / / / / / / / / / / / / / / / 2 Ø 23 / / / / / 16 Ø 23 / / / / / 16 Ø 23 / / / / / / / / / / 2 Ø 23 / / / 32 6 x 15 9 x x 15 4 L 6 4 L 6 4 L / / / / / / / / / / / 4 2 / / / / / 16 Ø 23 / / / / / 16 Ø 23 / / / / 16 Ø 23 / / 32 4 M 6 4 M / / / / / / / / / / 16 Ø 23 / / 4 31 / / / 16 Ø 23 / / 32 4 N 6 4 N / / / / / / / / / / / / 16 Ø 23 / / / / 16 Ø 23 / / 32 4 P 6 4 P / / / / / / / / / / 32 Ø 23 / / / / / 32 Ø 23 / / / 32 6 Q / / / / / / / 32 Ø 23 / / 8 31 / 32 6 R / / / / / / / 32 Ø 23 / / 8 31 / 32 Support brackets LWN 48.1-E 1/13

28 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 D / 2 D / 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 E / 2 E / 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 F / 2 F / 2 F / 2 F / 2 F / 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, this size 38,6 44,6 1 1 / 2 G / 2 G / 2 G / 2 G / 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, ,6 72,5 72,5 Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Valve size 1 1 / 2 H / 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 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, ,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 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, with bellows [kg] 114,8 114, Q 8 6 Q 8 6 Q 8 6 Q 8 Weight [kg] 221 Use 3 lbs dimensions for with bellows [kg] 23 this size R 8 6 R 8 6 R 1 6 R 1 Weight [kg] with bellows [kg] 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

29 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 D / 2 D / 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 E / 2 E / 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 F / 2 F / 2 F / 2 F / 2 F / 2 F 3 Weight [lbs] 67,5 67,5 71,7 71,7 Use 15 lbs 8 92,2 dimensions for with bellows [lbs] ,2 77,2 this size 85,1 98,3 1 1 / 2 G / 2 G / 2 G / 2 G / 2 G 3 2 G 3 2 G 3 Weight [lbs] 67,5 67,5 71,7 71, ,1 154,1 with bellows [lbs] ,2 77, ,9 159,9 Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Valve size 1 1 / 2 H / 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] , 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 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, ,7 281,1 with bellows [lbs] 166,9 166, ,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, ,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, 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

30 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 X X X X X X X X X 1 p [bar] D WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/16 LWN 48.1-E

31 Orifice D Article numbers, dimensions and weights Article numbers Valve size 1 D 2 1 D 2 1 D 2 1 D / 2 D / 2 D / 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] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 1 D Use 1 1 / 2 D WC Art.-No. 3 x x LCB Art.-No 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 [mm] Outlet b s 3 Use 1 D Use 1 1 / 2 D Height (H4) Standard H max x x [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E US Units Weight 38,1 38,1 38,1 68,6 92,2 [lbs] with bellows 4,5 4,5 4, ,4 Center to face Inlet a 4 1 / / / / / 2 [inch] Outlet b 4 1 / / / / 2 7 s 1 3 / 16 Use 1 D / / 16 Use 1 1 / 2 D / / 4 Height (H4) Standard H max / 16 3 x / / x / / 16 [inch] Bellows H max / / / / / 16 Support brackets A 5 1 / / / / / 8 [inch] B C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 7 / / / / / 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, WC , LCB CF8M Support brackets LWN 48.1-E 1/17

32 Orifice D Pressure temperature ratings Metric Units D Valve size 1 D 2 1 D 2 1 D 2 1 D / 2 D / 2 D / 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] Actual Orifice area A [mm 2 ] Body material: WCB 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 x 3 19,7 19,7 19,7 41,4 51, Body material: CF8M ,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: WC 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 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/18 LWN 48.1-E

33 Orifice D Pressure temperature ratings US Units Valve size 1 D 2 1 D 2 1 D 2 1 D / 2 D / 2 D / 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 1 D Use 1 1 / D 2 3 x x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 18 Use 1 D Use 1 1 / 2 D to 8 F 8 3 x x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 1 1 / 2 D x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 1 D Use 1 1 / 2 D x x D Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/19

34 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 X X X X X WC X X X X 1 p [bar] E WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/2 LWN 48.1-E

35 Orifice E Article numbers, dimensions and weights Article numbers Valve size 1 E 2 1 E 2 1 E 2 1 E / 2 E / 2 E / 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] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 1 E Use 1 1 / 2 E WC Art.-No. 3 x x LCB Art.-No ) 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 [mm] Outlet b s 3 Use 1 E Use 1 1 / 2 E Height (H4) Standard H max x x [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E US Units Weight 38,1 38,1 38,1 68,6 92,2 [lbs] with bellows 4,5 4,5 4, ,4 Center to face Inlet a 4 1 / / / / / 2 [inch] Outlet b 4 1 / / / / 2 7 s 1 3 / 16 Use 1 E / / 16 Use 1 1 / 2 E / / 4 Height (H4) Standard H max / 16 3 x / / x / / 16 [inch] Bellows H max / / / / / 16 Support brackets A 5 1 / / / / / 8 [inch] B C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 7 / / / / / 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, WC , LCB CF8M Support brackets LWN 48.1-E 1/21

36 Orifice E Pressure temperature ratings Metric Units E Valve size 1 E 2 1 E 2 1 E 2 1 E / 2 E / 2 E / 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] Actual Orifice area A [mm 2 ] Body material: WCB 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 x 3 19,7 19,7 19,7 41,4 51, Body material: CF8M ,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: WC 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 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/22 LWN 48.1-E

37 Orifice E Pressure temperature ratings US Units Valve size 1 E 2 1 E 2 1 E 2 1 E / 2 E / 2 E / 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 1 E Use 1 1 / E 2 3 x x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 18 Use 1 E Use 1 1 / 2 E to 8 F 8 3 x x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 1 1 / 2 E x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 1 E Use 1 1 / 2 E x x E Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/23

38 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 X X X X X X WC X X X X 1 p [bar] F WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/24 LWN 48.1-E

39 Orifice F Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F / 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] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 1 1 / 2 F WC Art.-No x LCB Art.-No ) 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, ,6 44,6 Center to face Inlet a [mm] Outlet b s Use 1 1 / 2 F Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E F US Units Weight 67,5 67,5 71,1 71,1 8 92,2 [lbs] with bellows ,2 77,2 85,1 98,4 Center to face Inlet a 4 7 / / / / / / 2 [inch] Outlet b 4 3 / / / 2 7 s 1 1 / / / / 32 Use 1 1 / 2 F / / 4 Height (H4) Standard H max / / / / x / / 16 [inch] Bellows H max / / / / / / 16 Support brackets A 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 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, WC , LCB CF8M Support brackets LWN 48.1-E 1/25

40 Orifice F Pressure temperature ratings Metric Units F Valve size 1 1 / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F / 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] Actual Orifice area A [mm 2 ] Body material: WCB 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 ,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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/26 LWN 48.1-E

41 Orifice F Pressure temperature ratings US Units Valve size 1 1 / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F / 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Use 1 1 / F 3 15 x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F Use 1 1 / 2 F to 8 F x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 1 1 / 2 F x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F Use 1 1 / 2 F x F Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/27

42 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 X X X X X X X WC X X X X X 1 p [bar] G WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X X X X X X X 1 p [bar] CF8M T [ F] T [ C] p [psig] 1/28 LWN 48.1-E

43 Orifice G Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 G / 2 G / 2 G / 2 G / 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 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) 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, ,6 72,5 72,5 Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E G US Units Weight 67,5 67,5 71,7 71, ,1 154,1 [lbs] with bellows ,2 77,2 85,1 159,9 159,9 Center to face Inlet a 4 7 / / / / / / / 8 [inch] Outlet b 4 3 / / / / / 4 s 1 1 / / / / / / / 16 Height (H4) Standard H max / / / / / / / 32 [inch] Bellows H max / / / / / / / 4 Support brackets A 6 3 / / / / / / / 4 [inch] B 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 / / / / / / / 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, WC , LCB CF8M Support brackets LWN 48.1-E 1/29

44 Orifice G Pressure temperature ratings Metric Units G Valve size 1 1 / 2 G / 2 G / 2 G / 2 G / 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 ] Body material: WCB 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 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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/3 LWN 48.1-E

45 Orifice G Pressure temperature ratings US Units Valve size 1 1 / 2 G / 2 G / 2 G / 2 G / 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F Body material: CF8M to 8 F Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F G Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/31

46 Orifice H Selection chart WCB WC6 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x X X X X X X X X X X 1 p [bar] WCB WC6 T [ F] T [ C] H p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x X X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/32 LWN 48.1-E

47 Orifice H Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 H / 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 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 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) 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 [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E H US Units Weight 67,5 67,5 98,3 137,2 137,2 137,2 [lbs] with bellows , Center to face Inlet a 5 1 / / / / / / 16 [inch] Outlet b 4 7 / / / / / / 8 s 1 1 / / / / / / 16 Height (H4) Standard H max / / / / / / 32 [inch] Bellows H max / / / / / / 32 Support brackets A 6 3 / / / / / / 4 [inch] B 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 / / / / / / 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, WC , LCB CF8M Support brackets LWN 48.1-E 1/33

48 Orifice H Pressure temperature ratings Metric Units H Valve size 1 1 / 2 H / 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 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 ] Body material: WCB 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 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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/34 LWN 48.1-E

49 Orifice H Pressure temperature ratings US Units Valve size 1 1 / 2 H / 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 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F Body material: CF8M to 8 F Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F H Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/35

50 Orifice J Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x 3 WCB X X X X X X WC X X X X 1 p [bar] WCB WC6 T [ F] T [ C] J p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x X X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/36 LWN 48.1-E

51 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 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) 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 [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 18 Ø 18 Ø 18 Ø 18 D E 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 / / / / / / 4 [inch] Outlet b 4 7 / / / / / / 8 s 1 15 / / / / / / 16 Height (H4) Standard H max / / / / / / 16 [inch] Bellows H max / / / / / / 16 Support brackets A 7 1 / / / / / / 8 [inch] B 4 11 / / / / / / 2 C Ø 9 / 16 Ø 9 / 16 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 7 1 / / / / / / 32 E 5 / 8 5 / 8 31 / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets LWN 48.1-E 1/37

52 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 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material: WCB 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 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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/38 LWN 48.1-E

53 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 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F Body material: CF8M to 8 F Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F J Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/39

54 Orifice K Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x 3 WCB X X X X X WC X X X X 1 p [bar] WCB WC6 T [ F] T [ C] K CF8M p [psig] 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/4 LWN 48.1-E

55 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 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 3 K WC Art.-No. 3 x LCB Art.-No ) 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 [mm] Outlet b s 49 Use 3 K Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D E 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 / / / / / / 4 [inch] Outlet b 6 3 / / / / / / 2 s 1 15 / 16 Use 3 K / / / / / 16 Height (H4) Standard H max / 32 3 x / / / / / 32 [inch] Bellows H max / / / / / / 32 Support brackets A 9 3 / / / / / / 16 [inch] B 5 1 / / / / / / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 8 3 / / / / / / 32 E 31 / / / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets LWN 48.1-E 1/41

56 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 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material: WCB 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 ,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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/42 LWN 48.1-E

57 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 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Use 3 K 4 3 x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F 8 Use 3 K to 1 F 2 3 x Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F Use 3 K 4 3 x K Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/43

58 Orifice L Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X X X X WC X X X X 1 p [bar] WCB WC6 T [ F] T [ C] p [psig] L 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 CF8M X X X X X 1 p [bar] CF8M T [ F] T [ C] p [psig] 1/44 LWN 48.1-E

59 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 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 ] WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 7,1 7,1 112, ,1 127,5 [kg] with bellows 75,7 75,7 118,8 128,6 14,7 134,1 Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D E US Units Weight 154,6 154,6 247, ,7 281,1 [lbs] with bellows 166,9 166, ,6 31,2 295,7 Center to face Inlet a 6 1 / / / / / / 4 [inch] Outlet b 6 1 / / / / / 4 L s 1 15 / / / / / / 4 Height (H4) Standard H max / / / / / / 32 [inch] Bellows H max / / / / / / 32 Support brackets A 9 3 / / / / / / 16 [inch] B 5 1 / / / / / / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 8 3 / / / / E 31 / / / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets LWN 48.1-E 1/45

60 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 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 ] Body material: WCB 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 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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/46 LWN 48.1-E

61 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 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F Body material: CF8M to 8 F Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F L Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/47

62 Orifice M Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X X WC X X X 1 p [bar] WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X X X M 1 p [bar] CF8M T [ F] T [ C] p [psig] 1/48 LWN 48.1-E

63 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 ] Body material WCB Art.-No CF8M Art.-No Use 4 M WC Art.-No. 3 x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 112,1 112, ,1 [kg] with bellows 118,7 118,7 128,6 134,1 Center to face Inlet a [mm] Outlet b s 48 Use 4 M Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 D E US Units Weight 247,2 247, ,7 [lbs] with bellows 261,7 261,7 283,6 31,2 Center to face Inlet a / 4 [inch] Outlet b 7 1 / / / 4 s 1 7 / 8 Use 4 M / / / 4 Height (H4) Standard H max / 32 3 x / / / 32 M [inch] Bellows H max / / / / 32 Support brackets A 1 15 / / / / 16 [inch] B 6 5 / / / / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 1 1 / / / 4 11 E 31 / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets LWN 48.1-E 1/49

64 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 ] Body material: WCB 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 ,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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/5 LWN 48.1-E

65 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 4 M x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 18 Use 4 M to 8 F 8 3 x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 4 M 6 3 x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 4 M x M Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/51

66 Orifice N Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X X WC X X X 1 p [bar] WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X X X 1 p [bar] N CF8M T [ F] T [ C] p [psig] 1/52 LWN 48.1-E

67 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] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 4 N WC Art.-No. 3 x LCB Art.-No ) 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 [mm] Outlet b s 48 Use 4 N Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 D E 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 [inch] Outlet b 8 1 / / / / 4 s 1 7 / 8 Use 4 N / / / 4 Height (H4) Standard H max / 32 3 x / / / 32 [inch] Bellows H max / / / / 32 Support brackets A 1 15 / / / / 16 [inch] B 6 5 / / / / 16 N C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D E 31 / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets LWN 48.1-E 1/53

68 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] Actual Orifice area A [mm 2 ] Body material: WCB 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 ,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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/54 LWN 48.1-E

69 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 4 N x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 18 Use 4 N to 8 F 8 3 x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 4 N 6 3 x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 4 N x N Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/55

70 Orifice P Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X X X WC X X X 1 p [bar] WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X X X X 1 p [bar] P CF8M T [ F] T [ C] p [psig] 1/56 LWN 48.1-E

71 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] Body material Actual Orifice area A [mm 2 ] WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 17,7 17, [kg] with bellows 114,8 114, Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D E 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 [inch] Outlet b s 1 7 / / / / / 16 Height (H4) Standard H max / / / / / 2 [inch] Bellows H max / / / / / 16 Support brackets A 1 15 / / / / / 16 [inch] B 6 5 / / / / / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 1 5 / / / / / 16 E 31 / / / / / 32 P Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets LWN 48.1-E 1/57

72 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] Actual Orifice area A [mm 2 ] Body material: WCB 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 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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/58 LWN 48.1-E

73 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F Body material: CF8M to 8 F Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F P Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/59

74 Orifice Q Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X WC X X 1 p [bar] WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X X X 1 p [bar] Q CF8M T [ F] T [ C] p [psig] 1/6 LWN 48.1-E

75 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 ] Body material WCB Art.-No CF8M Art.-No Use 6 Q WC Art.-No. 3 x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 68 Use 6 Q Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 D E 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 [inch] Outlet b 9 1 / / / 2 s 2 11 / 16 Use 6 Q / / 16 Height (H4) Standard H max / 8 3 x / / 8 [inch] Bellows H max / / / 4 Support brackets A 14 9 / / / 16 [inch] B 8 9 / / / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 13 5 / / / 8 E 31 / / / 32 Code for lifting device Q Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets LWN 48.1-E 1/61

76 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 ] Body material: WCB 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 ,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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/62 LWN 48.1-E

77 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 6 Q x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 165 Use 6 Q to 8 F 8 3 x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 6 Q 8 3 x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 6 Q x Q Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/63

78 Orifice R Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X X WC X X 1 p [bar] WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X X X X 1 p [bar] R CF8M T [ F] T [ C] p [psig] 1/64 LWN 48.1-E

79 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 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 D E US Units Weight 487,3 487,3 61,8 61,8 [lbs] with bellows 57,2 57, Center to face Inlet a 9 7 / / / / 16 [inch] Outlet b 9 1 / / / / 2 s 2 11 / / / / 4 Height (H4) Standard H max / / / / 8 [inch] Bellows H max / / / / 8 Support brackets A 14 9 / / / / 8 [inch] B 8 9 / / / / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 13 5 / / / / 8 E 31 / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M R Support brackets LWN 48.1-E 1/65

80 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 ] Body material: WCB 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 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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/66 LWN 48.1-E

81 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F Body material: CF8M to 8 F Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F R Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/67

82 Orifice T Selection chart 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X WC X 1 p [bar] WCB WC6 T [ F] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X X 1 p [bar] CF8M T [ F] T [ C] T p [psig] 1/68 LWN 48.1-E

83 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 ] Body material WCB Art.-No CF8M Art.-No Use 8 T WC Art.-No. 3 x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 62 Use 8 T 1 62 Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 D E US Units Weight 632,8 632,8 [lbs] with bellows 657,1 657,1 Center to face Inlet a 1 7 / / 8 [inch] Outlet b s 2 7 / 16 Use 8 T / 16 Height (H4) Standard H max / 16 3 x / 16 [inch] Bellows H max / / 16 Support brackets A 18 1 / / 2 [inch] B C Ø 23 / 32 Ø 23 / 32 D 19 9 / / 16 E 31 / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M T Support brackets LWN 48.1-E 1/69

84 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 ] Body material: WCB 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 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: WC 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 The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/7 LWN 48.1-E

85 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 Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 65 Use 8 T x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 65 Use 8 T to 8 F 65 3 x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F 3 81 to 1 F 225 Use 8 T 1 3 x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 8 T x T Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. LWN 48.1-E 1/71

86 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/ " 3 2" H45 H46 H47 H5 H51 H52 H15 D 1" 6 2" H1 H17 H5 H51 H52 H / 2 " 15 2" H11 H12 H5 H51 H52 H / 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 H / 2 " 15 2" H11 H12 H5 H51 H52 H / 2 " 25 3" H12 H13 H5 H51 H52 H15 H / 2 " 3L 2" H45 H5 H51 H52 H15 F 1 1 / 2 " 3 2" H46 H47 H5 H51 H52 H / 2 " 15 3" H1 H17 H11 H12 H5 H51 H52 H15 H / 2 " 25 3" H12 H13 H5 H51 H52 H15 H / 2 " 3L 3" H45 H5 H51 H52 H / 2 " 3 3" H46 H47 H1 H5 H51 H52 H15 G 1 1 / 2 " 6 3" H1 H17 H11 H5 H51 H52 H / 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 H / 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

87 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 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 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 an additional option code is necessary: S1: bottom of the groove drilled. Groove and tongue for PN16 flanges refer to DIN 2512/LWN ) 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 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

88 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 X H65, H8, J18, J X H67, H8, J18, J51 CF1M X H65, H8, J18, J X H67, H8, J18, J51 WC X H65, H8, J18, J X H67, H8, J18, J51 LCB WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H8, J18, J X H67, H8, J18, J51 CF1M X H65, H8, J18, J X H67, H8, J18, J51 WC X H65, H8, J18, J X H67, H8, J18, J51 LCB WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 WC X H65, H X H67, H8 LCB X H65, H X H67, H8 WCB X S X S1 CF8M X S X S1 WC X S X S1 LCB X S X S1 WCB X S X S1 CF8M X S X S1 WC X S X S1 LCB X S X S1 WCB X S X S1 CF8M X S X S1 WC X S X S1 LCB X S X S1 WCB X S1 CF8M X S1 WC X S1 LCB X S1 1/74 LWN 48.1-E

89 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 X X X Class 15 x X X H68, H X H68, H X H68, H X H68, H X H68, H X H68, H X H68, H X 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

90 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, WC Material-No. D E Hardened stainless steel F G Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H Hardened J stainless steel K Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N Hardened P stainless steel Q R T 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 Material-No. D E 316L stellited F stellited G Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H L stellited J stellited K Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P 316L stellited stellited Q R T /76 LWN 48.1-E

91 Spare parts Disc (Item 7) Soft seal and O-ring (Item 7.4) Soft seal Disc (Item 7) Soft seal: Material 316L 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 X X X X X X X1 E X X X X X X X1 all F X X X X X X X1 G X X X X X X X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H X X X X X X1 J all X X X X X X1 K X X X X X X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L X X X X X X1 M X X X X X1 N X X X X X1 P all X X X X X1 Q X X X X1 R X X X X1 T X X X1 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 X X X X X X X1 E X X X X X X X1 all F X X X X X X X1 G X X X X X X X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H X X X X X X1 J all X X X X X X1 K X X X X X X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L X X X X X X1 M X X X X X1 N X X X X X1 P all X X X X X1 Q X X X X1 R X X X X1 T X X X1 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

92 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, WC Material-No. D E 316L F G Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H L J K Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P 316L Q R T 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 Material-No. D E 316L F G Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H L J K Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P 316L Q R T Nozzle design code: Class Standard Ring Joint Facing 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

93 Spare parts Stainless steel bellows (Item 15) and bellows conversion kits Bellows (Item 15) Material 316Ti 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 E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T 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 E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T 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 Stud 4, 8, 12 depends on valve size LWN 48.1-E 1/79

94 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 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 x 3 Ø 3 mm / 12 pieces Ø 3 mm pieces Ø 3 mm pieces Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Ø 3 mm pieces Ball (Item 61) Material 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 Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Ø 9 mm / Ø 15 mm Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Ø 15 mm /8 LWN 48.1-E

95 Spare parts Gasket Body / bonnet (Item 6), Split ring (Item 14) Gasket (Item 6) Material Graphite / 316, Graphite / 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 E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice WC Body material Flange rating class Other: X1 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T Type 526 Split Ring (Item 14) Material 316L 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 E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T LWN 48.1-E 1/81

96 Axial needle bearing (Item 69) Type 526 Axial needle bearing (Item 69) Material 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 E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T /82 LWN 48.1-E

97 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 F + G Lapping stamp no. 4, d 23 / orifice F + G H Lapping stamp no. 5, d 29 / orifice H J Lapping stamp no. 6, d 37 / orifice J K Lapping stamp no. 7, d 46 / orifice K L + M Lapping stamp no. 8, d 6 / orifice L + M N Lapping stamp no. 9, d 74 / orifice N P Lapping stamp no. 1, d 92 / orifice P Q + R Lapping stamp no. 12, d 125 / orifice Q + R T Lapping stamp no. 13, d 165 / orifice T 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

98 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

99 Approvals Approvals Orifice D E T Europe Coefficient of discharge K dr DIN EN ISO Approval No Z12/2/26 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 GOSGOTECHNADZOR S/G,455,81 GOST R L,343,579 Classification societies Homepage Bureau Veritas BV The valid certification number is changed with Det Norske Veritas DNV every renewal. Germanischer Lloyd GL Lloyd s register EMEA LREMEA Registro Italiano Navale RINA 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

100 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] ,5 28, ,5 6, ,5 126,5 161,5 Act. Orifice area A [mm 2 ] 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], , * ) 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

101 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] 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

102 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] ,5 28, ,5 6, ,5 126,5 161,5 Act. Orifice area A [mm 2 ] 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], , ,4 23,5 36,3 46,1 55,3 81, ,3 33,2 51,4 65,3 78, ,5 44,9 69,6 88, ,5 63,5 98, ,5 77, , , , , , , , * ) 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

103 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, , , 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

104 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] ,5 28, ,5 6, ,5 126,5 161,5 Act. Orifice area A [mm 2 ] 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, ,5 1,94 3,52 5,81 9,9 14,4 23,3 33,2 51,4 65,3 78, ,63 4,76 7,87 12,3 19,5 31,5 44,9 69,6 88, ,72 6,74 11,1 17,4 27,5 44,5 63,5 98, ,55 8,25 13,6 21,3 33,7 54,5 77, ,26 9,53 15,7 24,6 38, , ,88 1,7 17,6 27,5 43,5 7, ,44 11,7 19,3 3,1 47,7 77, ,95 12,6 2,8 32,5 51,5 83, ,43 13,5 22,3 34,8 55, 89, ,88 14,3 23,6 36,9 58,4 94, ,31 15,1 24,9 38,9 61,5 99, ,1 15,8 27,3 42,6 67, ,83 16,5 29,5 46, 72, ,5 17,8 31,5 49,2 77, ,1 19,1 33,4 52,2 82, ,8 2,2 35,2 55, 87, ,3 21,3 36,9 57,7 91, ,9 22,3 38,6 6,3 95, ,4 23,3 4,1 62,7 99, ,9 24,3 41,7 65, ,4 25,2 43,1 67, ,9 26,1 44,5 69, ,3 26,9 45,9 71, ,8 27,8 47,2 73, ,2 28,6 48,5 75, ,6 29,4 49,8 77, ,6 3,1 55,7 87, ,4 33,7 61, 95, , 36,9 65, ,5 39,8 7, ,9 42,6 74, ,3 45,2 78, ,8 47,6 86, ,1 52,2 93, ,2 56,4 99, ,3 6, ,2 63, , 67, ,7 7, ,4 73, , 76, ,5 79, ,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

105 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 25,2 41,5 64, ,9 3,2 49,7 77, ,6 34,8 57,4 89, ,1 38,9 64, ,3 42,7 7, ,3 46,1 76, ,2 49,3 81, , 52,2 86, ,6 55,1 9, ,7 6,3 99, ,6 65, ,3 69, ,8 73, ,1 77, ,4 81, ,5 85, ,6 88, ,6 92, ,5 95, ,4 98, , , , , , , , , , , , , , 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

106 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 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

107 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

108 Accessories and Options Caps and levers Subassembly item 4 Cap H2 Packed lever H a Plain lever H3 Test gag 12 Cap H2: J7 Packed lever H4: J b BLOCKED Remove after testing 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

109 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 Gr Gr CF8M Steel 316L Ti 316Ti B8M Steel 316L Steel 316Ti Gr Steel A2/Poly H 8M Viton - " - Graphite - " - Carbon steel Carbon steel - " - - " Chrome steel L Carbon steel - " Carbon steel Carbon steel 316L Steel Steel " - - " - 8M Ti 316Ti 316Ti Plastic - " - Plastic Plastic Plastic Plastic Plastic - " - - " - - " - - " - - " L 316L 316L 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

110 Accessories and Options Caps and levers bolted Subassembly item 4 Bolted Cap H1 Bolted lifting device H Test gag Bolted cap H1: J7 Bolted lifting device H6: J BLOCKED Remove after testing Options Discription of the test gag please refer to page 99/2. 99/4 LWN 48.1-E

111 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 Gr CF8M Steel 316L CF8M CF8M Carbon steel 316Ti Steel " H 8M Graphite Graphite - " - - " Chrome steel 316L Gr CF8M Graphite / Graphite / Graphite / 316L Graphite / 316L 316Ti 316Ti Carbon steel 316L Steel " - 8M Ti 316Ti Steel Steel B8M B8M H 2H 8M 8M Plastic Plastic Plastic Plastic - " - - " - - " - - " 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

112 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 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 / 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 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, hardened Hardened stainless steel 4 HRC LWN Harding procedure HRC EN 1272, SA L 215 HBW EN 1272 Table HRC 1) EN 1272, stellited SA L stellited 35 HRC Manufacturers specification 4 HRC Options HBW: BRINELL hardness acc. DIN EN ISO / HRC: ROCKWELL hardness acc. DIN EN ISO ) Rockwell hardness values below 2 HRC are not allowed according to DIN EN ISO Lower, fictitious values were created for better comparison. 99/6 LWN 48.1-E

113 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 hardened stellited stellited stellited Hardened stainless steel 316L stellited 316L stellited 316L stellited L 316L 316L 316L Ti 316Ti 316Ti 316Ti Materials Nozzle Item 5 Flange rating class Body material: WCB 1.619, LCB Nozzle material Standard stellited stellited 316L 316L stellited 316L stellited Stellited stellited stellited stellited 316L stellited 316L stellited 316L stellited Option code L62 * * Body material: WC Nozzle material Standard stellited stellited stellited 316L stellited 316L stellited 316L stellited Stellited stellited stellited stellited 316L stellited 316L stellited 316L stellited Option code * * * Body material: CF8M Nozzle material Standard stellited 316L 316L 316L stellited Stellited stellited stellited 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

114 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 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

115 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 L 316L L 316L 4 O-ring See soft seal selection table page 99/1 See soft seal selection table page 99/1 5 Nut M 8M Materials Disc with sealing plate Item Component Steel Stainless steel 1 Disc with lifting aid 3 Retainer L 316L L 316L 4 Sealing plate See soft seal selection table page 99/1 See soft seal selection table page 99/1 5 Nut M 8M Options LWN 48.1-E 99/9

116 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 J Parafin oil, silicone oil and grease, water and waterbased solvents, refrigerants, ozone NBR Buna-N (Nitrile-Butadiene) N J Hydraulic oil, vegetable and animal grease and oil EPDM Buna-EP (Ethylene-Propylene- Dine) D J 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 J 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 J T J G J A J 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

117 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 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 D G Kel-F D T Teflon D T Material selection Sealing plate Set pressure p [bar g] [psig] J49 Vespel SP-1 J48 PCTFE Kel-F J44 PTFE-FDA Teflon [ F] [ C] 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

118 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

119 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 / 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/ L L L Ti 4, 8, 12 depends on valve size B8M 2, 3 depends on valve size Graphite / Graphite / LWN 37.5 Options LWN 48.1-E 99/13

120 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 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 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 WC L stellited 316L stellited WCB L L 1.712, High temperature alloy steel B M 99/14 LWN 48.1-E

121 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 (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: Packed lever H4 or bolted H6 For assembly and adjustment refer to LESER works standard LWN 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

122 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 F 2 2 H 3 3 J 4 4 N 6 6 Q 8 8 T 1 1 E / 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 CF8M CF8M WCB 1.619, WCB 1.619, WCB 1.619, WCB 1.619, CF8M CF8M CF8M CF8M Options Heating jacket Connections Slip on flange DIN Slip on flange ANSI B16.5 Couplings DIN 2986 DN 15, PN , Ti, 316L DN 25, PN , Ti, 316L 1 / 2 ", class 15 1", class L L G 3 / Ti G 3 / Ti Bonnet spacer L 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

123 Accessories and Options Heating jacket Metric Units Valve size 1 D / 2 F 2 2 H 3 3 J 4 4 N 6 6 Q 8 8 T 1 1 E / 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 B C D E Slip on flange DN [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 C US Units Series 526 Valve size 1 D / 2 F 2 2 H 3 3 J 4 4 N 6 6 Q 8 8 T 1 1 E / 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 B / / / / 2 C 3 3 / / / / / / 2 D 7 1 / / 8 E 4 3 / / / / / / 2 12 Slip on flange DN 1 / 2 1 / 2 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 F Options LWN 48.1-E 99/17

124 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 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

125 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 CF8M L 316L A4 Steel Ti L L 316L L PFTE 15% glas - " Stainless steel Stainless steel Viton Viton - " - - " - Options LWN 48.1-E 99/19

126 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