Series 3250 Globe Control Valve Type 3251 Pneumatic Control Valves Type 3251/3271 and Type 3251/3277

Transcription

1 Series 350 Globe Control Valve Type 35 Pneumatic Control Valves Type 35/37 and Type 35/377 Application Control valve for process engineering applications with high industrial requirements. s ½ 8 (5 00 mm) Pressure ratings ANSI Class Temperatures F ( C) These valves comply with ANSI, ASME and ASTM standards The control valves consist of a body with trim, bonnet, yoke and a pneumatic actuar, with optional metal bellows or insulating extension. The valves may be also equipped with electric, electrohydraulic, or hand-operated actuars, as well as control accessories and other instrumentation. Features Modular design, rugged and heavy duty construction, full range of body and trim materials Field retrofittable metal bellows seals and extension bonnets Self-adjusting, live-loaded PTFE/Carbon V-ring stuffing box Excellent dynamic response and high trim stability V-port asymetric port-guided plugs (above Cv 5) Self-locking seats, exchangeable for various Cv values Low profile, reversible, multi-spring/rolling diaphragm actuar NAMUR (IEC 534-6) accessory mounting standard Complete selection of actuar options, positioners and control accessories Standard Versions Body materials ASTM Cast A 6 WCB, A 7 WC6, A 35 CF8M End connections Raised-Face Flanges Packing PTFE/Carbon V-ring spring-loaded/self-adjusting, temperature range: F (0 0 C) Trim Equal percentage characteristic, metal--metal seal Options Body Materials A 7 WC9, A 35 LCB, A 35 CF8, Hastelloy C, Monel, and others Packing Adjustable, high-temperature (HT) packing for temperatures from F (0 350 C) and others Extension Bonnet For extreme temperatures from F ( C) Metal bellows seal For complete seal between process and atmosphere, with test connection and backup PTFE packing Characteristic Linear (quick-opening on request) Trim materials Stellite, Hastelloy C, Monel, Tungsten Carbide, ceramic and others Plug seal PTFE soft seal or lapped-in metal seal Pressure balanced version For high differential pressures Class 500 and 500 On request End connections RTJ, socketweld and buttweld ends Flow divider For noise level reduction, see Data Sheet T 8 Heating jacket, micro trim, versions for sour gas according NACE Details on request Fig. Type 35/37 Pneumatic Globe Control Valve Actuar Combinations Type 35/37 (Fig. ) With Type 37 Pneumatic Actuar For operation with or without yoke-mounted positioner, details see T 830 Type 35/377 With Type 377 Pneumatic Actuar For integral positioner/accessory mounting according SAMSON Valve Management System, details see T 83 DIN Versions See Data Sheet T 5 EN JIS On request Associated Information Sheets Valves T 00 Actuars T 8300 Edition August 00 ANSI Version Technical Data Sheet T 5

2 Fail-safe action Depending on the arrangement of the diaphragm plate and springs within the actuar, the control valve offers two different fail-safe actions upon loss of air supply (see Technical Data Sheets T 830 and T 83 for details): Actuar extends stem (fail-close) The actuar springs close the valve upon loss of air supply. Actuar retracts stem (fail-open) The actuar springs open the valve upon loss of air supply. Notes on the differential pressure tables 4a 6d The differential pressure tables listed have been prepared under the following conditions: Process medium flow directed against the closing direction of the valve plug (flow--open valve) Version with PTFE/Carbon V-ring stuffing box With the maximum differential pressures specified, the leakage rates specified in Table are not exceeded. The differential pressure specified can be limited by the Pressure-Temperature Diagram. For versions with soft-sealing or lapped-in plugs, metal bellows seal, balanced plug with graphite seal ring or p 0 psi (0 bar), consult SAMSON. Fig. 3 Type 35 Globe Valve with buttweld ends and balanced valve plug Test connection Flow divider Type St I Fig. Type 35 Globe Valve with Type 37 Pneumatic Actuar Fig. 4 Type 35 Globe Valve with St I Flow Divider and additional metal bellows seal with test connection T 5

3 Table Technical Data Nominal Valve Size... 8 in Class 600 Body material, ASTM (also see Table ) Carbon steel A 6 WCB High-Temperature Carbon steel A 7 WC6 High-Temperature Carbon steel A 7 WC9 Low-Temperature Carbon steel A 35 LCB Flanges RF (raised face) and RTJ (ring-type joint) End connections Welding ends Socketweld, buttweld, according ANSI B6., B6.5 Pressure Rating Class , according ANSI B6.34 ) Stainless steel A 35 CF8M Seat/Plug seal Metal sealing, soft sealing or lapped-in metal sealing Packing Design V-ring, spring-loaded, self-adjusting or adjustable Flow Direction (standard) Flow Open (FTO) Seat bore diameter, rated travel, Cv/Kvs See Table 3 Characteristic Equal percentage, linear or quick-opening Terms for valve sizing according ISA-75.0 and IEC , parts - and - F L=0.95, X T=0.75 (at 75% rated travel) Rangeability 50: Dimensions and Weights See Tables Temperature ranges in F (C) Max. operating pressures according Pressure-Temperature Diagrams (see Information Sheet T 00-) Body without insulating section F (0 0 C) Up 660 F (350 C) with high-temperature packing Body with Valve plug ) Standard Balanced Insulating or bellows section Metal sealing Soft sealing PTFE ring Graphite ring F ( C) F ( C) F ( C) F ( C) F ( C) F ( C) F ( C) Leakage rate class according ANSI/FCI F70- (IEC Part 4) Metal sealing IV Standard Soft sealing VI Valve plug Lapped-in metal IV-S and upwards: IV-S Balanced Metal sealing With PTFE balancing seal: IV With graphite balancing seal: III ) Up Class 500 on request. ) Only in combination with a suitable body material F ( C) Metal-sealed plug Fig. 5 Trim versions PTFE soft-sealed plug Flow divider St I, for cavitation protection with liquids and noise reduction with liquids, gases and steam Flow divider St III, for noise reduction with gases and steam 3 T 5

4 Fig. 6 Type 35 Globe Valve components Metal bellows seal module 7 PTFE/Carbon V-ring packing Table Materials (WN = Material Number according DIN) Item Description ASTM/AISI Material Description Body Carbon Steel Cast A 6 WCB High-Temperature Carbon Steel Cast A 7 WC6 Cast A 7 WC9 Low-Temperature Carbon Steel Cast A 35 LCB Stainless Steel Cast A 35 CF8M Bonnet A 8 F A 350 LF A 8 F36 3 Yoke A 395 (WN ) 4 Seat ) AISI (WN.06) AISI 36Ti (WN.457) 5 Plug ), ) AISI (WN.06) AISI 36Ti (WN.457) 6 Plug stem AISI (WN.06) AISI 36Ti (WN.457) 7 Guide bushing AISI 4B (WN.4) Hastelloy C 8 Packing nut AISI 36Ti (WN.457) with carbon insert (guide) 9 Coupling nut AISI 430F (WN.4) 0 Counter nut AISI 430F (WN.4) Packing spring AISI 30 (WN.430) Packing washer AISI 36Ti (WN.457) 3 Body stud A93 B7 A93 B8M Cl. 4 Hex nut A94-H A94-7 A94-H A94-8M 5 V-ring packing PTFE with carbon (others on request) 7 Gasket AISI 36Ti (WN.457) 9 Packing bushing AISI 36Ti (WN.457) Extension A 8 F A 350 LF A 8 F36 3 Hex bolt A93 B7 A93 B8M Cl. 33 Hex nut A94-H A94-7 A94-H A94-8M 37 Bellows insert AISI 36Ti (WN.457) 4 Bellows retaining nut AISI 36Ti (WN.457) 4 Test connection nut AISI 36Ti (WN.457)...84 Label, indicar, bracket, screw, nameplate, rivets AISI 304 (WN.430) ) Seats and metal-sealing plugs also available with Stellited facing or complete Stellite 6 plug (Seat bore 48 mm). Other materials (Monel, Hastelloy C, Tungsten Carbide) also available ) Soft-sealed plug version, with PTFE-glass fiber composite. Pressure balanced and versions with flow divider, materials on request. 4 T 5

5 Table 3 C v and K vs values Table 3a Overview C v C v I C v III Seat ID, in Travel in 0... K vs K vs I K vs III Seat ID, mm Travel mm Table 3b Standard versions (without flow divider) Versions in shaded fields also available with balanced valve plugs C v K vs Size in mm Table 3c Versions with St I flow divider (C v I/K vs I) Versions in shaded fields also available with balanced valve plugs C v I K vs I Size in mm Table 3d Versions with St III Flow Divider (Cv III/K vs III) Versions in shaded fields also available with balanced valve plugs C v III K vs III Size in mm T 5

6 Table 4 Differential pressure tables Unbalanced valve plugs Values specified in the shadowed columns correspond the standard application, i.e. rated travel Differential pressures specified in the white columns apply maximum pre-tensioned springs. Differential pressures enclosed in parentheses refer mid-travel position. Observe the notes on the differential pressure tables, listed on page. Table 4a Permissible differential pressures p for valves with metal sealing and without metal bellows Pressures in psi For actuars employing fail-safe action: Actuar extends stem Valves closed at supply pressure 0 psi Bench range (psi) for actuars with effective area of (in /cm ) 434/ x434/x0 (...8) Required supply pressure (psi) Actuar C v Kvs in mm in cm / / (...8) (4...36) 7/ (4...36) ( ) (36...5) (36...5) ( ) (9...4) Final spring value + 3 psi p with p = 0 psi (7...34) ( ) ( ) (...30) ( ) (50...6) ( )...45 (7...38) (537) (346) (4770) (3654) (5365) (50) (5) (346) (4756) (3654) (5365) (50) (909) (870) (84) (75) (304) (365) (48) (600) (44) (885) (445) (3) (7) (76) (73) (450) (87) (870) (47) (443) (9) (47) (76) (4) (7) (56) (707) (76) (87) (7) (358) (45) (46) (555) (7) (356) (449) (46) (554) (7) (465) (584) (703) (36) (45) (539) (6) (464) (584) (703) (36) (449) (539) x434 x0 (45) (98) (68) (6) (7) (899) (079) (56) (3) (4) (487) (49) (3) (374) (55) (3) (4) (487) (49) (3) (37) x434 x0 (30) (644) (9) (974) (499) (63) (745) (87) () (6) (7) (39) (74) (09) x434 x0 (74) (359) (45) (545) (78) (348) (47) 6 T 5

7 Table 4b Permissible differential pressures p for valves with metal sealing and without metal bellows Pressures in bar For actuars employing fail-safe action: Actuar extends stem Valves closed at supply pressure 0 bar Bench range (bar) for actuars with effective area of (in /cm ) 434/ x434/x0 (0.8...) Required supply pressure (bar) Actuar C v Kvs in mm in cm / / (0.8...) (.6...4) 7/ (.6...4) ( ) ( ) ( ) ( )...8 (.5...6) Final spring value + 0. bar p with p = 0 bar ( ) ( ) ( ) (.55...) ( ) ( ) ( ) ( ) (06) (7) (39) (5) (370) (0) (05) (7) (38) (5) (370) (0) (6.7) (9) (96) (50) () (50) (84) (4.4) (85.8) (30) (99.7) (47) (66) (88) (49.) () (6) (9) (55) (30.6) (6.9) (79.) (8.) (97.3) (8.8) (38.8) (48.8) (50.) (60.) (.9) (4.7) (3.) (3.9) (38.3) (.8) (4.6) (3) (3.8) (38.) (5.7) (3.) (.3) (48.5) (4.9) (3.) (37.) (5.6) (3) (.3) (48.5) (4.9) (3) (37.) x434 x0 (3.) (64) (.6) (97) (49.8) (6) (74.4) (0.8) (.) (7.9) (33.6) (7.) (.5) (5.8) (0.7) (.) (7.9) (33.6) (7.) (.5) (5.7) x434 x0 (.4) (44.4) (55.8) (67.) (34.4) 43 (5.4) (6) (.4) (5.6) (8.8) (9.6) () (4.4) x434 x0 () (4.8) (3.) (37.6) (9.) (4) (8.8) 7 T 5

8 Table 5 Permissible differential pressures p for valves with unbalanced plug with metal sealing and without metal bellows seal For actuars employing fail-safe action: Actuar retracts stem Valves open at supply pressure 0 bar Table 5a Pressures in psi Table 5b Pressures in bar 54 / 350 Bench range in psi/bar 08 / for actuars with effective 7 / 0 area (in /cm (3... 9) ( ) ): 434 / 0 x434 / x0 Required supply pressure (psi/bar) Actuar C v Kvs p with p = 0 psi p with p = 0 bar in mm in cm (537) (355) (50) (06) (45) (0) (5) (3538) (50) (05) (44) (0) (906) (7) (60) 50 (6.5) (46) () (0) (594) (7) (68) 4307 (4) (97) (85) (97) (70) (638) (33) 4988 (49) (3) (6) (344) (44) (09) (957) 33 (30.4) (7) (35) (6) (7) (633) (8) (943) (8.7) (43.7) (84) (34) (7) (3) (775) (3) (.8) (7.8) (53.5) (85) (68) () (773) (3) (.6) (7.7) (53.3) (85) (6) (55) (0) 595 (5.6) (36.) (69) (0) (4) (53) (0) 595 (5.5) (36.) (69) (0) x434 x0 (449) (044) (00) 390 (3) (7) (38) (0) (56) (36) (693) 08 (0.8) (5) (47.8) (76.4) (56) (36) (693) 06 (0.7) (5) (47.8) (76.3) x434 x0 (30) (75) (386) 04 (.4) (50) (95.6) (5) (85) (0) (388) (60) (5.9) (3.9) (6.8) (4.8) x434 x0 (7) (3) (777) 4 (.8) (7.8) (53.6) (85.6) 8 T 5

9 Table 6 Differential pressure tables Balanced valve plugs with PTFE balancing seal (without bellows) Values specified in the shadowed columns correspond the standard application, i.e. rated travel Differential pressures specified in the white columns apply maximum pre-tensioned springs. Fail-safe action: Actuar extends stem Valve closed at supply pressure 0 psi (0 bar) Fail-safe action: Actuar retracts stem Valve closed at required supply pressure Tables 6a and 6b Permissible differential pressures p Pressures in psi Table 6a Actuar extends stem Nominal bench range (psi) with actuar (in /cm ) 08/700 7/0 434/0 x434/x (4...36) ( ) (36...5) Table 6b Stem retracts (6... 8) Required supply pressure psi Final spring value + 3 psi Actuar C v Kvs p with p = 0 psi in mm in cm (50) (50) (50) (4379) (554) (304) (50) (50) (50) (50) (43) (548) (36) (50) (50) (50) (50) (448) (58) (3088) (50) (653) (0) (97) (300) (563) (50) (50) (50) (50) (34) (43) (534) (53) (50) x434 x0 (50) (50) (50) (5046) (50) (50) (50) (50) (50) (3393) (49) (505) (494) (50) x434 x0 (50) (50) (50) (4988) (50) (3335) (434) (533) (4) (50) x434 x0 (50) (50) (50) (4843) (50) 9 T 5

10 Tables 6c and 6d Permissible differential pressures p Pressures in bar Table 6c Actuar extends stem Bench range (bar) with actuar (in /cm ) 08/700 7/0 434/0 x434/x (.6...4) ( ) ( ) Table 6d Stem retracts ( ) Required supply pressure bar Final spring value + 0. bar Size Actuar C v Kvs p with p = 0 bar in mm in cm (0) (0) (0) (30) (38) () (0) (0) (0) (0) (98) (378) (8) (0) (0) (0) (0) (93) (373) (3) (0) (4) (45) (8.6) (07) (363) (0) (0) (0) (0) (36) (98) (36) (74) (0) x434 x0 (0) (0) (0) (348) (0) (0) (0) (0) (0) (34) (96) (359) (7) (0) x434 x0 (0) (0) (0) (344) (0) (30) (9) (354) (67) (0) x434 x0 (0) (0) (0) (334) (0) 0 T 5

11 Table 7a Dimensions of standard version in inches Globe Valve Size in 8 Length L H for actuar H Class 50 in Class 300 in Class 600 in Class 900 in cm Class 50/600 in Class 900 in cm Class 50/600 in Class 900 in cm Class 50/600 in Class 900 in cm Class 50/900 in Class 50 in Class 300/600 in Class 900 in Pneumatic Actuar Size x 0 in Diaphragm D in H ) in H3 ) in Thread M 30 x.5 M 60 x.5 M x a (with Type 37 Actuar) NPT 3 8 NPT 3 4 NPT a (with Type 377 Actuar) NPT 3 8 ) Actuar 350 cm without lifting ring ) Minimum clearance for actuar disassembly Table 7b Weights of standard version in lbs Globe Valve Size in 8 Weight, without actuar Class 50/300 lbs Class 600 lbs Class 900 lbs Pneumatic Actuar Size x 0 in x 434 Weight, Type 37 Without lbs With handwheel lbs Only with side-mounted handwheel, see T 830 Weight, Type 377 Without lbs With handwheel lbs H3 ØD a H3 H ØD a H 4" ( mm) a H4 H H H H L L L Type 35/37 Type 35/377 Type 35 with insulating or bellows section T 5

12 Table 8a Dimensions of standard version in mm Globe Valve Size in 8 mm Class 50 mm Length L Class 300 mm Class 600 mm Class 900 mm cm Class 50/600 mm Class 900 mm H for 700 cm Class 50/600 mm Class 900 mm actuar 0 cm Class 50/600 mm Class 900 mm cm Class 50/900 mm Class 50 mm H Class 300/600 mm Class 900 mm Pneumatic Actuar Size x 0 cm Diaphragm D mm H ) mm H3 ) mm Thread M 30 x.5 M 60 x.5 M x a (with Type 37 Actuar) NPT 3 8 NPT 3 4 NPT a (with Type 377 Actuar) NPT 3 8 ) Actuar 350 cm without lifting ring ) Minimum clearance for actuar disassembly Table 8b Weights of standard version in kg Globe Valve Weight, without actuar Size in 8 mm Class 50/300 kg Class 600 kg Class 900 kg Pneumatic Actuar Size x 0 cm x 0 Weight, Type 37 Without kg With handwheel kg 3 7 Only with side-mounted handwheel, see T 830 Weight, Type 377 Without kg 6 With handwheel kg 7 3 H3 ØD a H3 H ØD a H 4" ( mm) a H4 H H H H L L L Type 35/37 Type 35/377 Type 35 with insulating or bellows section T 5

13 Table 9a Dimensions and weights of standard version with insulating section in inches and lbs Without actuar Class H4 for actuar Class 900 H4 for actuar Weight, without actuar for 8 54 in /350 cm in in /700 cm in in /0 cm in in /0 cm in in /350 cm in in /700 cm in in /0 cm in in /0 cm in Class lb Class 900 lb Table 9b Dimensions and weights of standard version with metal bellows in inches and lbs Without actuar 8 Class 50 H4 for actuar 54 in /350 cm in in /700 cm in in /0 cm in in /0 cm in Class 300/600 H4 for actuar 54 in /350 cm in in /700 cm in in /0 cm in in /0 cm in Class 900 H4 for actuar 54 in /350 cm in in /700 cm in in /0 cm in in /0 cm in Class 50/300 lb 794 Weight, without Class 600 lb actuar for Class 900 lb Table 0a Dimensions and weights of standard version with insulating section in mm and kg Without actuar in 8 mm Class H4 for actuar 54 in /350 cm mm in /700 cm mm in /0 cm mm in /0 cm mm Class 900 H4 for actuar 54 in /350 cm mm in /700 cm mm in /0 cm mm in /0 cm mm Weight, without Class kg actuar for Class 900 kg Table 0b Dimensions and weights of standard version with metal bellows in mm and kg Without actuar Class 50 H4 for actuar Class 300/600 H4 for actuar Class 900 H4 for actuar in 8 mm in /350 cm mm in /700 cm mm in /0 cm mm in /0 cm mm in /350 cm mm in /700 cm mm in /0 cm mm in /0 cm mm in /350 cm mm in /700 cm mm in /0 cm mm in /0 cm mm T 5

14 Installation Arbitrary mounting orientation. If the mounting orientation is inclined, the actuar and valve must be supported. Observe the clearance is adequate allow actuar, bonnet and plug removal (H3 in the table of dimensions). Direction of flow as indicated by the arrow on the valve body. Registered Trade Marks Monel, Hastelloy, and Stellite are referred within this publica- -tion with the understanding that the names are Registered Trade Marks of their respective owners, which include Cabot Wrought Products, International Nickel Co., Carpenter Technology, or the rightful owner, in the past as well as in future cases. Selection and Sizing of Control Valve. Calculate the Cv (Kv) value according ISA S75.0 or DIN IEC Select the nominal size and Cv (Kvs) value according Table Determine the permissible differential pressure p according Tables 4 and Select the valve body material according Tables and and the Pressure-Temperature Diagrams in the Information Sheet T Select options and accessories according Tables and. Ordering information Globe Control Valve Type Body material ASTM... According Table Pressure rating ANSI Class... End connections: Flanges/welding ends Cv /Kvs value... Characteristic... Options/Special version... Actuar: Type Ordering information 5) Fail-safe position Operating conditions ) : Process fluid 3) Flow rate 4) Inlet pressure Outlet pressure 4) Temperature Maximum shuff p for actuar sizing Air/power supply available for actuar, max./min. Accessories: Positioner, Switches, Transmitter, Solenoid valve, Filter/regular, Bypass, Volume/pressure amplifier, Lockup relay Type Ordering information 5) Tubing and fittings type/material Other instrumentation: Controllers, Sensors, Transmitters, Transducers, Converters Type Ordering information 5) Notes: ) If nominal size or Cv/Kvs value unknown, specify operating conditions ) Specify system of units, pressures: specify gauge or absolute. Provide minimum, normal, and maximum values, where applicable. Gases, vapors: specify flow rate under standard or actual conditions 3) Non-standard process fluids, specify additionally: Density, Specific gravity, or Molecular weight Liquids: Vapor pressure, Critical pressure, Viscosity Gases, Vapors: Ratio of specific heats, Compressibility facr 4) Or, specify required valve flow coefficient Cv, Kvs 5) Ordering information per the applicable Technical Data Sheet. Specifications subject change without notice. SAMSON CONTROLS INC Riviera Drive Markham Ontario Canada L3R 5J7 Tel. (905) Telefax (905) SAMSON CONTROLS INC. 4 Cedar Boulevard Baywn Texas USA Tel. (8) Telefax (8) T 5 T 5CA