Cryogenic Service Valves

Transcription

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2 Cryogenic Service Valves Superlok cryogenic valves are used in many industries in a broad range gas service such as oxygen, nitrogen, argon and more. The valves incorporate specialized materials that maintain resiliency and resist cracking when exposed to cryogenic media. These higher performance materials provide greater sealability, preventing ingress of moisture which can result in abrasion and potential damage to related equipment. iquefied Boiling Point iquefied Boiling Point Gases 0 0 Gases 0 0 Ammonia (NH3) Oxygen (O2) Propane (C3H8) Argon (Ar) Carbon Dioxide (CO2) Air Acetylene (C2H2) Nitrogen (N2) Ethylene (C2H4) Neon (Ne) Methane (CH4) Hydrogen (H2) Natural Gas (NG) Helium (He) Cryogenic Valve Applications Superlok cryogenic valves are available in a variety of materials. Material selection is critical to ensure suitability for specific services. Refer to the table below for the minimum working temperature of body materials. Superlok body materials are subjected to low temperature impact tests according to standard requirements. For valves with working temperature lower than -100, the body, bonnet, and stem must be subjected to cryogenic treatment after machining. The ball and seat sealing face are subjected to cryogenic treatment hard alloy spray welding/overlay welding. Then grinding and assembly is carried out to ensure the adaptability of materials under low temperature. In addition, the packing, gasket, bolt and nut are made of materials suitable for low temperature service conditions. Forging Casting Material Minimum Temperature Material Minimum Temperature ASTM A350 F2-46 ASTM A352 CB ASTM A352 CC ASTM A350 F5-59 ASTM A352 C1-59 ASTM A350 F9-73 ASTM A352 C2-73 ASTM A350 F3-101 ASTM A352 C3-101 ASTM A182 F ASTM A351 CF8-254 ASTM A182 F ASTM A351 CF8M -254 ASTM A182 F ASTM A351 CF3-254 ASTM A182 F ASTM A351 CF3M of 11

3 Construction - Ball & DBB Valves Extended bonnets Gland packing is located away from cold area in cryogenic and low temperature systems. Valve operator is accessible in high temperature applications with pipe lagging. Extended stem also allows operation through bulk heads and other obstacles. Cavity pressure relief Used for liquid gas service and other applications where body cavity pressure may increase. Three variations are available: A small hole in the throat of the upstream port allows the cavity to vent to the upstream side, making the valve unidirectional. The hole is fitted with a relief valve for bi-directional operation. Self-relieving seats: the unique seat relieves excess pressure inside the cavity of the valve. ocking devices On manual valves, bolted plates allow all ball valves to be padlocked in the fully open or closed position. On valves with gear operators, locking devices are integral. Interlocking systems ensure correct sequencing of any number and combination valves. Manual or motor operated Pneumatic, electric or hydraulic. Uni-/bi-direction Double block and bleed design Seat/sealing materials Various seat materials are available ranging from soft materials suitable for temperature down to 196 C (-327 F) to metal seats for aggressive and corrosive process media up to 500 C (932 F) constant temperature. Construction - Globe & Gate Valves Seat/sealing materials Various seat materials are available ranging from soft materials suitable for temperature down to -196 C (-327 F) to metal seats for aggressive and corrosive media up to 850 C (1562 F) constant temperature. Extended bonnets Gland packing is located away from cold area in cryogenic and low temperature systems. Valve operator is accessible in high temperature applications with pipe lagging. Extended stem also allows operation through bulk heads and other obstacles. Cavity pressure relief Not needed. ocking devices A locking device allows all Globe Valves to be padlocked in the fully open or closed position. Actuated operation Available with electric, pneumatic or hydraulic actuators. All actuated valves are factory tested before shipping. 3 of 11

4 Cryogenic Valve Testing All valves are factory tested prior to shipment to ensure shut off integrity, torque values, and simulated cryogenic conditions are according to British Standard of 11

5 Ball Valve Series Designed for long life and easy servicing Specifications Valve size: top entry: 1/2~6 inches three-piece: 1/2~2 inches Pressure class: ASME class 150 to class 1500 End connection: butt weld, socket weld, threaded flanged or a combination. Temperature: down to -196 C Bolted extension bonnet. Blow-out proof stem. Fire Safe design. Wall thickness design: ASME B16.34 Inspection and test: BS6364, API 598 End flange dimension: ASME B16.5 Butt weld end dimension: ASME B16.25 Socket weld end dimension: ASME B Face-to-face and end-to-end: ASME B16.10 Double Block & Bleed Valves Designed for long life and easy servicing Specifications Valve size: 1/2~3 inches Pressure class: ASME Class 150 to Class 1500 Valve type: Ball-Ball-Needle, Needle-Needle-Needle. Bore size: Full Bore, Reduced Bore, 10mm, 14mm. End connection: Flanged-Threaded, Flanged-Flanged. Temperature: down to -196 C Floating and trunnion ball design. Bolted extension bonnet. Blowout proof stem. Fire Safe design. Wall thickness design: ASME B16.34 Inspection and test: BS 6364, API 598 End flange dimension: ASME B16.5 Face-to-face and end-to-end: manufacture standard. 5 of 11

6 Top Entry Ball Valves Material of Construction NO. PART IST MATERIA 1 BODY ASTM A351-CF8M 2 BONNET ASTM A351-CF8M 3 BA ASTM A351-CF8M 4 STEM ASTM A SEAT PCTFE 6 SEAT RETAINER ASTM A U-CUP SEA VIRGIN PTFE+SS316 8 SEAT HODER ASTM A BACK UP SEAT RING ASTM A SPRING INCONE X BOTTOM THRUST WASHER PCTFE 12 GASKET GRAPHITE+SS UPPER THRUST WASHER PCTFE 14 TURUST BEARING PCTFE 15 STEM WASHER ASTM A PACKING GRAPHITE 17 GAND ASTM A GAND FANGE ASTM A FANGE BOT ASTM A320-B8 20 FANGE BOT NUT ASTM A BONNET BOT ASTM A320-B8 22 BONNET BOT NUT ASTM A194-8 Table of Class 150 BW FG BW FG 15 1/ / / / Class 300 BW FG BW FG 15 1/ / / / Class 600 BW FG BW FG 15 1/ / / / All dimensions in millimeters unless specified as inch. Dimension are for reference only, subject to change. 6 of 11

7 3-Piece Ball Valves Table of Class 150, 300 DN NPS SW H W Weight kg 15 1/ / / / Class 800 DN NPS SW H W Weight kg 15 1/ / / / Material of Construction Class 600 DN NPS SW Weight kg 15 1/ / / / Class 900 DN NO. DESCRIPTION MATERIA 1 BODY ASTM A182-F316 2 BODY CAP ASTM A182-F316 3 BA ASTM A STEM ASTM A BODY BOT NUT ASTM A BA SEAT PCTFE 7 BODY BOT ASTM A320-B8 8 PACKING GAND ASTM A BAR HANDE A351 CF8M 10 BUSHING PCTFE 11 GASKET GRAPHITE 12 BONNET BOT / NUT ASTM A320-B8/A BONNET SEA PCTFE 14 BONNET ASTM A182-F STOP PIN SS BONNET FANGE ASTM A PACKING GRAPHITE 18 STUD BOT / NUT ASTM A320-B8/A OCKING DEVICE SS GASKET GRAPHITE 21 NAME PATE STAINESS STEE NPS SW H H W W Weight kg 15 1/ / / / Class 1500 DN NPS SW H W Weight kg 15 1/ / / / All dimensions in millimeters unless specified as inch. Dimension are for reference only, subject to change. 7 of 11

8 Globe Valve Series Designed for long life and easy servicing Specifications Valve size: 1/2~6 inches Pressure class: ASME class 150 to class 600 End connection: butt weld, socket weld, threaded, flanged or combinations. Temperature: -196 C to 850 C (-327 F to 1562 F) Standard inclusion of a back seat facility for ease of maintenance. Bolted extension bonnet. Inside or outside screw stem and Fire Safe design. Non-rotating and self aligning stem disc construction. Bubble tight shut-off metal seat design. Wall thickness design: ASME B16.34 Inspection and test: BS6364, API 598 End flange dimension: ASME B16.5 Butt weld end dimension: ASME B16.25 Face-to-face and end-to-end: ASME B16.10 Gate Valve Series Designed for long life and easy servicing Specifications Valve size: 1/2~6 inches Pressure class: ASME class 150 to class 600 End connection: socket weld, threaded. Temperature: -196 C to 850 C (-327 F to 1562 F) Bolted extension bonnet. Inside or outside screw stem. Non-rotating and self aligning stem disc construction. Bubble tight shut-off metal seat design. Wall thickness design: ASME B16.34 Inspection and test: BS6364, API 598 Socket weld end dimension: ASME B16.11 Face-to-face and end-to-end: ASME B of 11

9 Globe Valves Table of Material of Construction NO. DESCRIPTION MATERIA 1 BODY ASTM A182-F316 2 DISC ASTM A STEM ASTM A GASKET GRAPHITE 5 BONNET ASTM A182-F316 6 BONNET BOT A320-B8 7 GAND PACKING GRAPHITE 8 GAND ASTM A GAND FANGE ASTM A182-F EYE BOT PIN ASTM A EYE BOT A320-B8 12 EYE BOT NUT A SEEVE ASTM A HAND WHEE A351 CF8M 15 NAME PATE AUMINIUM 16 WHEE NUT 316 SS Construction Seat/Sealing materials: From soft materials suitable for temperatures down to -196 C (-327 F) to metal seats for aggressive and corrosive process media up to 850 C (1562 F) constant temperature. Extended bonnets: Gland packing is located away from cold area in cryogenic and low temperature systems. Valve operator is accessible in high temperature applications with pipe lagging. Extended stems allow operation through bulkheads and other obstacles. Cavity pressure relief: Not needed. ocking devices: A locking device allows all globe valves to be padlocked in the fully open or closed position. Actuated operation: Available with electric, pneumatic, or hydraulic actuators. All actuated valves are factory tested before shipping. Forged Steel Globe Valves - Class 150 SW FG SW FG 15 1/ / / / Forged Steel Globe Valves - Class 300 SW FG SW FG 15 1/ / / / Forged Steel Globe Valves - Class 600 SW FG SW FG 15 1/ / / / Cast Steel Globe Valves - Class 150 BW/FG RTJ BW FG/RTJ / Cast Steel Globe Valves - Class 300 BW/FG RTJ BW FG/RTJ / Cast Steel Globe Valves - Class 600 BW/FG RTJ BW FG/RTJ / All dimensions in millimeters unless specified as inch. Dimension are for reference only, subject to change. 9 of 11

10 Gate Valves Material of Construction NO. DESCRIPTION MATERIA 1 BODY ASTM A182-F316 2 BONNET ASTM A182-F316 3 STEM ASTM A WEDGE ASTM A SEAT RING ASTM A BONNET BOT ASTM A320-B8 7 GASKET GRAPHITE 8 GAND ASTM A GAND PACKING GRAPHITE 10 GAND FANGE ASTM A182-F GAND BOT ASTM A320-B8 12 GAND BOT NUT ASTM A GAND BOT PIN ASTM A SEEVE ASTM A SEEVE WASHER ASTM A HAND HWEE ASTM A47 17 HAND WHEE NUT ASTM A194-8 Construction Seat/Sealing materials: From soft materials suitable for temperatures down to -196 C (-327 F) to metal seats for aggressive and corrosive process media up to 850 C (1562 F) constant temperature. Extended bonnets: Gland packing is located away from cold area in cryogenic and low temperature systems. Valve operator is accessible in high temperature applications with pipe lagging. Extended stems allow operation through bulkheads and other obstacles ocking devices: A locking device allows all gate valves to be padlocked in the fully open or closed position. Actuated operation: Available with electric, pneumatic, or hydraulic actuators. All actuated valves are factory tested before shipping. Table of Forged Steel Gate Valves - Class 150 SW FG SW FG 15 1/ / / / Forged Steel Gate Valves - Class 300 SW FG SW FG 15 1/ / / / Cast Steel Gate Valves - Class 150 BW FG/RTJ BW FG/RTJ / Cast Steel Gate Valves - Class 300 BW FG/RTJ BW FG/RTJ / Forged Steel Gate Valves - Class 600 Cast Steel Gate Valves - Class 600 SW FG SW FG 15 1/ / / / BW FG/RTJ BW FG/RTJ / All dimensions in millimeters unless specified as inch. Dimension are for reference only, subject to change of 11

11 Ordering Information Example 1 : Example 2 : Example 3 : FCB3 C RF G (-SS) FCGB C 8S RF FCGT A SW FN Cryogenic Valve Valve Ball Valve 1-Piece Top Entry Ball 3-Piece Side Entry Globe Gate Designation FCB1 FCB3 FCGB FCGT 2. Pressure Rating Class Designation A B C D E F 3. End Connection Flange Raised Face Ring Joint Flat Face Designation RF RJ FF Butt Weld Sch10S Sch20S Sch40S Sch80S Sch160 SchXXS Designation 1S 2S 4S 8S 16 DS Type Socket Weld Male NPT Male PT Female NPT Female PT Designation SW MN MR FN FR 4. Bore Bore Full Bore Reduced Bore Double Reduced Bore Designation /2" 3/4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 4" 5" 6" Designation Option Option Designation Gear Actuator G 7. Material Material A182-F316 / A351-CF8M A182-F316 / A351-CF3M Designation Blank of 11