cryogenic-gate-valve-bolted-bonnet-12-300-cf8m

Cryogenic Valves

Types Available:

  • DWF Series – Flange x Flange configuration

    • Available as Block only, Block & Bleed, and Double Block & Bleed

    • Low operating torque with super-finished stem and bonnet (made in-house)

    • Packed with low-friction PTFE and graphite seals for a leak-tight seal

  • DMF Series – Flange x Screwed configuration

    • Available as Block only, Block & Bleed, and Double Block & Bleed

    • Low operating torque with super-finished stem and bonnet

    • Packed with low-friction PTFE and graphite seals

  • Other Specified Types – We can source equivalent Monoflange valves from other trusted manufacturers based on project specifications

Technical Specifications:

  • Flange Standards: ASME B16.5

  • Flange Sizes: 1/2″ to 2″ (DN15 to DN50)

  • Pressure Ratings: Class 150 to 2,500

  • Outlet Connection: 1/2″ NPT female

  • Vent Connection: 1/4″ NPT female

  • Seat Options: Metal / Soft

  • Packing: PTFE or Graphite

  • Material of Construction: 316 / 316L Stainless Steel

  • Vent Valve: With anti-tamper head unit including T-handle

  • Fire Safety: Tested to ISO 10497 / API 607

  • Pressure Testing: EN 12266

Applications:

  • Oil & Gas pipelines and process systems

  • Pressure gauge isolation in instrumentation

  • Venting and calibration operations

  • High-pressure and high-temperature environments


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Product Description

Design Valve Types Available:

  • Gate Valves: Size 2″ to 54″ (50 mm to 1350 mm), ASME Class 150 to 2500

    • Design Standards: API 600, ASME B16.34, BS 6364, ISO 28921

  • Globe Valves: Size 2″ to 24″ (50 mm to 600 mm), ASME Class 150 to 600

    • Design Standards: API 623, BS 1873, ASME B16.34, BS 6364, ISO 28921

  • Check Valves: Size 2″ to 36″ (50 mm to 900 mm), ASME Class 150 to 2500

    • Design Standards: API 594, BS 1868, ASME B16.34, BS 6364, ISO 28921

End Connection:

  • Flanged Ends (ASME B16.5)

  • Butt Weld Ends (BW)

  • Other connection types available upon request

Compliance & Testing:

  • Fugitive Emissions: Complies with ISO 15848-1 (Endurance Class CO2, Tightness Class BH)

  • Tested at -196°C per BS 6364, in-house facility for valves up to 60″

  • SIL3 Safety Integrity Level for automated valves

  • Successfully tested to Shell Design Validation Test Procedure 77/300 (witnessed by Shell Inspectors)

  • Optional Tests: EN 12567 Annex A (Thermal Shock Test) and Annex B (Endurance Test)

  • Inspection & Testing in accordance with API 598

Pressure & Temperature Capability:

  • Temperature: down to -320°F (-196°C)

  • Pressure: up to 750 psi (52 bar) depending on class

  • ASME Class 150 to 2500 (varies by valve type)

Main Body Materials:

  • Carbon Steel: LCB, LCC, LC3, LF2

  • Stainless Steel: CF8, CF8M, CF3, CF3M, F304, F304L, F316, F316L

  • Available in a wide range of metallurgies for specific low-temperature applications

Drive Options:

  • Manual Handle

  • Bevel Gear

  • Electric Actuator

  • Pneumatic Actuator

Key Features:

  • Bonnet extension/extension column keeps packing rings within safe temperature range

  • Thermal stabilisation of body and obturator to ensure dimensional stability during temperature cycles

  • Cavity relief pressure arrangement to prevent thermal locking

  • Seat and disc hardfaced to prevent seizing and galling

  • Engineered for LNG, LPG, and cryogenic hydrocarbon service

  • Multiple actuation options for remote and automated operation

  • ValvTrac™ RFID tags for reliable digital traceability


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