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Cryogenic Valve

Cryogenic Valve

African Valve is a trusted Cryogenic Valve Manufacturer in Libya, delivering high-performance valves designed for ultra-low temperature applications down to -196°C. Our cryogenic valves ensure leak-proof operation in LNG terminals, liquid oxygen storage, and nitrogen distribution lines. Built with extended bonnets and low-temperature-compatible materials, these valves guarantee safe, efficient performance even under extreme cold and high-pressure service conditions.

Function & Working

Cryogenic valves regulate or isolate the flow of liquefied gases stored at cryogenic temperatures. The extended stem design insulates the actuator and packing from freezing temperatures, ensuring smooth actuation and preventing frost buildup. These valves offer precise sealing and long-term durability in sub-zero environments.

Advantages

  • Suitable for temperatures as low as -196°C

  • Extended bonnet prevents thermal transmission

  • Bubble-tight shut-off under cryogenic pressure

  • Oxygen-cleaned and degreased for safety

  • Low maintenance and corrosion resistant

Types Offered

  • Cryogenic Emergency Cut-off Valve

  • Cryogenic Short Stem Globe Valve

  • Cryogenic Long Stem Globe Valve

  • Cryogenic Steam Jacket Globe Valve

  • Forged Cryogenic Trunnion Ball Valve

  • Cryogenic Ball Valve

  • Cryogenic Check Valve

  • Cryogenic Gate Valve

  • Cryogenic Pneumatic Actuated Globe Valve

Industries Served

  • LNG Processing and Storage

  • Industrial Gas Plants (O₂, N₂, Ar)

  • Aerospace and Satellite Fueling

  • Petrochemical Refineries

  • Cryogenic Distribution Networks

  • Offshore Platforms

Key Components

  • Extended Bonnet – Separates cryogenic media from stem seals

  • Valve Body – Made of CF8M, CF3M, Inconel, or Monel for low-temp resistance

  • Disc and Trim – Precision-lapped for tight sealing

  • Seat Ring – PTFE or metal seated for cryogenic compatibility

  • Stem Assembly – Designed to handle thermal contraction

  • Actuator – Manual or pneumatic, isolated from cold zones

  • Packing and Gland – Cryogenically rated sealing system

Technical Specifications

  • Design Standards: BS 6364, MSS SP-134, API 598

  • Body Materials: CF8M, CF3M, Inconel, Monel, Bronze, Hastelloy, Super Duplex, Titanium, WCB (non-wetted parts)

  • Trim Options: SS316, Stellite, PTFE

  • Pressure Ratings: Class 150 to 900 / PN16 to PN160

  • Size Range: DN15 to DN600

  • End Connections:

    • Flanged (Raised Face or Ring Type Joint)

    • Butt Weld (BW – Butt Welded for high-pressure cryogenic lines)

    • Socket Weld (SW – Socket Welded for compact and high-strength connections)

    • Threaded (NPT – National Pipe Thread for smaller applications)

  • Actuation Options:

    • Manual (handwheel or gear operated)

    • Pneumatic actuator (for remote control in cold-service applications)

  • Special Features:

    • Degreased and oxygen-cleaned internals

    • Fire-safe design

    • Extended bonnet for thermal insulation

    • Custom-engineered solutions from a certified Cryogenic Valve Manufacturer in Libya

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