| Media: | Gas |
|---|---|
| Temperature: | Low Temperature |
| Material: | Cast Steel |
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Introduction:
The low temperature lift check valve is specifically designed for cryogenic media (such as LNG, liquid nitrogen, liquid oxygen, etc.). It adopts a lift-type structure, utilizing the disc's (self-weight) and medium pressure to automatically open or close, preventing backflow. Key features include cryogenic-resistant materials (e.g., stainless steel, austenitic steel), specialized sealing (metal hard seal or PTFE soft seal), and anti-freeze design to ensure reliability in extreme(low-temperature) environments. It is widely used in LNG storage/transportation, air separation units, and petrochemical cryogenic energy recovery systems.Body Material: Cryogenic carbon steel (ASTM A352 LCB/LCC) or stainless steel (CF8M), subzero-treated to prevent brittleness.
Disc Type: Swing disc with stainless steel pivot pin for low-torque operation.
Sealing System:
Metal hard-faced (Stellite) or PTFE seals (above -100ºC).
Precision-lapped seat-disc contact for ISO 5208 Grade A leakage.
Extended Bonnet: Isolates stem packing from cryogenic fluid.
| Size | DN50- DN1200 (1/2" - 48") |
| Pressure | Class 150~ Class 2500 |
| Temperature | -196ºC to +200ºC |
| Media | LNG,Liquid Oxygen,Liquid Nitrogen etc. |
| Operation | Hand wheel,worm wheel,Pnumatic ,electric |
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