Stainless Steel Cryogenic Gate Valve

NSV Stainless Steel  Cryogenic Gate Valve 

This is NSV cryogenic gate valve, designed for liquefied natural gas (LNG), liquid nitrogen, oxygen, and argon, with service down to -196°C. The body is made of 304(L) or 316(L) stainless steel, which maintains good toughness at extremely low temperatures without becoming brittle. It features a flexible wedge design that automatically compensates for thermal contraction and assembly tolerances, ensuring reliable sealing. The packing gland is extended and insulated to prevent heat ingress and stem frosting or seizing. suitable for a wide range of cryogenic industrial systems.

Key Features

Valve type: Cryogenic gate valve

Material: 304(L) / 316(L) stainless steel

Design: Flexible wedge

End connection: Flanged (RF/FF)

Actuation: Handwheel

Packing design: Extended gland with insulation, frost-proof

Operating temperature: -196°C to -150°C

Pressure rating: Class 150–2500 (PN16–PN420)

Size range: 1/2"–40" (DN15–DN1000)

Performance Advantages

304(L)/316(L) offers stable mechanical properties in cryogenic conditions; flexible wedge provides tight, self-adjusting seal; extended packing isolates cold flow, preventing ice buildup and stem sticking; smooth operation even at -196°C; full valve validated through cryogenic testing for real-world performance.

Typical Applications

LNG import terminals and regasification plants, cryogenic liquid storage and transfer systems, air separation units, liquid nitrogen cooling lines, semiconductor fabrication, aerospace propellant handling facilities.

Quality Assurance

Shell and seat tested per API 598 / ISO 5208, and subjected to Cryogenic Test—valves are fully cycled and leak-checked while immersed in liquid nitrogen at -196°C to confirm functional integrity under actual service conditions. EN 10204 3.1 Material Test Certificate provided. Castings comply with ASTM A351 standard.

FAQ

1.Q:Is there have MOQ?

A：No.we can accept 1set,but there have additional cost $150.00(process of export) if the order value within $2000.00.

2. Q:How can I get your company catalog?

A: For your reference, basic catalogue is same as "Download>E-Catalog” of homepage. If you need printed material or request more specific data like PQ material, please contact sales team.

3. Q: What kinds of valves do you manufacture?

4. A: We usually manufacture valves made of various materials such as cast Iron/ carbon steel,stainless steel,Alloy steel and industrial valves such as ball, gate, globe, check, bellows seal and ETC. For detail information, please refer to " Download>E-Catalog” of homepage.
4. Q:What’s the packing for shipping?

A:Its carton for small valves(sample) and plywood case(don’t to fumigate).