LNG

Swing check valves for cryogenic back-flow prevention

Swing check valves prevent the reversal of flow in cryogenic applications and are activated by the fluid flow in the pipelines. They are designed for installation in bulk tanks, trucks, ISO-containers and piping configurations.

product image of a check valve swing

Product description

These valves are one-directional and are greatly suitable for medium velocity/high flow use.

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Material

Body: Steel
Cap: Brass
Plunger: Brass
Seat: PCTFE

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Specifications

Gas types: Oxygen, Nitrogen, CO2, Argon, LNG (Liquefied Natural Gas)
Connections: Thread, braze
Type: NPT, SBT
Pressure range (cold, non-shock): 27.5 to 41 bar (400 - 600 psi)
Cracking pressure: 30 mbar (0.5 psi)
Temperature range: -196˚C to +65˚C (-325˚F to +150˚F)
Sizes and range: ½” to 2” (15mm to 50mm)
Series: 846, 840, 05412 and 05413
Standards: PED, ASME, CRN

*Materials and specifications are subject to generalisation. Our experienced people are ready to help you find the correct fit for your application. 

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Features

  • Durable construction
  • Minimal downtime improving cost-efficiency
  • Exceeds poppet or lift valves in fluid capacity
  • Union bonnet valve can be permanently installed in-line
  • Top entry permissive
  • Relatively inexpensive
  • Low flow resistance
  • Can be installed horizontally and vertically

Did you know?

Not for use with reciprocating gas service

Threaded back brazed pipe nipples in 1” increments up to 6” for SCH-10/40/80

Vertical installation can only be done where flow runs from bottom to top

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