Small cryogenic relief valves for vapour line safety

These relief valves protect from overpressure accidents and are specifically designed for vapor line safety relief applications and cryogenic liquid containers.

Product description

Relief valves are devices that provide a last-in-line safety defense as a measure to protect equipment and operators from overpressure when gas transforms back into a liquid state due to temperature changes in its surroundings.

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Body: Stainless steel, brass
Spring: Stainless steel
Seat retainer: Stainless steel, brass
Pipe-away adapter: Stainless steel, brass

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Gas types: Vaporized atmospheric gases, Oxygen, Nitrogen, CO2, Argon
Connections: NPT
Pressure range: 1 to 41 bar (15 to 600 psi)
Sizes and range: 1/2” to 1” 
Series: 9400 Series, CRV and LCV series
Standards: Tüv TPED

*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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  • Cleaned and packaged for oxygen service
  • Bubble tight at 95% of set pressure
  • Easy-to-read color-coded labelling of pressure capacity
  • Tamper-proof
  • Adapters provide standard pipe thread connections for venting gas to the outdoors
  • Reliable and factory tested performance

Did you know?

There are 3 different seat options depending on pressure compatibility

This series of relief valves is NOT suitable for liquids!

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Whether you already know what you need, or you would like the opinion of an expert, we are always ready to help you out.