Vent valves for gas pressure bleed-off

Vent valves are designed to bleed off trapped liquid or gas and reduce the negative pressure inside LPG or NH3 transfer lines. Oftentimes they are used together with globe and angle valves in gas systems.

Product description

Vent valves can relieve pressure or provide a visible warning functionality of when a tank is filled to the limit, as liquid will then be released as an indicator instead of vapour.

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Body: Stainless steel, brass
Seat disc: Resilient rubber, teflon

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Gas types: LPG (Propane, Butane), NH3 (Ammonia, Anhydrous Ammonia)
Connections: Thread
Types: NPT
Sizes and range: 1/4" 
Pressure range: Max. 27.5 bar (400 psi)
Series: 3165 and TSS3169
Standards: UL listed

*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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  • Actuation can be ribbed, slotted or with a tee-handle
  • Operational warning plates available for some applications
  • Easy installation in dedicated plugs on many products

Did you know?

Adding a dip tube to a vent valve will turn the product into a fixed liquid level gauge

For globe and angle valves the vent valves provide indication of when the coupling can be disconnected

Get in touch!

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