Flanged Pressure Relief Valves

Pressure relief valves are mounted in a process line as a protective safety feature. It is designed to vent the pressure in a system to stop over pressure. They are commonly mounted by a threaded or flanged connection. Venting to atmosphere is common where inert gases are present, and the pressure is not too high. On more aggressive applications the vented pressure will be safely re-directed or piped away to safety, this can also be the case with high temperatures.


Sizes: 1/2" x 1.1/4", 3/4" x 1.1/2", 1" x 2", 1.1/4" x 2.1/2", 1.1/2" x 3", 2" x 4"

Connections: Flanged DIN or ANSI

Materials: Carbon steel or stainless steel

Disk: Metal, viton or nylon (subject to pressure)

Joints and seals: NBR, FPM, EPDM (depending on model)

Medium: Steam, gases and liquids

Set Pressure: 0.2 to 120 barg (depending upon size)

Temperature: -10 to 350 degC (options -60 to 350 and -200 to 280 degC)

If you have any questions, please contact us on +44 (0) 117 965 4615 or visit our enquiry page and submit the form.

We can also customise our products to your specific needs.

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