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PRV Series Proportional Safety-Relief Valves

Swagelok® Proportional Safety-Relief Valves (PRV Series)

Proportional safety relief valves provide over-pressure protection with PED certification.

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PRV series relief valves are proportional safety relief valves that are certified to PED 2014/68/EU Category IV, and CE-marked in accordance with the Pressure Equipment Directive as a safety valve according to ISO-4126-1 for applications with these safety requirements. Five set spring pressure ranges are available with the selected set pressure factory-set, tested, locked, and tagged to ensure the desired setting. Optional end connection adapters provide additional flexibility for installation in a variety of system setups.


Working Pressures up to 6000 psig (413 bar)
Set Pressure 145 to 6000 psig (10.0 to 413 bar)
Seal Materials Fluorocarbon FKM and nitrile

PRV Series Proportional Safety-Relief Valves Catalogs

Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.

Swagelok flow coefficient (C<sub>v</sub>) calculator for valves

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Use our valve flow coefficient (Cv) calculator to chose a valve sized correctly for your needs.

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