Safety Relief Valve RL75-G

The RL75-G is a 3/4” ported relief valve. Designed for emergency relief applications, it may be used to protect systems up to 414 bar (6,000 psi). The valve is a proportional metering style relief valve with soft seats enabling its use with gases, and is approved as a safety accessory to category IV of the Pressure Equipment Directive.

Available in Stock, Contact our sales at [email protected]

Approved to category IV of the Pressure Equipment

Directive (2014/68/EU)

Available preset via internal adjustment or with an external handwheel adjustment option

Wire locking and tagging available on request

Minimal leakage at 90% of set pressure

Reseat within 20% of set pressure

Repeatabily within ±5% of set pressure

Subsea variants available, contact us for advice

Suitable for use with air, nitrogen and sweet natural gas.

Suitable for many other media, contact us for advice

Various spring ranges available




Max Working Pressure

414 bar



Fluid: Gas




Port Size – 3/4’’



2.0 KG (4.4 lb)



Externally Exposed Parts:

316 stainless steel on all pressure retaining

components, 300 series stainless steel is used for the external adjuster.

The non-wetted and enclosed internal adjuster is chrome steel

and brass.



Internally Wetted Parts:

316, 302 and 431 stainless steel, PEEK and

silicon nitride.