Safety Relief Valve TS37

The TS37 is a safety relief valve with a threaded exhaust port for piping vented flow away from the valve. Designed with an elastomeric seat seal, the valve combines excellent leakage performance with a high discharge flow capacity from its pop-open characteristic. The valve is approved as a safety accessory to category IV of the Pressure Equipment Directive, and is suitable for use in the most demanding liquid or gas applications.

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Approved to category IV of the Pressure Equipment

Directive (2014/68/EU)

Pop-open characteristic for maximum discharge capacity

Available preset and internally adjustable.

Available with relieving gear to enable the manual release of pressure

Wire locking and tagging available on request

Virtually zero leakage at 90% of set pressure

Reseat within the greater of 5 psi or 7.5% of set pressure

when valve has opened and not popped

Reseat within 50% of set pressure once popped

Repeatability within the greater of 2 psi or ±3% of nominal set pressure





Max Working Pressure

40 bar




Fluid: Liquid and Gas




Port Size – 3/8’’



0.4 KG (0.9 lb)

Externally Exposed Parts:

316 stainless steel and acetal.


Internally Wetted Parts:

316 and 302 stainless steel, and acetal.