Cartridge Relief Valve | Safety Valve | Pressure Relief Valve

Hotsy Cleaning Systems has for many years used a cartridge relief system on their hot water pressure washers, such as the Hotsy 555ss and 790ss, recently changing to either a rupture disk or pressure relief valve. Performing similarly to the pressure relief valve, our cartridge relief is a two-part system, requiring both the cartridge relief valve and a seat. This set plumbs into the coil outlet manifold and in the case of a malfunction of a pressure washer component (such as when the burner does not shut off when the trigger gun is released) opens to relieve high pressure hot water from the coil.