Pressure Washer Thermal Relief Valve Repair

The thermal relief valve helps you operate you pressure washer safely.

Pressure washer thermal relief valve repair.

The thermal relief valve helps you operate you pressure washer safely. If your pressure washer is not building pressure and the engine is surging there could be a few different causes. Pressure thermal relief safety valves for the power washing industry from brands such as annovi reverberi cat general pump je adams giant more. The thermal release valve allows hot water to exit the pressure washer if the water temperature becomes excessively high.

When the pressure in the line builds to a certain level the relief valve is pushed open and allows excess pressure to escape rather than allowing it to build up in the line. This part regulates the amount of pressure in the line at any given time. When the thermal relief valve opens cool water enters the pump and cools the system. If the pressure washer runs for more than 5 minutes when the spray wand isn t in use the water in the pump often overheats causing the thermal relief valve to open and discharge hot water onto the ground.

The valve that is leaking is probably the thermal release valve part number thermal relief valve the leak could be due to the normal operation of the thermal release valve. The gas engine pressure washer s thermal relief valve helps protect the pressure washer s pump against thermal damage. One of them is a sticking unloader valve. When the cool water enters the pump it helps cool down the engine.

Pressure washer safety valves pressure and thermal relief. When the pressure in the line builds to a certain level the relief valve is pushed open and allows excess pressure to escape rather than allowing it to build up in the line. Zgn 1 4 npt brass thermal relief valve thermal release safty valve for homelite ryobi dewalt pressure washer 678169004 17658 5 0 out of 5 stars 1 12 99 12.