Pressure Washer Thermal Relief Valve Function

The thermal relief valve keeps pressure cleaner pumps operating in a safe range to prevent overheating caused by recirculating water.

Pressure washer thermal relief valve function.

The pump then overheats. Only 5 left in stock order soon. The thermal relief valve entered common usage with the steam boiler a machine that uses heat to turn water into steam which creates a positive pressure inside the boiler. When the thermal relief valve opens cool water enters the pump and cools the system.

The thermal release valve keeps the water in the pump within a safe temperature range to prevent overheating which can be caused by the recirculating water within the pump system. Thermal relief valves excessive heat. 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. Pressure thermal relief safety valves for the power washing industry from brands such as annovi reverberi cat general pump je adams giant more.

Oem 5140095 85 replacement pressure washer valve thermal relief dh4240 for dewalt. Thermal relief valves are a must have for pressure washers when the water is supplied by a garden type water hose. 4 7 out of 5 stars 11. This pressure forces the steam out and past a wheel which turns from the force of the passing steam.

When the operator releases the trigger the pump s unloader diverts the water back to the inlet side of the pump. When the system is in bypass mode the thermal relief valve opens to release hot water. Sizes from 1 4 to 1 2 in up to 190 f. Thermal relief safety valves for pressure washing from brands such as ar cat general pump je adams giant more.

This is referred to as a closed loop by pass. When the washer is not spraying water it is recirculated within the pump system to keep it under pressure which also causes the water to heat up.