Pressure Washer Thermal Relief Valve Function

Pressure thermal relief safety valves for the power washing industry from brands such as annovi reverberi cat general pump je adams giant more.

Pressure washer thermal relief valve function. 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. This pressure forces the steam out and past a wheel which turns from the force of the passing steam. When the thermal relief valve opens cool water enters the pump and cools the system. More buying choices 19 18 14 new offers homelite new 1 4 thermal release relief valve for pressure washer water pumps by the rop shop.

Thermal relief safety valves for pressure washing from brands such as ar cat general pump je adams giant more. The pump then overheats. Thermal relief valves excessive heat. Sizes from 1 4 to 1 2 in up to 190 f.

When the operator releases the trigger the pump s unloader diverts the water back to the inlet side of the pump. Pressure washer safety valves pressure and thermal relief. At water temperatures above 145º f packing seals may fail. 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.

When the system is in bypass mode the thermal relief valve opens to release hot water. 4 7 out of 5 stars 11. Oem 5140095 85 replacement pressure washer valve thermal relief dh4240 for dewalt. 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.

Thermal relief valves are a must have for pressure washers when the water is supplied by a garden type water hose. This is referred to as a closed loop by pass.