Pressure Washer Thermal Relief Valve Function

When the thermal relief valve opens cool water enters the pump and cools the system.

Pressure washer thermal relief valve function.

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. Thermal relief safety valves for pressure washing from brands such as ar cat general pump je adams giant more. When the system is in bypass mode the thermal relief valve opens to release hot water.

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. Pressure washer safety valves pressure and thermal relief. At water temperatures above 145º f packing seals may fail. Pressure thermal relief safety valves for the power washing industry from brands such as annovi reverberi cat general pump je adams giant more.

Thermal relief valves are a must have for pressure washers when the water is supplied by a garden type water hose. Only 5 left in stock order soon. This pressure forces the steam out and past a wheel which turns from the force of the passing steam. 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.

Oem 5140095 85 replacement pressure washer valve thermal relief dh4240 for dewalt. 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 pump then overheats. The thermal relief valve keeps pressure cleaner pumps operating in a safe range to prevent overheating caused by recirculating water.

Thermal relief valves excessive heat. 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.