This is referred to as a closed loop by pass.
Pressure washer thermal relief valve.
When the thermal relief valve opens cool water enters the pump and cools the system.
When the operator releases the trigger the pump s unloader diverts the water back to the inlet side of the pump.
The thermal release valve allows hot water to exit the pressure washer if the water temperature becomes excessively high.
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The gas engine pressure washer s thermal relief valve helps protect the pressure washer s pump against thermal damage.
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.
Thermal relief safety valves for pressure washing from brands such as ar cat general pump je adams giant more.
Sizes from 1 4 to 1 2 in up to 190 f.
When the water temperature rises above the acceptable limit the thermal.
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The pressure washer is left running while it is not spraying water the water in the pump will begin to heat up.
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When the rated water temperature is exceeded the thermal relief valve automatically discharges the hot water onto the ground and lets in the new cooler water.
Pressure thermal relief safety valves for the power washing industry from brands such as annovi reverberi cat general pump je adams giant more.