4 7 out of 5 stars 11.
Pressure washer thermal relief valve leaking.
If your pressure washer is not building pressure and the engine is surging there could be a few different causes.
Oem 5140095 85 replacement pressure washer valve thermal relief dh4240 for dewalt.
Most power washers are equipped with a thermal release valve at the bottom of the pump system which is designed to expel water from the pump system when it becomes too hot.
Only 5 left in stock order soon.
Pressure washers are extremely useful when they re needed as most most owners of pressure washers know but the sensitivity of their systems also makes them prone to setbacks.
One of them is a sticking unloader valve.
Easy fix for faulty valves on pressure washers.
The pressure washer is left running while it is not spraying water the water in the pump will begin to heat up.
Owners of pressure washers often report symptoms that are difficult to diagnose like low pressure high pressure no pressure surging pressure and pump issues.
If the thermal release valves seal is compromised it may continuously leak water and cause the washer to lose pressure.
Pressure washer safety valves pressure and thermal relief.
Pressure thermal relief safety valves for the power washing industry from brands such as annovi reverberi cat general pump je adams giant more.
When the thermal relief valve opens cool water enters the pump and cools the system.
When the water temperature rises above the acceptable limit the thermal.
The leak could be due to the normal operation of the thermal release valve.