Pressure Washer Thermal Relief Valve Leaking

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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. When the water temperature rises above the acceptable limit the thermal. 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. 4 7 out of 5 stars 11.

Owners of pressure washers often report symptoms that are difficult to diagnose like low pressure high pressure no pressure surging pressure and pump issues. Until you pull the trigger your pressure washer is in by. 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. Oem 5140095 85 replacement pressure washer valve thermal relief dh4240 for dewalt.

The thermal release valve allows hot water to exit the pressure washer if the water temperature becomes excessively high. Only 5 left in stock order soon. This just means that a thermal relief valve has been installed on your pump to prevent over heating. 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 leak could be due to the normal operation of the thermal release valve. Seeing water spewing out of your pressure washer can be a distressing sight. The pressure washer is left running while it is not spraying water the water in the pump will begin to heat up. The thermal relief valve is usually preset to discharge water when it reaches 195 degrees.

If the thermal release valves seal is compromised it may continuously leak water and cause the washer to lose pressure.