Pressure Washer Thermal Relief Valve Leaking

The pressure washer is left running while it is not spraying water the water in the pump will begin to heat up.

Pressure washer thermal relief valve leaking.

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. If the thermal release valves seal is compromised it may continuously leak water and cause the washer to lose pressure. This just means that a thermal relief valve has been installed on your pump to prevent over heating. One of them is a sticking unloader valve.

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. 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. 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.

Until you pull the trigger your pressure washer is in by. When the thermal relief valve opens cool water enters the pump and cools the system. The thermal relief valve is usually preset to discharge water when it reaches 195 degrees. The thermal release valve allows hot water to exit the pressure washer if the water temperature becomes excessively high.

4 7 out of 5 stars 11. The leak could be due to the normal operation of the thermal release valve. 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. Seeing water spewing out of your pressure washer can be a distressing sight.

Oem 5140095 85 replacement pressure washer valve thermal relief dh4240 for dewalt.