Pressure Washer Pressure Relief Valve

One of them is a sticking unloader valve.

Pressure washer pressure relief valve.

Thermal relief valves excessive heat. New oem homelite 1 4 thermal release relief valve pressure washers 678169004. Ultimate washer uw11 pwabv038 power washer ball valve kit 3 8 inch male plug x 3 8 inch female quick connect 4000 psi for high pressure hoses 3 7 out of 5 stars 162 33 99 33. 4 7 out of 5 stars 11.

Pressure relief safety valves for power washing from brands such as general pump giant fluid controls more. Options from 1 4 to 1 2 in 1200 6000 psi. This is referred to as a closed loop by pass. When the thermal relief valve opens cool water enters the pump and cools the system.

Needless to say an unloader valve is a crucial element of the pressure washer. The pressure level range of pressure washers is quite high. Dewalt oem 5140095 85 replacement pressure washer valve thermal relief dh4240. This video shows the unloader valve in a cut away of a 2700 psi homelite pressure washer.

Importance of adjusting the unloader valve. Thermal relief valves are a must have for pressure washers when the water is supplied by a garden type water hose. 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. It circulates through the pumps in the washer system and comes back to the inlet of the unloader.

When the operator releases the trigger the pump s unloader diverts the water back to the inlet side of the pump. Oem pressure washer water thermal relief valve general pump 100558 1 2 m inlet. Only 5 left in stock order soon. Oem 5140095 85 replacement pressure washer valve thermal relief dh4240 for dewalt.

After watching this video you may be able to get your pressure wash.