Power Washer Pressure Relief Valve

The two serve the same purpose but function differently.

Power washer pressure relief valve.

Oem 5140095 85 replacement pressure washer valve thermal relief dh4240 for dewalt. 4 7 out of 5 stars 11. This is referred to as a closed loop by pass. One of them is a sticking unloader valve.

If your pressure washer is not building pressure and the engine is surging there could be a few different causes. When the operator releases the trigger the pump s unloader diverts the water back to the inlet side of the pump. When the thermal relief valve opens cool water enters the pump and cools the system. Some power washers may be equipped with a pressure regulator system in place of an unloader valve.

Thermal relief valves are a must have for pressure washers when the water is supplied by a garden type water hose. 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. Pressure relief safety valves for power washing from brands such as general pump giant fluid controls more. Thermal relief valves excessive heat.

Karcher surface cleaner 3200 psi rotating surface cleaner for gas and electric pressure washers. 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. Options from 1 4 to 1 2 in 1200 6000 psi. For pricing and availability.

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. An unloader valve has a mechanism in place to trap pressure between itself and the nozzle which relieves the pump of withstanding any back pressure created when the trigger wand is.