Unloader / Regulator Valves

An unloader valve is the component of a pressure washer that allows the pump to bypass the flow of water back to the pump while the spray gun is not being used. Most unloader valves also act as a pressure regulator for the output pressure of the pump. Whenever adjusting an unloader, always be sure to set it to the specified working pressure of the pump. Overloading the pump will shorten the life of the pump.