Pressure Washer Pressure Relief Valve

Apply a generous amount of thread lock sealant to the new thermal relief valve and install. Relieve excess pressure or vacuum with one valve that can be configured for either application. This is a genuine oem replacement part sourced directly from craftsman.

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Of course you need to learn how to adjust unloader valve on pressure washer.

Pressure washer pressure relief valve. This valve functions is as a safety backup to the unloader valve. A must have for every pressure washer. In the event of this occurring the safety pressure relief valve will release at a preset pressure. Options from 1 4 to 1 2 in 1200 6000 psi.

Water sprays out of the pressure relief valve 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. Pressure relief safety valves for power washing from brands such as general pump giant fluid controls more. 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 6 out of 5 stars 92 33 99 33. This guide will teach you all about adjusting unloader valve on pressure washer.

The thermal relief valve regulates the amount of pressure in the line at any given time. Once the pressure in the line reaches a certain level the relief valve opens to relief the pressure. These valves begin opening at the set pressure or vacuum level and fully open at about 10 over the set point. After watching this video you may be able to get your pressure washer to build pressure again.

They begin closing as pressure or vacuum level drops and fully close when the system is restored below the set point. How the unloader valve works. The valve allows the extra pressure to bleed out of the line instead of building up. It is rare for an unloader valve to fail to allow the water to by pass when the trigger gun is released but it does happen.

Once the area around the valve has been heated use the wrench to remove the old thermal relief valve. Ultimate washer uw11 pw5d4s thermal relief valve for pressure washers inlet 1 2 inch male pump saver device replacement for karcher 91840130 4 6 out of 5 stars 3 13 89 13. Adjust the set pressure or vacuum level within the range. This video shows the unloader valve in a cut away of a 2700 psi homelite pressure washer.

The unloader valve is a small part of a pressure washer that plays a big role in controlling the strength of the water coming out of your pressure washer.