Check Valve 1/2 CV223300AV

This is an authentic replacement part manufactured for use with Campbell Hausfeld air compressors. The check valve works with the unloader valve and is used to prevent air from exiting the tank when the unloader is draining air trapped in the cylinder over the piston. A faulty check valve would allow air to exit the tank through the unloader, and the motor would then switch on to raise the pressure in the tank, and this could potentially burn out the motor. This unloader valve is sold as an individual replacement part.