How do you adjust the relief valve?

To adjust the relief pressure on a relief valve, first remove the chrome hex plug next to the inlet port using a 7/8” combination wrench or similar tool. You will then have access to the relief set screw. Turning the screw clockwise with a 5/16” allen wrench approximately 1/4 turn will increase the pressure by approximately 200psi.

How do you remove a pressure relief valve?

Use an adjustable wrench to remove pressure relief valves. The safety relief, or pressure release, valve is the one safety feature that every air compressor built in the past few decades has in common.

How do you replace a safety relief valve?

Wrap two turns of Teflon plumber's tape around the threads of the new safety relief valve and insert it into the hole where the original valve was installed. Tighten the valve by hand and snug it down firmly with the wrench, turning it clockwise. Restore power to the compressor. Allow the pressure to build until the compressor stops.

Where is the pressure relief valve on an air compressor?

On your air compressor, the pressure relief valve (PRV) is located on the air tank. You will likely only see a part of the PRV from the wrench flats out to the ring on the end, as the rest is threaded into a port on the tank.

How do you change the pressure on a gas compressor?

Turning the screw clockwise will increase the pressure (kick in sooner) and turning it anti-clockwise will decrease the pressure (kick in later). Drain out the release pressure in your compressor using the drain valve and then plug the compressor and run it. Check that your new cut-in pressure is working.

How to adjust air compressor cut-in pressure?

First of all, turn off your air compressor. To adjust the cut-in pressure, turn the big set screw on the pressure switch clockwise to increase the pressure and anti-clockwise to decrease the pressure. Now, adjust the differential pressure switch to change the cut-out pressure.