Air Compressor Valve Leaking

This video goes over a few main reasons why your air compressor pressure switch or unloader is leaking while the compressor is running or when it shuts off.

Air compressor valve leaking.

My little 2 gal. Remove and install new safety relief valve. If air leaks out the unloader when the pump stops replace the check valve because the check valve leaks air back towards the unloader. Replace valve plate assembly.

I had a look at the check valve and all is good. With the compressor off the unloader valve should not be leaking any air at all after the unloading process a second or two has completed. Hotdog compressor was working very well till last month when the unloader valve opened while the compressor had kicked in to build up the. If the air is leaking from the unloader valve then see the page under fixing compressor problems about air continuously leaking from the unloader valve for.

The safety valve pops open to relieve excessive air pressure if the pressure switch fails to shut off the air compressor at the cut out pressure setting. Air leaking from inter stage safety relief valve when compressor is pumping. Unloader valve is leaking air. Air continuously leaks out of the unloader valve on your air compressor and this is a problem.

If you find that your compressor pressure switch unloader valve is leaking air continuously then you have located at least one of the leaks on your air compressor. If new safety valve leaks remove cylinder head inspect and clean reed valve assembly. Replace the safety valve if it leaks air constantly. The unloader valve is leaking air when the compressor is running.

Safety relief valve not functioning properly. The valve on the outside of the pressure switch may look something like the one in the image. Well if air continuously leaks out of the unloader valve then the compressor tank is emptying and the compressor needs to restart to replenish the air in the tank to get back up to cut out pressure so it can stop on its own. When the air compressor reaches the normal cut out pressure and stops but you notice while the air compressor is off that air is leaking out of a valve attached to or perhaps inside of the air compressor pressure switch.