09-24-2014, 06:48 AM
Richard, The Gast never starts up unless system pressure drops to 70 psi. It shuts off at 90 psi. My problem seems to be that when engine compressor is running at 120 psi it seems to have blown out a seal in the Gast. Thanks everyone for the info. I will definitely be putting in a check valve when I put the new Gast back in. That should keep it from ever seeing anything over 90 psi.