Devilbiss Pro 4000 leaking
by Nick Goins
Devilbiss Power company
Pro 4000 3.5 Hp 20 Gal
13 years old, never a problem
4 weeks ago as compressor is turned on to fill tank air continuously leaking from what I think is pressure valve (smaller line coming from tank), not pressure relief valve. Leaks until empty (through small pinhole).
It has never acted this way before. Usually I get up to pressure and it turns off and nothing happens until the pressure drops to a certain level, then it kicks back on. But now it leaks for some reason.
I have taken the cover off to take the pictures, but it has never been off since purchase.
I have provided many pictures with the last one shows the part leaking and the pin hole it is escaping from.