Devilbiss Pro 4000 leaking

by Nick Goins
(Snohomish Wa)

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.

Comments for Devilbiss Pro 4000 leaking

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May 25, 2016
Devilbiss Pro 4000
by: Bill

No images arrived.

See: http://www.about-air-compressors.com/pressureswitch.html for the most likely cause of the compressor leaking.

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