Can't find a Devilbiss blow off valve

by Dennis Parent
(Westfield Ma. 01085)

My Dad left me an old DeVilbiss compressor for small body work jobs. It had a blow off valve that use to blow of @ 85 psi and reset at 75 psi.


It didn't have your normal electric relay shut off to the AC motor. (very old unit)

Its so old that the model no. is unidentifiable.
Question is, where can I get a blow off valve that blows @ 85 to 90 psi & resets at 75 to 80 psi.

All the relief valves I have found have 30 to 40 psi differential.

Dennis

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May 28, 2017
Can't find a replacement blow off valve
by: Doug in s.d.ca.

So the regulator was used as a pressure switch, functionally?

I think you'll be better off to just add a real pressure switch. Use a regular 85 psi PRV, or whatever the tank can handle. Shouldn't be a problem...

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