vintage 5 hp 2 cylinder devilbiss compressor

by T. McCown
(Cleveland,Oh)

I have a Devilbiss 5 hp 2 cylinder compressor that was probably manufactured during the 1940's.


The compressor pump is making a ticking noise that gets louder as more pressure is created.

The pump will still pressurize the tank to 125 psi.

There a small copper tube that is connected between the 2 cylinders and then connected to the tank through a pressure relief and check valve assembly.

There is also a tube that is connected between the cylinders and the oil reservoir.

What might be the cause of the noise and is it repairable?

I believe the tank is ASME rated. What is the potential useful life of the tank? Can I hydrostatically test the tank?

Comments for vintage 5 hp 2 cylinder devilbiss compressor

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Jan 24, 2015
noise
by: Doug in s.d.ca

... cause of the noise and is it repairable?...

Depends. Piston slap? Bad valve? shaft bearings?
Whatever, you'll likely need to tear it down to find out. Unless it's really bad, you'll want to start looking for parts, and not tear down untill it breaks or you have have a parts source.

...I believe the tank is ASME rated. What is the potential useful life of the tank?
That old, the potential life is zero, but you can probably get away with it.

... Can I hydrostatically test the tank? ...

With the right connectors and a hydraulic pump, sure. Having it done is not cheap, though.

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