The Shop > Tools

Compressor safety, or how do I make sure an old compressor is safe?

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mexican jon:
We normally test 1.5 times max working pressure for the initial test and certification :thumbup: then periodic testing would be to max working pressure  :clap:.  And just so you know our normal working pressure is 15000 PSI (yep fifteen thousand)

This is for receivers rather than boilers (don’t know if boilers are 2 times max design working pressure) :scratch:

edward:
if you have a Scuba shop near you they will have the tools to look inside, and an ultrasound thickness measuring device if there are any dodgy spots. it might cost, dependant on how nice they are feeling.

edward:
Forgot to add: not all Scuba shops test in house, so it would need to be one that does.

Scuba cylinders are typically 232bar WP and 348bar TP made of steel and used in salt water, so divers tend to be quite anal about testing.

David Jupp:
Stick to the test pressure on the label - (I don't read Swedish, but it looks like 8 bar test with 7 bar working ?).   Certainly don't try 2x working - you may cause damage.

awemawson:
Simon,

I have a pressure test pump like the one in the picture below and would willingly test your tank were distances and geography not such a challenge. Though I must confess I've never hydro statically tested my compressor tank just regularly drained condensation and given it a visual check over (it's in an otherwise unoccupied steel Portakabin - if the worst happened it would be contained)

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