Reply by Steve Peterson

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Posted on Air Lines and dust collector hoses

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Steve Peterson

377 posts in 3105 days

#1 posted 03-08-2010 06:20 AM


PVC pipe for air lines is extremely dangerous. It may seem like it is hard to break, but PVC gets brittle when it is cold or exposed to sunlight. Compressed air has a lot of potential energy that is released explosively when PVC bursts. The result is lots of PVC shrapnel all over your shop. Some people use it without failure, but they are pushing their luck. Enough people have reported the disastrous results of an explosion that it is way too risky to try it. There is supposedly a PVC pipe designed for compressed air, but it is more expensive than copper.

Copper or black iron pipe does not shatter when it ruptures. The result of a burst copper pipe is a small hole and a long psssssst sound, but no explosion.

Be safe and only use metal pipe for PVC.

-- Steve

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