[DAVID GAGNARD]

[QUOTEWhen PVC fails (and it will under air pressure) it is a catastrophic failure. Little shards everywhere. The stuff is bad news. Guys will say they've never had a problem, but it is just a matter of time.
][/quote]
I'm not saying to use PVC, just telling you of my expirence with it...Built my shop (40x50) in the mid 90's,was out of money by the time it was done, so I ran about 200' of air line thru it,used one inch PVC,(BTW:rating says 300 psi on it) it was the least expensive option and I could do it myself..I have a fairly large commercial type compressor, set at max of 160psi....so far, no breakages,guess I'm just lucky....Schedule 40 PVC is even thicker and probably has a higher psi rating.......2 large commercial body shops in the areause nothing but PVC throughout their shop with great results......

Whatever you use for your air lines,try to have a "slope" in them so the moisture in the air will drian and not collect or "pool" in any sag you may end up with...........

David