[Shop-talk] Compressed Air Lines, RapidAir

[jem at milleredp.com (John Miller)]

> Exposed PVC is totally unsuitable for the transmission of compressed
> air.  It will eventually shatter.  If you're lucky, no one gets hurt.
> If you're not, you or someone else gets killed.

On the day you install it, schedule 40 PVC is very strong.  But...

If it's exposed to impact, copper pipe will dent, plastic pipe will crack.

If it's exposed to the sun plastic pipe will become brittle from UV.

And, of course, remember that if and when the thing pops, 100psi of 
compressed gas (air) is nothing like 100psi of non-compressible liquid 
(water.)

John.