I've heard of shops using PEX for air lines. It's really easy to work
with. Not rated for air or areas exposed to sun light, but if it
explodes it won't turn into shrapnel like PVC does.

Max wrote:
Is there any consensus on whether or not to use PVC or CPVC for air lines?
My compressor is capable of 150psi.
I already have copper for most of my distribution system but I need to add a
branch and the copper prices are profanity inducing.

Max