Any one out there tried it? Did some searching on the web and get mixed results, mostly ok. I used copper in my last shop but now in the new shop I will need something flexible to slide in to the framing 16" o.c. I like to hide it in the wall for a nice finish therefore making repairs a big deal. I'm thinking of running the pex and transition to copper at the point where it will exit through the wall for a coupler/use. I used it for some of my domestic water dist. but just don't have that warm fuzzy feeling for it yet! (especially at 100 or better psi) It seems that the PAP ma be rated for air but not the PEX, but that may just be the lawyers talking. If it werent for lawyers, WE WOULDN'T NEED LAWYERS!!