Quote Originally Posted by 25T_Bucket View Post
Well, I've used 1/2 I.D. PCV pipe on my compressor and 2 of my buddies garages... now keep in mind, these are not a professional shop... they're just home garage setups... The line goes up from the compressor, along the ceiling, drops down a post to the water trap and back up the the hose reel. It's been years without incident... the pipe is rated for 600 PSI.

Having said that, yes copper lines would be better without a doubt or the new nylon tubing designed for compressor lines which is what I plan to update with soon... (See attachment)


Below is link for US Dept of Labor document on the use of PCV pipe on compressed air or gas lines...

http://www.osha.gov/dts/hib/hib_data/hib19880520.html
Interesting. It seems ABS plastic is ok for this according to OSHA.
I just figured plastic pipe of some sort would be easier to assemble, cheaper, probably be easier to get air tight seals, and be much lighter to mount to the wall. So I will modify my question, Has anyone ever used any type of plastic piping including ABS or the nylon tubing mentioned above?
I'd love to use copper but it is getting prohibitively expensive, and I'm ok at sweat welding but not the best! Galvy is cheap, but I was more worried about weight and rust forming inside of the pipes. I definately want it to be safe, as I'm not into being hit by any kind of exploding pipe!