Moving compressor new pipe

I work in the industrial plastic pipe business. Please whatever you do, do not use PVC pipe (sch40 or sch80), as stated earlier when it lets go it produces shrapnel that can harm or even kill. There are company's that sell plastic pipe approved for air service (Asahi being one).
A friend of mine has his shop air lines plumbed with Sch80 PVC and has a humongous compressor. He has one fitting in one room that hisses due to a leak. I have never encouraged him to fix it because it will keep bleeding pressure off the rest of the system. You can't make people understand that air (gas) pressure is MUCH different than fluid pressure.