I worked in a PCB shop that had a network of 1 1/2" PVC pipe for compressed air. When Tees failed we would lose production for the remainder of the day. We fina

I worked in a PCB shop that had a network of 1 1/2" PVC pipe for compressed air. When Tees failed we would lose production for the remainder of the day. We finally replaced the entire network with type M copper.