Can I use PVC pipe and fittings/valves for compressed air or gases?
” Although some people use PVC piping for compressed air or gases, we are not aware of any fittings manufacturer that recommends it and we highly recommend that you do NOT use plastic fittings with compressed air/gases. We believe it is dangerous and absolutely do not recommend it. Air is much more compressible than are liquids and could therefore cause a violent explosion. “Can I glue PVC if it is wet?” All solvent cements have the ability to absorb some water and still perform well enough to accomplish an adequate joint. However, research shows that the presence of just 10% water in solvent cement can slow penetration and swelling by up to 65%. This joint, with water inside, will always be an inferior joint and subject to problems. “Can I use PVC glue on other plastics?” We only recommend using glues manufactured for a specific plastic i.e. PVC glue only on PVC pipe. Note: There are many plastics that cannot be glued at all; polyethylene, polypropylene, nylon, polybutylene, and other
