[Tytus Gerrish]

I Have lot's of experience with pressurized gas in PVC. i have made it a habit to hydrotest my PVC devices before i use them. i tested an assembly witch included about 5'in length of 4" sch 40 PVC pipe to 400 PSI with no problems. Clearly with PVC they're are many factors that contribute to the strength of pressure vessels made of PVC such as surface area glued in joints, external damage, glue curing time, exposure to sunlight. as sutch every assembly unique and as a general safety precaution should be hydrotested. i have done such things like re-enforce PVC pressure cylinders with Fiberglass to hug comtainers and prevent them from expanding. I swear by this practice. before i started doing that. I had an accident with A pvc air tank exploding. 170PSi a 2" vessel burst at the joint of a reducer and the pipe. the whole cylinders disintrated and threw a 2" cap into my chest left me with a big painfull black and blue mark for about a month, I figured that lucky considdering all the other sharp pieces of PVC shrapnel that could have hit me. it probaly happened because the pipe wasant fully seated in the connector when the cement hardned. Let me tell you When that Happenes to you Once you learn to be carefull Real quick.