The pipe I bought has SCH 40 printed on it…But it also says DWV….Is it ok to use?
When selecting pipe for use in building a spudgun or other type of novelty launching device, make sure the pipe has a pressure rating printed on the pipe. The typical printing on a length of pressure rated pipe will look something like this: (2″ PVC pipe) “MANUFACTURES NAME” PVC 1120 SCH 40 ASTM D-1785 NSF-PW 280 PSI @ 73F The thing you want to look for is the NSF-PW 280 PSI (or whatever the psi rating is on that size of pipe) It doesn’t matter if it is SCH 40, 80, or 120….Look for the pressure rating. If the pipe has a pressure rating on it, it is ok to use. The reason that it also says DWV is because all ratings for the pipe must be labeled. If a piece of pipe is rated for 280 psi…It is obviously approved for use as drain pipe. There are all kinds of labels you might find. One is “cellular core”. If it has a cellular core label…..dont even think about using that for a spudgun. It will eventually fail on you. To make a long story short…..I don’t care if the pipe is labeled “Bl
