Is there any indicator other than NSF-PW that pipe fittings are pressure rated? Every single fitting over 2" I found except MAYBE one or two at menards and lowes was NSF-DWV or had almost no indication at all (in the case of Sanitary Pipe)
One entire section at lowes had NSF-SD or something like that (sewage lines).
PVC Fittings
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MrCrowley
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This might help:
http://www.spudfiles.com/spud_wiki/inde ... _Rated_PVC
I've never heard of NSF-SD being used with spudguns though. Sometimes you can find NSF-DWV pipe and fittings that also has a pressure rating, so it might say: NSF-DWV 260PSI @73F
As long as it has a pressure rating or NSF-PW, it should be fine for spudgun use.
http://www.spudfiles.com/spud_wiki/inde ... _Rated_PVC
I've never heard of NSF-SD being used with spudguns though. Sometimes you can find NSF-DWV pipe and fittings that also has a pressure rating, so it might say: NSF-DWV 260PSI @73F
As long as it has a pressure rating or NSF-PW, it should be fine for spudgun use.