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Pressure Rated PVC

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Pressure Rated PVC

Unread postAuthor: octane89 » Sun Nov 04, 2007 10:34 am

I know what it is and how to see if it is or not, but on pvc thats says Nsf-pw, what is their pressure rating? On pipe it's obvious since it's listed right there already. I have a 3" tee and am working on a 300+ cubic in pneumatic and I want to use the highest pressure I can. The rule of thumb is don't go over the weakest parts rating, but I don't know what some parts are rated too.

If you need to know what parts I may be using, it's mostly tee's and elbows (in 2").
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Unread postAuthor: LikimysCrotchus5 » Sun Nov 04, 2007 11:19 am

I wouldnt use pvc for pressure over 300 even though some of it may say 300 psi or more. I would just go with copper or other metals.
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Unread postAuthor: TurboSuper » Sun Nov 04, 2007 11:26 am

Yeah, or just go with SCH80 or SCH120 to be on the safe side.
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Unread postAuthor: BC Pneumatics » Sun Nov 04, 2007 11:37 am

Pressure rated fittings hold as much as the same size pipe. (The exception to this is threaded fittings, which will usually hold less pressure before leaking)
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Unread postAuthor: cwazy1 » Sun Nov 04, 2007 11:55 am

ummm guys i think he is saying hes gonna build a 300+ cubic inch chamber. not a 300psi cannon.

as for the rating on fittings, BC is correct. ^^
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Unread postAuthor: octane89 » Mon Nov 05, 2007 9:27 am

Ok thanks for the info. And cwazy1 is right on the 300 cubic in part, but Im still gonna try to go as high as I can in psi.
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