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Can't figure out if mcmaster pipe fittings are pressure rate

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Can't figure out if mcmaster pipe fittings are pressure rate

Unread postAuthor: JDP12 » Tue May 15, 2007 1:21 pm

Hey all,

Well after building my advanced combustion ( pics will hopefully be up soon) I've decided to build a barrel-sealing piston gun..

But I can't figure out if the fittings on mcmaster are pressure rated!!! It says if the pipe is, but for an end cap for example, this is all it says.

Shape
Cap

Schedule
40

Pipe Size
4"

Pipe to Pipe Connection
Socket-Weld x Socket-Weld

Material
PVC

Color
White

Maximum Temperature
140° F

WARNING
Never use plastic pipe fittings with compressed air or gas.

Specifications Met
American Society for Testing and Materials (ASTM) and National Sanitation Foundation (NSF)

ASTM Specification
ASTM D1784 and ASTM D2466

NSF Specification
NSF 61


so does any of those specs tell me if it is pressure rated?? IN an earlier topic, someone said that the NSF 61 said that it is pressure rated..But no one confirmed it. So I would like to be sure...Thanks guys.
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"Some say his pet elephant is pink, and that he has no understanding of "PG rated forum". All we know is, he's called JSR. "
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Unread postAuthor: sandman » Tue May 15, 2007 2:13 pm

if it says sch 40 or 80 it is rated as far as i know

but if it says gravity something then is is not rated
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Unread postAuthor: Scope » Tue May 15, 2007 2:25 pm

Sandman sch 40 or 80 is only a measure of thickness. and does not indicate pressure rated.

I think nsf61 is pressure rated. it is put in the same category as in able to contain drinking water.
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Unread postAuthor: cork9 » Tue May 15, 2007 2:42 pm

I buy all my pipe from mcmaster they sell both if ur under schedual 40 or 80 its pressure rated even though it sais no gas or whatever
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Unread postAuthor: JDP12 » Tue May 15, 2007 3:22 pm

mm k thanks guys..just want to make sure
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Unread postAuthor: frankrede » Tue May 15, 2007 7:51 pm

I believe all of mcmaster sch-40 and 80 fittings are nsf-pw unless specified that they aren't
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