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McMaster-Carr question about pressure rating

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McMaster-Carr question about pressure rating

Unread postAuthor: iisthemuffin » Tue Dec 27, 2011 11:01 pm

Hey, its been a while since ive posted, or even read anything on here. But, I thought it was time to dive back into an old hobby i used to enjoy so much.

Anyway, i read in a thread earlier that anything on McMaster-Carr's website with the rating of "NSF-61" was rated for pressure.

But while reading the info on a fitting i may need to purchase i read this disclaimer: "WARNING Never use plastic pipe fittings with compressed air or gas."

From the generic picture, it looks like it may be pressure rated but hard to tell. Is this just legal crap or something i may want to listen to?

Sorry about the noob question. Ive been out of the game a while and dont want to blow my hand off or anything.

http://www.mcmaster.com/#pvc-%28schedul ... gs/=fjwzsc
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Unread postAuthor: mark.f » Tue Dec 27, 2011 11:09 pm

Because PVC fittings aren't rated for compressed air or gas. But we choose to use them for such at our own risk.

If they say NSF-61 and ASTM-D2466 (for SCH-40) then they are pressure rated (for potable water/hydraulic applications).
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Unread postAuthor: iisthemuffin » Tue Dec 27, 2011 11:14 pm

Thank you.

I actually just dug up an old thread i posted in years back and read something about the origin of that disclaimer.
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