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1NSF-Pw1

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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1NSF-Pw1

Unread postAuthor: Pyr0man1ac » Thu Oct 11, 2007 5:53 pm

I was looking on the bottom of a 4" diameter endcap that I got from homedepot, and it says "1NSF-Pw1" ... I was wondering if this is the same as NFS-Pw. (I assume it is...) Thanks. I was also wondering if NFS-DWV is the same as NFS-Pw, which I doubt because it has DWV on it. Thanks also...
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Unread postAuthor: HaiThar » Thu Oct 11, 2007 6:10 pm

NFS-DWV and NFS-PW are certaintly different!

DWV is Drain Waste Vent IIRC. It is for gravity flow applications and therefore NOT suitable for a pressurized system(i.e. a pneumatic spudgun)

PW is Pressurized Water(?) and is meant to handle water pressure.

But ask someone more experienced like noname...
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Unread postAuthor: Pyr0man1ac » Thu Oct 11, 2007 6:13 pm

That I was relatively certain... thanks for the confirm. I might be going to Home Depot tonight to buy more parts. 1NFS-Pw1?
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Unread postAuthor: HaiThar » Thu Oct 11, 2007 6:32 pm

I think its okay...Maybe do a Wikipedia search on it?
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Unread postAuthor: mark.f » Thu Oct 11, 2007 6:38 pm

What's the ASTM rating on it? If it's pressure rated schedule 40 it should say D2466.

NSF ratings are for sanitation purposes, believe it or not. If you want to get technical and split hairs, you COULD have a pressure rated fitting that is rated by the NSF as DWV, and you could have a non pressure-rated fitting that is rated by the NSF as PW. Not very likely, but it's not wrong.

DWV is for Drain, Waste, and Vent. PW is for Potable Water.
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Unread postAuthor: Pyr0man1ac » Thu Oct 11, 2007 6:44 pm

It is infact schedule 40... the number on it does also say d2466. Thank you very much for your help both HaiThar and markfh11q.
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Unread postAuthor: DYI » Thu Oct 11, 2007 6:48 pm

There is DWV copper that is often rated for over 200 psi. I have never seen a non-pressure rated PW fitting, but they probably do exist. For PVC pipe however, DWV essentially means no pressure rating, or a very low one (5-15 psi or so).
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Unread postAuthor: ammosmoke » Thu Oct 11, 2007 7:12 pm

Does the pipe have a pressure rating? If it has a pressure rating you are most definitely fine.
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Unread postAuthor: mark.f » Fri Oct 12, 2007 5:42 am

He was asking about a fitting, not a piece of pipe. They don't print pressure ratings, (as in xxx PSI), on fittings.

It does scare me that this cap came from Home Depot, though. If it does say ASTM D2466, then I guess it's good then. As a final test, can you measure the socket depth right quick?
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