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uh oh..I want to make sure that this pipe is pressure rated!

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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uh oh..I want to make sure that this pipe is pressure rated!

Unread postAuthor: JDP12 » Thu Apr 26, 2007 4:47 pm

Well hello once again..

I know I've been bouncing around quite a few different gun ideas for my next gun..But I've decided to build a gun based on the Vogt pattern..

But first I think I have a little problem..

The piping on my old gun for my chamber..I am not sure if it is pressure rated or not!!!!!! (I painted over it..) Even though it's held up to many shots at 60 psi..I am still going to replace all of my piping...
EDIT: I found some left over..and it says DWV Sch 40..is that safe?? There's no pressure rating..

So I am going to be buying some new piping..Which is pretty good news..even if it costs me extra..And I just want to make sure that this should be okay..Even though it says it is rated to 130 psi..I just want to double check..Just being cautious..It's on www.mcmaster.com..part number 49035K31..

Also..I would be buying other sizes of piping... 2" and 1.5" and 1"..So just want to make sure that this schedule 40 is right...

<img src="http://www.mcmaster.com/param/images/plasticppf/2426k71_180x120.gif">


Pipe Fittings > Shape > Pipe Type > Schedule > Low PressurePlastic Pipe Fittings and Pipe
This product matches all of your selections.

Part Number: 49035K31 $62.33 Each
Shape
Pipe

Schedule
40

Pipe Type
Unthreaded

Pipe Size
3"

Pipe to Pipe Connection
Unthreaded (pipe)

Material
PVC

Maximum Pressure (psi)
130

Length
4'

Inside Diameter
3.042"

Perforation Type
Solid Pipe

Color
Transparent

Maximum Temperature
140° F

Specifications Met
American Society for Testing and Materials (ASTM) and Food and Drug Administration (FDA) and National Sanitation Foundation (NSF) and Underwriters Laboratories (UL)

ASTM Specification
ASTM D1784

NSF Specification
NSF 61
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Unread postAuthor: frankrede » Thu Apr 26, 2007 5:09 pm

That is clear pvc.
A good price for it too.
60$ for 4 ft of 3" clear?
Thats a good price, minus shipping.

and if theres no nsf-pw on your pipe then don't use it on a pneumatic.

Even if its pressure rated it should have a nsf-dwv.
But always look for a PW
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Re: uh oh..I want to make sure that this pipe is pressure ra

Unread postAuthor: Mr.Russ » Thu Apr 26, 2007 5:15 pm

ilovetoblowthingsup wrote:Pipe Fittings > Shape > Pipe Type > Schedule > Low PressurePlastic Pipe Fittings and Pipe


That is all?
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Unread postAuthor: JDP12 » Thu Apr 26, 2007 5:16 pm

Oops well I didn't mean to get clear..I didnt order it yet though...And yea my pipe doesn't have those letters..So I am stopping with the gun and ordering new PVC...THanks a bunch for the info..And that pipe is good for pressure then correct?

Mr. Russ...

I don't know..I couldn't find anything else..It just said pressure ratings...If you could help me I'd appreciate it.

EDIT: I tried to click on white pipe..But it didnt show a pressure rating//
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Last edited by JDP12 on Thu Apr 26, 2007 5:20 pm, edited 1 time in total.
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Unread postAuthor: Mr.Russ » Thu Apr 26, 2007 5:19 pm

Ill have a look and see.
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Unread postAuthor: JDP12 » Thu Apr 26, 2007 5:21 pm

K thanks..Here's the specs on the solid white pipe- there's just no pressure rating.


Shape
Pipe

Schedule
40

Pipe Type
Unthreaded

Pipe Size
3"

Pipe to Pipe Connection
Unthreaded (pipe)

Material
PVC

Length
5'

Inside Diameter
3.042"

Outside Diameter
3.5"

Perforation Type
Solid Pipe

Color
White

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

Specifications Met
American Society for Testing and Materials (ASTM) and Canadian Standards Association (CSA) and National Sanitation Foundation (NSF)

ASTM Specification
ASTM D1784 and ASTM D1785

NSF Specification
NSF 61

CSA Specification
CSA B137.3-99
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Unread postAuthor: Mr.Russ » Thu Apr 26, 2007 5:23 pm

alright well i just looked down the page and it says this

Maximum Pressure (psi)
PSI (pounds per square inch) is the amount of pressure a pipe fitting can endure.
Low Pressure
60
75
150
200

So I would guess it would be the same as normal sch40
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Unread postAuthor: JDP12 » Thu Apr 26, 2007 5:24 pm

So is that stuff that I just posted okay then..?? The solid white stuff?

If you don't know what I mean..just go to www.mcmaster.com and search for part number 48925K97

HOLY COW!!!!! IT SAYS THAT AT 73 DEGREES FAHRENHEIT IT CAN ENDURE 260 PSI!!!!!!!

SWEEEEETT!!!!!!! :D :D :D
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Last edited by JDP12 on Thu Apr 26, 2007 5:27 pm, edited 1 time in total.
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Unread postAuthor: Mr.Russ » Thu Apr 26, 2007 5:27 pm

I would just go with what you had before, it is sch 40 and unless its cell core i wouldnt think it could be that bad?

It stated it was low pressure, But the 'low pressure' qualifications ranged from 60 to 200.


Maybe wait for someone with better knowledge then me to comment.

PS congrats on 100th post :D
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Unread postAuthor: JDP12 » Thu Apr 26, 2007 5:29 pm

K thanks a lot Mr.Russ for all your help...And for the congrats...Thanks to everyone who has helped me for everything....

And no it says its solid..I believe that means its not cellular core..Does anyone have input on that fact that it says it has a maximum of 260 psi??

That seems like a lot for 3" Sch 40 pipe...
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Unread postAuthor: frankrede » Thu Apr 26, 2007 6:14 pm

Sounds right considering 2" can hold 280 psi.
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Unread postAuthor: JDP12 » Thu Apr 26, 2007 6:19 pm

K..So all of mcmaster's schedule 40 pipe should be safe then?
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Unread postAuthor: Velocity » Thu Apr 26, 2007 6:26 pm

NSF-61= good for pneumatics
ASTM 1785= good for pneumatics
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Unread postAuthor: JDP12 » Thu Apr 26, 2007 6:34 pm

I take that as a yes then??

Thanks
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