Pneumatic Help.

A place for general potato gun questions and discussions.
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pneumaticspud
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Wed Aug 22, 2007 5:10 pm

Ok i am buying my PVC pipes from lowes for my gun.
i am going to have 2 ''3 inch wide, 2 feet and a half long'' air tanks for the gun. and there are both gonna join to meet the 2 inch barrel. how do i reduce the 3 inch PVC pipe to a 2 inch PVC pipe?
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pvcmaster
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Wed Aug 22, 2007 5:36 pm

You are going to need 3" x 2" reducing bushings, which are not available at Lowe's. You might be able to find them at another hardware store, but if you can't, you can always get them at Mcmaster-Carr:

Part number 4880K612 at mcmaster.com

Just make sure you get sch 40 bushings, not bell reducers, which are usually DWV.
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DYI
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Wed Aug 22, 2007 5:36 pm

By using a 3"-2" bushing. Just make sure it's pressure rated.
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MisterSteve124
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Wed Aug 22, 2007 5:55 pm

Yeah basically you can't buy any fittings at lowes because they aren't meant to hold pressure.
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pneumaticspud
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Wed Aug 22, 2007 6:01 pm

what stores would have them?
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DYI
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Wed Aug 22, 2007 6:12 pm

If you are in the U.S., an irrigation supply or plumbing supply would be your best bet. If you live in Canada, then I wish you the best of luck in your doomed task.

On a side note, McMaster (which won't ship to Canada), carries pressure rated, SCH 80 bell reducers.
ispudder
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Wed Aug 22, 2007 6:14 pm

pneumaticspud wrote:what stores would have them?
best bet is either McMasters, Grainger, or MSC Industrial Supply.
SuddeN DeatH
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DYI
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Wed Aug 22, 2007 6:16 pm

Grainger won't sell to individuals, and McMaster-Carr won't ship outside the U.S., just to warn you.
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pneumaticspud
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Wed Aug 22, 2007 7:24 pm

i live in the US. so ill check a plumbing store. thanks
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thespeedycicada
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Wed Aug 22, 2007 7:57 pm

i got a 3 inch to 1.5 inch at home depot so you migh be able to find it there just might be cheaper.
pyrogeek
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Wed Aug 22, 2007 8:54 pm

Lowes doesn't sell pressure rated PVC. They only had DWV last time I checked.
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hi
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Wed Aug 22, 2007 9:12 pm

pyrogeek wrote:Lowes doesn't sell pressure rated PVC. They only had DWV last time I checked.
the lowes here has pressure rated stuff. its 2'' and under though. its a limited selection, but what they have is pressure rated where i live.
"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

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silverdooty
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Wed Aug 22, 2007 9:15 pm

the Lowes in my town has NSF-PW and no DWV. your best bet is to check each fitting.
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MisterSteve124
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Wed Aug 22, 2007 9:19 pm

They sell pressure rated pvc pipe, not most of the fittings though. Just because its DWV doesnt mean its not pressure rated.
pyrogeek
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Wed Aug 22, 2007 9:21 pm

No, the one near where I live sells only cell core DWV. I didn't check smaller sizes, but I remember looking for 3inch and they didn't have anything useful.
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