PVC Pipe Warning for Austrailan's

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
Butch902
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Wed Jan 05, 2011 3:04 am

I have a warning if your buying your PVC pipe from Bunnings. DO NOT BUY THE PIPE THERE it when BOOM!!!!!! on me at 80 psi after 100 or so shots that was the barrel and that was the only pipe i bought from Bunnings. You can buy the PVC fittings from there that is fine if you wanna buy pipe go to an irrigation store!!!!!!!

( the barrel Exploded at 80 psi after around 100 shots. It shot a 3 inch long pvc bit 10 metre's away from me)
Last edited by Butch902 on Wed Jan 05, 2011 4:15 am, edited 2 times in total.
Butch902
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Wed Jan 05, 2011 3:08 am

The pipe is good there im not trying to make them sound bad. But for SpudGun - Pneumatic gun use's it's not made for it because it is so thin and not pressure rated!
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jackssmirkingrevenge
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Wed Jan 05, 2011 3:15 am

Butch902 wrote:not pressure rated!
Why on earth were you surprised that it blew up then ;)

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hectmarr wrote:You have to make many weapons, because this field is long and short life
Butch902
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Wed Jan 05, 2011 3:20 am

this was for my first ever gun didn't know any better. so about 10mins ago i saw a Discussion someone thinking of buying there PVC pipe from Bunnings (Just a Friendly - helpful Warning)
Last edited by Butch902 on Wed Jan 05, 2011 4:13 am, edited 1 time in total.
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more_eggs
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Wed Jan 05, 2011 3:43 am

Research before builds generally makes them safer...
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jackssmirkingrevenge
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Wed Jan 05, 2011 4:05 am

But warming the pipe will make it less brittle :)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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more_eggs
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Wed Jan 05, 2011 4:10 am

Hahahahahhaha.

Language barrier at its best
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inonickname
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Wed Jan 05, 2011 4:21 am

more_eggs wrote:Research before builds generally makes them safer...
Bunnings sell both thinwall and rated pipe. They tend to keep the rated pipe away from the fittings. You just messed up.
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cfb_rolley
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Wed Jan 05, 2011 5:12 am

I'll add to this one too, while it's generally considered safe enough to use dwv for basic combustion cannons, I don't trust bunnings dwv either. Had a few end caps blow off on the first shot on a very basic spray cannon. Though, pressure rated pipe is rated. Look for the pn#. multiply that number by 14.5 and that gives you a rating in psi. E.g: pn8 = 8x14.5 = rated to 116 psi under normal conditions.
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Davidvaini
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Wed Jan 05, 2011 7:06 pm

cfb_rolley wrote:though, pressure rated pipe is rated. Look for the pn#. multiply that number by 14.5 and that gives you a rating in psi. E.g: pn8 = 8x14.5 = rated to 116 psi under normal conditions.
pn number is bar instead of psi.. multiplying it by 14.5 is just the conversion process to PSI.
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cfb_rolley
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Wed Jan 05, 2011 7:28 pm

Davidvaini wrote:
cfb_rolley wrote:though, pressure rated pipe is rated. Look for the pn#. multiply that number by 14.5 and that gives you a rating in psi. E.g: pn8 = 8x14.5 = rated to 116 psi under normal conditions.
pn number is bar instead of psi.. multiplying it by 14.5 is just the conversion process to PSI.
Yep, but I wouldn't have a clue about converting to kpa though.
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rna_duelers
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Fri Jan 07, 2011 7:13 pm

I've experienced an explosion or 3 with PVC,Pressure pipe and DWV.

Safety pressure ratings are there for a reason,Follow them!

DWV is designed to take a small amount of pressure (gravity mainly) but personaly for anything other then a spray 'n' pray combustion I don't trust it.
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