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Joining PVC with Hot Glue

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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Joining PVC with Hot Glue

Unread postAuthor: thewarp16 » Sat May 17, 2008 7:38 am

i have been a fan of the hotglue gun since i made my longshot but i am making a pneumatic now and i have no pvc glue so i was wondering wud it be any good for puting together pipes and elbows and that and can anyone tell me the PSI rating of it??

thanks for anyhelp
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Unread postAuthor: bob-a-lu » Sat May 17, 2008 7:46 am

no you will die not really it just wont hold and will blow apart
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Unread postAuthor: sniper hero » Sat May 17, 2008 7:58 am

isn't strong enough
just get pvc glue before you get injured
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Unread postAuthor: jrrdw » Sat May 17, 2008 8:01 am

If you don't all ready know you can look up 'solvent welding' in the Wiki. It's the only way to go when building a PVC pneumatic cannon.
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Unread postAuthor: SpudFarm » Sat May 17, 2008 8:21 am

it is good for 1psi.. mabe 2psi if you use locking screws

that is one of the troubles here in Norway.. you can't get pressure rated PVC and no glue so i have to use ruber gaskets and screws (combustions only)
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Unread postAuthor: bigbob12345 » Sat May 17, 2008 8:27 am

:lol:
Wow this one serious misconception
Im going to have to disagree with spudfarm about the pressure it will hold.
I say it will hold something like 20psi, with it leaking like crazy at anywhere above 5psi.
But if you added screws I say it would hold 200psi or so before bowing off, athough the presssure would leak through the hot glue like nuts.
If you dont want to use pvc cement and primer then epoxy is acceptable at pressures 120psi and below.
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Unread postAuthor: SpudFarm » Sat May 17, 2008 8:33 am

it was something i said to get him understand not to use it :P
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Unread postAuthor: thewarp16 » Sat May 17, 2008 8:34 am

i have tryed using epoxy before and its hopeless or it might be becouse it was very old stuff. i am useing the snap-fit non glue elbows and that anyhow the glues just there to make me feel safe so 20psi you say.

i am trying the hotglue gun with just stander elbows and T`s i will tell you what happens =]
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Unread postAuthor: bigbob12345 » Sat May 17, 2008 8:40 am

What do you mean snap fit?
And wait till JSR(epoxy god) hears that you called epoxy pointless.
Umm and dont just try it, have you ignored what every single person in this thread has said.
Go to some hardware store and buy some pvc cement and primer and some pressure rated "normal" fittings.
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Unread postAuthor: thewarp16 » Sat May 17, 2008 8:44 am

there fittings that im talking about there the ones that cost about 10 times more then normal ones and have small blades inside to stop them coming off and also there are screw on and they have small rubber O rings in.

so how they work the more you tighten the screw the more the blades go into the pipe and will not come off.

=]
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Unread postAuthor: SpudFarm » Sat May 17, 2008 8:45 am

this is one heck of a pointless thread if he don't listen!
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Unread postAuthor: thewarp16 » Sat May 17, 2008 8:51 am

no you don`t understand i am about to go to my local DIY store to get some now =]
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Unread postAuthor: potatoflinger » Sat May 17, 2008 8:54 am

I think that when he says "blades" he really means threads, which would mean that he has threaded pipes and fittings, but I have never seen threaded PVC, except for a few sch. 80 fittings and small pipes.
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Unread postAuthor: thewarp16 » Sat May 17, 2008 8:56 am

thats not what i mean im puting pictures of them on my pc now to upload
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Unread postAuthor: pat123 » Sat May 17, 2008 8:59 am

can you post pics? do you mean threaded fittings?
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