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pvc chemical resitance question

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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pvc chemical resitance question

Unread postAuthor: singularity » Mon Jul 14, 2008 7:46 pm

now lets just say i wanted to store gasoline in pvc under pressure... how bad of an idea would that be?

the pvc is 3" and caped on both ends with a couple 1/4" threaded ports in it. the pvc tank would be pressurized with 40 to 60 psi of co2. i am aware gasoline eats away pvc but my question is more of how quickly does gas dissolve it? and if this is a flat out terrible idea can you suggest a liquid that is more flammable than denatured alcohol and rubbing alcohol yet does not eat away pvc? and btw propane has already been tested and although extremely cool it does not have the range i desire
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Unread postAuthor: Solar » Mon Jul 14, 2008 7:49 pm

Had some paintball goo leave a strange rippled deformation pattern through the ABS barrel.
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Unread postAuthor: CS » Mon Jul 14, 2008 7:52 pm

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Unread postAuthor: singularity » Tue Jul 15, 2008 8:51 pm

very helpful, thank you
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Unread postAuthor: MrCrowley » Tue Jul 15, 2008 8:56 pm

Hehe I can guess what this is for :P
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Unread postAuthor: brogdenlaxmiddie » Tue Jul 15, 2008 8:58 pm

MrCrowley wrote:Hehe I can guess what this is for :P


Yes, and I think its something to do with what dragons can do :wink:
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Unread postAuthor: Sticky_Tape » Tue Jul 15, 2008 9:00 pm

Gasp tell me tel me tell me tell me tell me tell me tell me.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: DYI » Tue Jul 15, 2008 9:36 pm

how bad of an idea would that be?


Well that depends: how close will you be to this pressure vessel? Because if it's being placed where I think it will be, the answer to your question is "very".

Think about it this way: (potentially weak pipe with poor failure characteristics + gasoline + ample amounts of fire and radiant heat) * strapped to your back = ?
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Unread postAuthor: SpudFarm » Tue Jul 15, 2008 10:16 pm

what crowley?
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Unread postAuthor: Killjoy » Tue Jul 15, 2008 10:16 pm

Think about it this way: (potentially weak pipe with poor failure characteristics + gasoline + ample amounts of fire and radiant heat) * strapped to your back = ?


Barbecue?

Edit: Where the hell did Crowley's post go?
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Unread postAuthor: SpudFarm » Tue Jul 15, 2008 10:19 pm

i think he deleted his own post :) the power of a moderator!
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Unread postAuthor: biggsauce » Tue Jul 15, 2008 10:26 pm

:P I have a similar project underway... :D

Have you thought of coating the inside of the tank with something? I haven't gotten around to this stuff, but I'm hopeful this will work

http://www.revzilla.com/product/kreem-fuel-tank-liner-combo-pak


Either this stuff works, or I move to a metal tank... goodluck
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Unread postAuthor: brogdenlaxmiddie » Tue Jul 15, 2008 11:11 pm

I vote metal tank. But find a way to ground it and get rid of static electricity.
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Unread postAuthor: MrCrowley » Tue Jul 15, 2008 11:17 pm

Ground it to your wrist or something, like those computer wrist bands. You attach to the computer and your wrist while you work on them so you don't short circuit anything or something like that.
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Unread postAuthor: kablooie » Tue Jul 15, 2008 11:18 pm

That would be cool if you could ground it by wearing metal cleats and having the tank connected with a wire to them. If that's how a ground works...

What about using one of those pretty cheap husky air tanks? Although I don't know how heavy they are.
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