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Green Gas Tank

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Green Gas Tank

Unread postAuthor: blackhawk13 » Fri Jul 23, 2010 1:01 pm

I am getting a new gbb airsoft pistol soon so I decided to make a small tank that can hold green gas/propane but is smaller than the propane tank I have. I plan to use a replacement fill valve and a propane adaptor for the fill valves. I plan to make it about 1X4 inches. What materials would be best to use for this? I am sorry if this is not the right section but I was unsure where to put it. Thanks for any and all help.
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Unread postAuthor: clemsonguy1125 » Fri Jul 23, 2010 1:11 pm

Well whatever you use needs to be able to hold at least 200 PSI, so PVC and ABS are out, copper could be used but thats expensive for larger diameter tanks, galvinized steel is cheap and can be found at local hardware store, the main problem with thats is its heavy. A regular camping propane tank would be lighter.
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Unread postAuthor: spudtyrrant » Fri Jul 23, 2010 1:30 pm

you get so may shots out of propane tanks, because they hold liquid propane. a separate gaseous tank will not hold too many fills worth of propane and pressure will decrease rapidly
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Unread postAuthor: jonnyboy » Fri Jul 23, 2010 1:58 pm

spudtyrrant wrote:you get so may shots out of propane tanks, because they hold liquid propane. a separate gaseous tank will not hold too many fills worth of propane and pressure will decrease rapidly


Hold the bottle upside down when filling it.
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mobile chernobyl wrote:I can shoot a Canuter Valve off my '82 Chevy Ram F150 AT LEAST 3/4 Mile with 'ma cannon made of soup cans duct taped together, then I just squirt some bacardi 151 in the chamber and hold up my cigarrete lighta and WHOOSH! That thing flies at least 3/4 mile
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Unread postAuthor: spudtyrrant » Fri Jul 23, 2010 2:03 pm

jonnyboy wrote:
spudtyrrant wrote:you get so may shots out of propane tanks, because they hold liquid propane. a separate gaseous tank will not hold too many fills worth of propane and pressure will decrease rapidly


Hold the bottle upside down when filling it.
that works but it gets cold as a mofo and stays cold lol, i have tried it
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Unread postAuthor: blackhawk13 » Fri Jul 23, 2010 2:56 pm

I already have a camping propane tank. The problem is when I am running around the camping tank is to big. I would like to make a small tank that is the size of a small flashlight. If I were to use copper how would I attach the pieces? Sorry if this is a stupid question but I have never used it before
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Unread postAuthor: clemsonguy1125 » Fri Jul 23, 2010 3:01 pm

The best solution would be to solder it but you could use a high strength epoxy or JB Weld
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Unread postAuthor: jonnyboy » Fri Jul 23, 2010 3:03 pm

Epoxy would be my choice, rough up the surfaces first to ensure good adhesion. Or alternatively you could solder the joints or what ever it's called but epoxy should do the job.
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Unread postAuthor: theBOOM » Fri Jul 23, 2010 5:41 pm

Go the safe way and solder it, solder on copper pipe is stronger than epoxy, I have heard of Justforcopper, which is a glue to join copper fittings/pipe, might give that a try if you can't solder.
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Unread postAuthor: blackhawk13 » Fri Jul 23, 2010 10:01 pm

Thanks. I have been meaning to learn to solder for some time and now I have a reason to.
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Unread postAuthor: ramses » Sat Jul 24, 2010 12:03 pm

It's not hard at all... Just clean the pipe and fitting with sand paper, apply flux, heat with propane torch, occasionally poke the joint with solder. Once it melts, fill it up till it drips on your concrete floor, or your leather boot.

It gets harder when soldering heat sensitive things, like ball valves, schraders, etc.
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