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is there a way to make a old propane tank into a air tank

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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is there a way to make a old propane tank into a air tank

Unread postAuthor: 666lucky693 » Sun Jul 01, 2007 1:06 am

i was wondering if u could use an old propane torch tank as a small air tank or use a big propane tank as a air tank if any one knows how send me the directions to do it cause it would be useful for my small pneumatic
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Unread postAuthor: hi » Sun Jul 01, 2007 1:11 am

you could, but you would have to get the check valve out.

the problem is that they put the chech valve in, then weld it shut.

also, the threads are not npt threads, so you would have trouble attaching it to a pipe with out it leaking. jb weld would work.

in the end it probably isnt worth is, though you can try.
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Unread postAuthor: 666lucky693 » Sun Jul 01, 2007 1:12 am

what do u mean by a check valve
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Unread postAuthor: hi » Sun Jul 01, 2007 1:18 am

it a one way valve. look it up, they are very simple.
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"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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Unread postAuthor: 666lucky693 » Sun Jul 01, 2007 1:20 am

o i was thinking of a way using a torch attachment
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Unread postAuthor: hi » Sun Jul 01, 2007 1:23 am

that would be even harder...... even then, that isnt npt threads. that would fill extreamly slowly.
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"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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Unread postAuthor: 666lucky693 » Sun Jul 01, 2007 1:27 am

o i guess it would do u think it would be easer on a big tank from a grill
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Unread postAuthor: hi » Sun Jul 01, 2007 1:30 am

i would think it would be easyer on an air compresser.
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"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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Unread postAuthor: chaos » Sun Jul 01, 2007 1:32 am

may we ask what you are using this tank for? main chamber or a fill station? or something else? on a small pneumatic yo would probably be better off buying a CO2 or HPA tank and regulator to accompany.
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Unread postAuthor: 666lucky693 » Sun Jul 01, 2007 1:47 am

i was gonna use it as a fill station at first i was gonna use a small one so when i have a paintball war i could use it to fill my paintball pneumatic to use it as a rocket launcher and if not use a tank used for a grill just as a place to fill up
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Unread postAuthor: chaos » Sun Jul 01, 2007 2:12 am

what if you used propane for a gas? not lpg, propane if your in aus lpg is commonly used for bbq/grill gas, its a bit of a mix of propane and butane which can be quite smelly, but if its propane it doesnt smell near as much, and it dont cost much to fill up :wink:
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Unread postAuthor: 666lucky693 » Sun Jul 01, 2007 2:14 am

what are u talking bout i want to fill the tank with air
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Unread postAuthor: chaos » Sun Jul 01, 2007 2:22 am

i was talking about an alternative to air

EG: http://www.spudfiles.com/forums/ultimat ... t7860.html

so instead of using compressed air you could use propane which can be regulated, but at around 20 degrees C is at a constant pressure of about 100psi.

im just trying to show you an alternative gas for a fill station.

edit: 20 degrees C is bout 110psi*
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Unread postAuthor: 666lucky693 » Sun Jul 01, 2007 2:28 am

o ic what u mean but i just want to use air cause i have a big and a small tank that are old and empty that are not being used thats y i had the idea
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Unread postAuthor: chaos » Sun Jul 01, 2007 2:35 am

oh k, well if ya want a lot of shots go for the propane setup, there will be the same pressure as long as there is liquid propane in the tank, if you used air the pressure would drop after each shot until it has no pressure left.

its really your choice, good luck with it all.

~chaos
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