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Using a propane tank as a pressure chamber

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Using a propane tank as a pressure chamber

Unread postAuthor: drac » Thu May 25, 2006 5:26 pm

Basically, you unscrew the torchhead and replace it with a 1/4 by 1/4 male compression fitting. Feed that into a tee, and attach a fill valve and a valve to your barrel. The only problem i think would be if the propane tank had a one way valve (which would cause major problems, and I think they do). What do you guys think?
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Unread postAuthor: WOW!! » Thu May 25, 2006 6:25 pm

Its a good idea, if iam correct the saftey valve is in the head were you light the flame. I think if you unscrew the head, just the head, a small thing will pop out, there is you 1 way thing. I might be wrong. That is a good idea. The big tanks, what is the PSI in 1 of them? You no the one from grills.



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Unread postAuthor: Benny » Fri May 26, 2006 3:33 am

thats a good idea, but im sticking with Pvc.
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Unread postAuthor: boilingleadbath » Fri May 26, 2006 3:59 pm

The tank probably has pretty poor flow in it's standard configuration anyways... most likely, you'd be best off to just cut the entire valve assembly and weld on a pipe nipple.
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Unread postAuthor: WOW!! » Fri May 26, 2006 4:33 pm

You could weld a 1in bung in there and put a modded sprinkler valve on it.
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Unread postAuthor: rna_duelers » Sat May 27, 2006 7:51 am

Well propane liquifies around 97psi or so read in a previous post,so it should hold 100-110 psi easily.
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Unread postAuthor: drac » Sat May 27, 2006 9:27 am

The problem with welding on that tank is that it will make it weaker. Not that it would be too weak to withstand ~100 PSI, but I really don't want to risk it.

EDIT: BTW, this is not for a regular gun, it's for a semi auto BB gun I have some plans for.
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Unread postAuthor: Benny » Sat May 27, 2006 7:41 pm

like the SAFE? because i was thinking it would be good for semi auto, or fully auto, im gonna try it because ive had recent sucsecs with fully/semi auto.
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Unread postAuthor: drac » Sat May 27, 2006 10:39 pm

Somewhat like the SAFE. I have a slightly different plan for the loading mech.
AKA it's not gravity fed

And if that doesn't work i'll make it for a single burst BBMG.
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Unread postAuthor: Rambo » Sun May 28, 2006 1:12 am

If you won't go past 100psi why don't you use a coke bottle?
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