Paintball Cannon Help

[Miles Hardman]

Hello,
Out of a strange turn of events I have my hands on an unregulated paintball tank and a 3000/4500psi air compressor. I was wishing to create a 0>500(?) psi cannon out of this as I think 4500psi would be a very bad Idea (you tell me). My problem is I do not know the size of the threads on the paintball tank accurately and I was wondering if anyone knew, and any places I can get some pipes to fit the size. Also, can someone give me some ideas of what I can do to utilise this massive power?
(Oh and Hi, Im Miles)
Thanks.

[ramses]

Paintball tanks typically have an internal regulator to either 900 or 450 PSI. Attached to this is the fill nipple, which is a quick connect with check valve that leads to the tank before the regulator.

If your tank does not have a regulator, I suggest you simply buy a new tank, or install a regulator like this one and have the bottle re hydro-tested.

You then have a safer output pressure with standard ASA threads that can be adapted to "normal" 1/8" threads with any number of cheap adapters..


An inline regulatorwill let you adjust final pressure after all that.

[Miles Hardman]

Thanks for the help!
But just out of curiosity what is the paintball tank thread size, I wanted to see if I could find another way around it, with a ball valve or something.

[mark.f]

The thread size for a paintball tank valve's outlet is CGA 320... ramses idea would be the best route.

[Lockednloaded]

If you're interested in regulating down your pressure, I have built a gun that operates at up to 700psi, is very compact, and tennis ball bore. It'd make an excellent grenade launcher for paintball

[Miles Hardman]

Can I ask what would happen If I were to launch something at 4500psi?

[warhead052]

If you were to launch a paintball at that pressure, it would probably pop before it even left the barrel.

[Miles Hardman]

I was talking about a ball bearing, By paintball in the title I meant that I was using a paintball tank not that I am actually using paintballs.

[warhead052]

Ah ok. Well a ball bearing would possibly break the sound barrier, depending on the weight and size of it.

[Miles Hardman]

Sounds fun, I have been looking around but I cannot find the sufficient tubing/piping anyway :/.

[Gippeto]

Can I ask what would happen If I were to launch something at 4500psi?

If you were fully prepared .... great and awesome things. 8)

If you were NOT fully prepared...tragic and possibly terminal things.

[Miles Hardman]

Yup, I attempted this once before, could not get the right equipment. I made a 'bomb squad' suit out of layers of clothing and some steel sheets just incase, was all rather crude.

[Gippeto]

Not to be a killjoy, but anything at 4500psi with volume behind it is quite capable of LITERALLY removing limbs/digits or even cutting you completely in two.

Far better to contain it properly or simply do something else than put false hope in something like you describe.

[Miles Hardman]

I suppose... Say, how much force is required to push a man off the ground?
Heh, that would end badly.

[velocity3x]

High pressure can get extremely rude if you aren't capable of containing and controlling it. Don't play with it if you're not capable.