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Co2 tank threads!

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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Co2 tank threads!

Unread postAuthor: iPaintball » Fri Apr 13, 2007 2:30 pm

I'm considering using a 10 oz paintball Co2 tank as a chamber for my in-the-works qev marble gun. I removed the pin valve, but I can't seem to find the thread size of the actual cylinder anywhere! If anyone knows the thread size, please tell me! I need help!
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Unread postAuthor: Scope » Fri Apr 13, 2007 3:17 pm

CGA 320 i believe

Edit... yes it is
palmers has an addapter to 1/8
https://www.palmer-pursuit.com/ecom/product_info.php/products_id/451?osCsid=a51e50d9cb10adbac2a2eaf55d1c9fea
They also have a stainless version... but its double priced
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Unread postAuthor: iPaintball » Fri Apr 13, 2007 3:30 pm

No. CGA 320 is the the thread size for the outlet threads (ASA).
That adapter screws into a bottom line. I need to know the threads of the actual cylinder...
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Unread postAuthor: iPaintball » Fri Apr 13, 2007 4:54 pm

Nobody knows?
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Unread postAuthor: Scope » Fri Apr 13, 2007 9:21 pm

Take your pin valve drill it out, and tap it.. with a NPT thread


Or email Mr.Palmer... or Doc from docsmachine.com

one of them will deffinalty know...
or you can email one of the airsmiths at PTI. paintball training institute.
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Unread postAuthor: iPaintball » Fri Apr 13, 2007 9:26 pm

Wow, I'm ashamed that I didn't think of that myself...Thanks Scope!
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Unread postAuthor: Scope » Fri Apr 13, 2007 9:58 pm

Haha no problem!!
hope it works for ya
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Unread postAuthor: iPaintball » Fri Apr 13, 2007 10:26 pm

Thanks. if it does work, it'll look awesome...
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Unread postAuthor: Scope » Fri Apr 13, 2007 10:28 pm

If it works well for you just tell me because i have a bummed 9oz
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Unread postAuthor: iPaintball » Fri Apr 13, 2007 10:29 pm

I'll be shure to.
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Unread postAuthor: Kenny_McCormic » Sat Apr 14, 2007 7:15 pm

you could build a sweet hybrid with one of thoose bottles that or if u make a pnumatic run it off unreged scuba air thoose c02 tanks are made to hold 3k psi at least cause the burst disk on the pin valve pops at 3k
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Unread postAuthor: spudthug » Sat Apr 14, 2007 8:22 pm

why would u make a hybrid out of a c02 containtor...and using unregulated scuba tank is incredibly stupid..
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: frankrede » Sat Apr 14, 2007 10:13 pm

A co2 container would make an excellent chamber for a hybrid spudthug.
Why wouldn't it?
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Current project: Afghanistan deployment
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Unread postAuthor: )DEMON( » Sun Apr 15, 2007 2:53 am

The size is 1/2" BSP or the British national pipe thread. We use BSP fittings here, not NPT. 8)
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Forever dreaming...
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Unread postAuthor: Kenny_McCormic » Sun Apr 15, 2007 8:53 am

spudthug wrote:why would u make a hybrid out of a c02 containtor...and using unregulated scuba tank is incredibly stupid..
you would make a hybrid from a co2 tank because it could probably take a 50x mix without blowing up and using unregged scuba in a gun with a metal chamber rated to 3kpsi is not stupid seeing a completly full to the brim scuba tank is only 3k psi
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