Co2 fittings / air tank

[The Engineer]

Does anyone know what size fitting a 20 oz CO2 tank is (like the ones used in paintball)?

[jon_89]

I am not sure what it is but i do know that it is a very uncommon thread.

[stevenarroyo]

i play paintball

and when i measure the fitting it says 3/4" so search for some 3/4" ASA thread.

[Leonard]

A paintball tank as a very uncommon threading on it : 825x14 NGO

You can buy adapters from Palmer's pursuit shop, but i certainly would not recommend using unregged c02 from a 20 oz bottle!

Look up for those regulators : http://www.palmer-pursuit.com/cart/inde ... cts_id=175

They are relatively expensive compared to most plumbing fittings, but they are totaly worth it, they will get you rid of a heavy compressor and a need for an electrical source AND they have plenty of flow for a small caliber launcher.

Input is female 825x14 NGO (c02 bottle) Output is 1/8 Femelle npt.

[The Engineer]

Thank you SO much!
And obviously yes, I wouldn't use it without a regulator, lol.

[The Engineer]

Oh, I have a question about the adapter listed above:
I looked at the link, but I'm still a little confused about exactly how it connects a CO2 tank to something else...

Also, is there a reason I couldn't use something cheaper like this?

http://www.palmer-pursuit.com/cart/inde ... cts_id=169

[Hubb]

What, exactly, are you trying to do?

[The Engineer]

I'm trying to change a 20 oz CO2 tank to a more common size fitting.

[ShowNoMercy]

So then what? Any regulator will bring it to regular fittings....

[Hubb]

You can remove the adapter and use it that way. The threads on the actual tank are 3/8" NPT.

[ShowNoMercy]

But then that kinda defeats the purpose of having a high pressure vessel if you put low pressure fittings on it.

[The Engineer]

Obviously I'm new to the whole CO2 thing. I'm using the CO2 to power a fully automatic airsoft gun I made which currently has no good gas supply. The gun itself works fine, but none of my tanks (made from PVC) can hold very much air. This is why I'm looking to change to CO2.

[Hubb]

You could choose propane. It operates at much lower pressures and is fairly easy to hook up. That's what Green Gas is anyway (for the most part).

[The Engineer]

I've already thought about propane, but wouldn't the volume be much lower? However, just in case, any idea what adaptors to use for it?

[Hubb]

Well, you won't get as many shots from a propane tank that you would a CO2 tank, but you're using it for airsoft. You will be able to get many shots before the three dollar tank needs to be replaced.

As far as the hookup, well, check the wiki for a propane setup or meter setup.