CO2 w/ AGD guns

[AGD Paint Baller]

at airgun.com it told me that on a e-mag and all other agd guns u cant use co2 but i also heard that u can use it if u have a remote or an anti-siphon co2 tank they will work is that true?

[68magOwner]

i have a 68 mag that i run on co2, but i belive that with the retro/e-mag/X valves you cannot use co2, someone correct me if im wrong, but thats what i think it is

[Grasshopper]

Yea, that's how it works.

Classic vavle will run with CO2 (although much better with N2).

ReTro/X/E-max/etc Valves will only run with N2.

[GoatBoy]

We seem to have had this discussion earlier; the results of which are subject to as much hearsay as lack of reading comprehension skills.

There are two issues here:

1. The technicality of running an RT valve on CO2 as a gas.
2. The PRACTICALITY of running an RT valve from a CO2 source.

I have not gotten a purely definitive answer on this, but it appears you can use CO2 on one of these guys, AS LONG AS IT'S A GAS. Nobody's said that you can't do it; they've only proven that it's impractical to do so.

The RT valve has lots of o-rings on it. O-rings do not like to get cold. See: Challenger disaster.

So the worst thing you can do is feed liquid into there, then fire the gun, because that causes the liquid to change phase and suck thermal energy from the surroundings.


So the problem is with keeping it in gas form. Straight from the Warpig Technical guides:



Lets say you're keeping your pressure around 750PSI. Where does that fall as far as temperature for liquid/gas phase change? Around 60 degrees fahrenheit. If you want to prevent liquid from feeding through your system, everything needs to stay above 60 degrees or so.

And... that's the problem. I'm betting all you need to do is fire the gun 2-3 times before your tank already gets this cold. Then it's just a matter of time before the line feeding your gun gets cold, then it's a straight liquid path to the RT valve.

Expansion chambers and remote hoses basically don't do squat for you. At best, they will give you a few more shots before eventually they too get cold. Then they become as worthless as a "venturi" bolt.


I don't think standard AIR valves are any better at handling liquid per se than an RT valve. They just don't fire as quickly, and they don't recharge as quickly, so you get a little bit of extra slack before the liquid gets there.




That being said, I have run a standard mag on CO2 for many years now with no problems. I made a... special modification to my mag. I could rapid fire and empty most of a hopper continuously while running CO2 on-gun, and no damage to the mag would occur.

[impostal22]

what's this special mod?

[Miscue]

The RT Valve does not work with CO2. You can try it... then AGD can make a couple bucks when you have to get a new parts kit.

[mag hugger]

stupid question

will co2 work on a regular mag with a lvl ten?????

[Taylor Fate]

I have a question on this issue.

I've got a micromag, and a classice valve. I gas up, and the pressure seems too intense for the steel braided line. And c02 exits right from where the line goes into the ASA. Mind you i can fire 2 shots before this happens. So i was wondering if i should adjust the pressure some how?

Edit - The leak is comming from that little hole in the asa, the small one on the side where i'm assuming a guage goes. So whats wrong?

[danheneise]

in that hole where the guage would go there should be a plug if there isn't a guage, my guess would be to get some teflon tape and put some around that little plug and then put the plug back into the hole, it's probably just not sealing enough so the air is able to push it's way out, or just buy a guage and do the same thing.

[Miscue]

Re: stupid question

Originally posted by mag hugger
will co2 work on a regular mag with a lvl ten?????

Of course! It was designed to use CO2... although HPA works a lot better.

[cky shane]

Taylor, depending of what kind of ASA you're talking about, there are two solutions. If you're talking about a hole sized for an elbow/SS input to screw into, then you need get a threaded plug as has been mentioned. You could also attach a guage right there, if you had one with the correct threading, but I suspect its purpose is to allow you to attach your elbow for macroline/SS on the other side (to accomodate left- and right-handed shooters.)

If the hole is very small, it's a vent hole to bleed off the CO2 when you pull off the tank. it prevents CO2 from rushing out, freezing the tank an valve, and freezing your tank open. If its leaking through there while the tank is screwed on, you probably have a small knick in your tank's O ring and need to replace it.

[Taylor Fate]

Ok, i will try replcaing the o-rings on my tanks. Thanks.

[GoatBoy]

Originally posted by Miscue
The RT Valve does not work with CO2. You can try it... then AGD can make a couple bucks when you have to get a new parts kit.

Man, for a Tech Forum, you guys sure don't like to get into details.

[cky shane]

Originally posted by GoatBoy
Man, for a Tech Forum, you guys sure don't like to get into details.

We answered the question. If he had asked why, we would've answered that, too.

[GoatBoy]

Originally posted by cky shane

We answered the question. If he had asked why, we would've answered that, too.

OK. Assuming you could keep liquid CO2 from feeding into an RT valve, why would it not work?