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Old 03-25-2013, 01:41 PM   #1 (permalink)
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What kind of permanent damage can CO2 do to an automag rt valve?

I'm going to be buying some rt valves off a guy, and I'm concerned he used co2 on them. What kind if permanent damage that cannot be fixed can this do? Or does it just kill the o rings? O rings aren't an issue, I got a ton. If it does do permanent damage, what should I look for to see if he used co2 on them?
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Old 03-25-2013, 02:33 PM   #2 (permalink)
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Originally Posted by CJOttawa View Post
o-ring damage
Agreed
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Since this thread started with boobs what are we supposed to derail it with?
Stock class = 12grams and a stick feed. End discussion.
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Old 03-25-2013, 04:12 PM   #3 (permalink)
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Originally Posted by CJOttawa View Post
It won't damage the valve but it might cause it to fill up with liquid or solid CO2 and cease to operate until warmed up. The issue is the recharge rate which will cause the CO2 to condense immediately.

The worst that'll happen is o-ring damage and a temporarily non-shooting gun.
Actually the true problem is that the air well heats up as you shoot strings with RT or X-Valve. So if you shoot a string of more than 3 shots or so, without stopping for a bit, you will get pressure spikes as the Co2 heats up and increases in pressure, resulting in FPS spikes. This is also the reason we had special chrony techniques for R/T, I wonder how many people remember them.
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Old 03-25-2013, 04:41 PM   #4 (permalink)
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The only permanent damage(other than orings) I can think of would be to the reg piston. If heavily abused with CO2, the pressure spikes could possibly cause it to wear out, though very unlikely.
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Old 03-27-2013, 07:18 PM   #5 (permalink)
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Originally Posted by Shane-O View Post
This is also the reason we had special chrony techniques for R/T, I wonder how many people remember them.
hold trigger down and release right before firing over the chrony to simulate rapid fire... gotta chrony the emag in mech mode, too bad it never works.
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Old 03-27-2013, 11:06 PM   #6 (permalink)
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OMG did it melt the orings! Turned the orings into freaking gummy bears!

Will let you know how it's working after I get a rebuild kit (or part one together from various hardware stores).
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Old 03-28-2013, 11:48 AM   #7 (permalink)
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hold trigger down and release right before firing over the chrony to simulate rapid fire... gotta chrony the emag in mech mode, too bad it never works.
Almost correct. Hold down trigger, shoot and hold down again.
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Old 03-28-2013, 11:52 AM   #8 (permalink)
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OMG did it melt the orings! Turned the orings into freaking gummy bears!

Will let you know how it's working after I get a rebuild kit (or part one together from various hardware stores).
Co2 Did not do that, age of your o-rings and possibly wrong lube used did. You want paintball gun oil (no grease) or air tool oil. Do not use any o-ring from the hardware store, the AGD parts are Urethane o-rings, which is want you need. Black buna o-rings will not hold up, do not use them.
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Old 03-29-2013, 09:54 AM   #9 (permalink)
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I have always heard that it only causes a problem in ONE of the orings. All the others are urethane and are unnafected. The problem oring is the red valve chamber oring. You know, the one that does not come in the parts kit, is really hard to get, and for extra fun is located behind the power tube in the valve chamber. its welded in place.
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Old 03-29-2013, 11:51 AM   #10 (permalink)
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That red ring is accessible on the X-valve, the power tube screws off, it isnt welded on like the stainless AIR valves. On the AIR valves that seal has no problems with Co2. If it was not for the shoot up possibility's I would use Co2 on an X-valve without worry, as a matter of fact some have used the X-Valve with 12grams successfully.
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