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Old 09-02-2008, 05:20 AM   #1 (permalink)
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Question Wierd CO2 Problem

So my friend aired up his gun with the tac5m, he unscrewed it a few moments later, but the pin valve did not close, so it was letting out air. Though the burst disk did not go off, and it is was inside air; conditioned(about 70*)... He screwed it back on thinking he should just empty the tank just in case.. After firing a few shots, he took it off again and it was sealed again... It was not out of air after the few shots. Any suggestions? This one even has me on the confused side.

EDIT: After reading that, oh god its 4:20AM. What basic problem was, is that the pin valve did not close after it was removed from the ASA. So it was blowing out air, the burst disk did not blow out...
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Old 09-02-2008, 06:38 AM   #2 (permalink)
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As you probobly know, the co2 tank has liquid co2. It can only exist as a liquid when under pressure.

When you unscrew a co2 tank, it should ALWAYS be oriented upward. This prevents the liquid in the tank from flooding into the valve. When this happens, the liquid flashes to dry-ice, and can prevent the valve from closing, causing what you saw.

Pretty common regardless. If this happens again, hold the tank pointed upward, and tap the pin on the pin valve with something plastic, like the handle of a screwdriver. It will "pop" the valve open for a fraction of a second, and usually blow out the dry-ice that has clogged up the valve.
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Old 09-02-2008, 07:49 PM   #3 (permalink)
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Alright, thanks Lovecraft.
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