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Refillable 12 gram CO2 capsules

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Refillable 12 gram CO2 capsules

Unread postAuthor: jackssmirkingrevenge » Fri Jul 08, 2011 12:16 am

Found these diagrams during an unrelated search, I remember there had been some discussion about converting CO<sub>2</sub> capsules for re-use so they might be of interest. Some good regulator ideas too.
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Unread postAuthor: warhead052 » Fri Jul 08, 2011 8:33 am

Wow, those look so easy I could probably do it. :wink:
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Unread postAuthor: Technician1002 » Fri Jul 08, 2011 11:56 am

The problem with CO2 is it's expansion with temperature. If the cartridge is overfilled and it does not have a proper pressure relief, it will fail in a spectacular fashion. Commercial cartridges have the seal that will blow out when overheated. They are also filled by weight. Most home users do not have the tools to inject a metered weight of CO2 into a cartridge. This makes it not so safe.
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Unread postAuthor: jackssmirkingrevenge » Fri Jul 08, 2011 12:00 pm

Tech, these are meant to be refilled with air as a substitute for buying disposable 12 gram CO<sub>2</sub> cartridges, rather than refilled with CO<sub>2</sub>

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Unread postAuthor: Fnord » Fri Jul 08, 2011 12:53 pm

I never thought about it before, but when I read your post I thought "hmm... I wonder if you could just tap schrader threads into the inside of the neck. Seems like a suitable inside diameter...".
So yeah, I guess we all think alike around here :D
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