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Re: O2 regulator

Tim asked about using an O2 regulator on a CO2 bottle.

Because O2 tanks are so often used for human breathing, the
fittings are intentionally made to *not fit* tanks of other
kinds of gases -- going so far as, under CGA specs, to have
reverse threads.

I imagine it's easier to find a decent yet very inexpensive
CO2 regulator (which fits a CGA 320 valve) than to find
fittings to adapt normal to reverse threads.

Scott H.

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