As an afterthought, I retract that. The flat surface on the regulator MAY fit flatly against the flat outside ring on the valve body of an O2 tank, but be sure to use a flat fiber or teflon washer. Just have to try it and see. It will either work, or it won't.
Steve
"Gunner Asch" wrote: Hummm...I may well be wrong. Frankly..I seldom ever pay attention to
^^^^^^^^^^^^^^^^^^^^^^ I don't see why a CO2 regulator even has a high side gauge. The tank pressure is related to temperature, not fullness, as long as there is some liquid present. That's also true of propane and butane, and that's why weigh the tanks, or resort to tricky methods to know what you have. One method is to look at the frost line while the gas is being used.
"Mike Henry" wrote: The fitting looks nothing like those for oxygen in one of the links I posted
^^^^^^^^^^^^^^^^^^ However, it does look a lot like the fittings on medical oxygen tanks. They use a flat Teflon washer.
I think it is for mounting the regulator to a manifold system, like at a production shop or a school. Several torches piped to same source.
I have a single stage acetylene regulator with the same kind of fitting. If you check the threads it probably fits 1/2" straight pipe threads.
Paul K. Dickman
CO2 fitting.
Sometimes CO2 cylinders have a helium head. I have used CO2 cylinders that begin with 1200 PSI.
Also, everyone probably knows this but bourdon tube gauges are meant to operate at half max pressure. The company probably just used the most common regulator they had that had about 2000PSI max. Close enough.
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