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CO2 pressure

> CONJECTURE FOLLOWS...........My guess is that the size of the bottle may
> have nothing to do with head pressure.  In other words, it takes the same
> amount of pressure to fill a 9oz. as a 20lbs. bottle because the density of
> gas is the same in any size bottle ??   _OR_   does this mean a 1lbs. bottle
> runs at ~360psi..?? or ~22.5psi. per Oz?  Given that,  a 9oz.. bottle
> would run at ~202.5psi??  I don't think this the size bottle to head psi is
> linear??  Hopefully an expert can step in here.
> Tom Brennan

The pressure in both large and small cylinders is the same. It is the
pressure dictated by the equillibrium between gas and liquid at room
temperature for CO2, and has nothing to do with the size of the
Harvey Schneider
<harvsch at earthlink_net>