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Re:CO2



<< You may be missing the high pressure gauge. No need to weigh the tank, 
just look  at the gauge once a week or so. While there is still liquid CO2 in 
the tank, the 
 tank pressure stays constant (900 PSI or so). When enough CO2 has been used, 
the  liquid is gone and you are left with pure gas >>

Thanks George. That first gauge reads a constant *60 Bars* -- which I assume 
is  60 x the barometric pressure at sea level. Yes?, and  should I also 
presume that that 1.3  on the second gauge which I can control with a knob in 
the middle) is the working pressure of 1.3 barometric stepped down from 60?  
And then there is the needle valve for  accurately controlling the bubble 
output.

David