Re: airgraver power supply
Monk,
The 20oz co2 tanks will hold up to 800 lbs of pressure and will last me about 8 hrs with general use.
I don't think you can get the same kind of pressure or amount of air in an air tank.
The CO2 is compressed enough that it is in liquid form in the cyninders by time if turns to gas and comes out of the valve it has supplied a much greater volume of "air" than one would ever get a conventional portable air tank to hold using atmospheric air.
Ray
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