to dsemen

[dseman]

Weldergary,

My info. from national welder's supply for CO2 indicates that the vapor density at 32F is 0.12341 lbs/ cuft of gas. Or, 8.1 cf of CO2 per 1lb of liquid. The shop cylinders these guys sell are either CD20,CD50, CD75, and CD100. The CD20 is called a 20lb bottle because it holds 20lbs of liquid CO2. So that bottle should provide you with about 162 cf of gas. I think it was brianw who quoted a vapor density of around 8.7 cf per lb of liquid. So a conservative measure of 8cf per lb of CO2 is probably a good approximation.

-dseman

[weldergary]

welding c02 is sold in 5lb 10 lb 20lb 50lb i called two welding stores but they didnt know how many cubic feet they hold