20 lb. Aluminum CO2 Cylinder, Empty How many kegs of draft beer can be dispensed out of a CO2 tank? Where can I get a CO2 cylinder filled? Features: With Valve Protecting Carrying Handle Specifications: MaterialAluminum Capacity20 lbs. Diameter8" Height27-1/2" Weight (Empty)24-3/4 Lbs. Valve ThreadsCGA-320 (Intended for use with a CO2 Regulator)