How many kegs will I get from a CO2 tank?


As a general rule of thumb, it takes about a ½ Lb of CO2 to dispense a ¼ barrel of draft beer and 1 Lb of CO2to dispense a ½ barrel of draft beer. This table lists the approximate number of kegs that can be dispensed from each size of CO2 cylinder.
CO2 Tanks
2-1/2 Pound Cylinder 5 Pound Cylinder 10 Pound Cylinder 15 Pound Cylinder 20 Pound Cylinder
Home Brew (5.00 Gallon) 7-11 15-22 31-44 46-66 62-87
Sixth Barrel (5.23 Gallon) 7-11 14-21 29-42 44-63 59-83
Quarter Barrel (7.75 Gallon) 5-7 10-14 20-28 30-42 40-56
Half Barrel (15.50 Gallon) 2-4 5-7 10-14 15-21 20-28
A gas tank that is properly filled should read about 750 PSIG when the cylinder is at a 72°F temperature. CO2 gas pressure increases when it is exposed to heat, so if the gas tank temperature is above 72°F, the pressure will read higher than 750 PSIG. If the gas tank temperature is colder then 72°F, the pressure will read lower then 750 PSIG.The tank pressure should read 750 PSIG until the liquid CO2 in the cylinder is gone, and the tank is almost empty. A decreasing pressure indicates the cylinder is nearly empty.

*Note: this depends on properly carbonating your beer…many will run reduced pressures in their meisters for less “head” & therefore will get a few more kegs/lb of co2.  This is a general guide.

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