Mini CO2 Tank Pin Valve Fill Adapter from Power Tank. If you want to fill mini CO2 bottles 9, 12, 16, 20, 24 oz. with CGA-323 threads on a Pin Valve or On/Off Valve using our you will need this Pin Valve Fill Adapter. This tool attaches to the end of the fill hose and allows you to open the pin valve for filling.

CGA-320 to CGA-323