The CO2 Injector System (2" cap, valve, and 2 x 8g bulbs) is a complete pressurisation kit for 2" necked pressure barrels. It includes the cap, pressure valve, and two 8g CO2 bulbs needed to inject CO2 into your barrel and maintain the serving pressure required to dispense home brew beer cleanly.
Use with LISS CO2 Chargers for refills. Compatible with the King Keg and 5 Gallon White Barrel. Also see: CO2 Bulb Holder.