To use simply insert an 8g gas bulb and screw down onto the valve on the top of the barrel. It is important that you have a pin valve as this won't work with the standard S30 valves.
S30 Bulb Holder For 8g CO2 Pin Valve - For Homebrew Barrels / Beer Kegs
Plastic Bulb Holder for 8 grm CO2 bulb FREE P&P
Black Plastic CO2 Bulb Holder for Keg / Barrel - for 8 gram size cartridges
Plastic Bulb Holder For 8g Co2 System For Homebrew Pressure Barrels Beer Kegs
4" King Keg Cap + Washer + 8gm CO2 Bulb Injection Pin Valve + Bulb Holder Unused
