2″ Cap with your choice of valve:
Pin: Will allow for extra gas to be added from disposable CO2 Bulbs if required and doubles as a relief valve to vent any excess pressure. This pin valve will work with sparklet type 8gm gas bulbs.
S30: Is a pressure release/gas injection valve to allow the injection of additional gas into your barrel. It can be fitted to any 2″ or 4″ barrel with a suitable size hole in the barrel lid. It works with Brewgas S30 gas cylinders.