This kit contains the 4 parts of a pin valve that need replacing at regular intervals in order to keep the valve on your pressure keg working efficiently.
1) The black gasket for seating the valve in the cap.
2) The large rubber that vents excess pressure from the keg when required.
3) The small rubber that acts as a non return valve when injecting gas into the keg.
4) The small O ring that seals the mouth of the valve
It is recommended that all these are replaced together.