The Micro Matic L-system has a unique valve construction for soft drinks, with round flange and a double valve operation. The spear has been improved with a unique color and year coding for preventive maintenance. The neck is an integrated part of the keg. The spear is assembled into the neck body, after which the upper part is inscrewed to fit the circlip into the groove and lock the complete extractor valve into the container. The L-system is with a tamper evident ring.