Cylindrical plastic or steel keg has depressed, circular central section in its top and pair of outlets mounted in its outer raised peripheral section

摘要

The cylindrical plastic or steel keg has a depressed, circular central section (3) in its top. A pair of outlets are mounted in the outer raised peripheral section (4). A transverse drainage groove (6) across the whole width of the top terminates in drainage holes (9) in a collar (7) around the top.