Bung hole closure for large beer kegs has rubber bung socket and stopper with separate cap with small ventilation openings to keep out dirt whilst enabling beer to be drawn off

摘要

The closure comprises a rubber bung socket (1) fitted from outside into the filling opening (12) and closed by a stopper (2) inserted from below. Ventilation openings are provided on the separate cap (3) of the stopper (2). Expanding elements can be provided on the cap so that when drawing the cap out from the stopper the expanding elements open.