Abstract: The closure serves to tightly close the charging hole of a liquid container. It enables the container to be punctured at the charging hole. The closure is provided with a pressure equalizing valve. A tapping bush of an elastic material has a an axial puncturing channel and an axial pressure equalizing channel disposed adjacent to, and spaced from, one another, puncturing channel and the pressure equalizing channel terminating at an end face of the tapping bush next to one another. A flap is integrally articulated to the tapping bush, the flap in its closed position covering the end face, closing the open ends of the channels in a splash-water tight manner, and blocking the pressure equalizing channel in a pressure tight manner. The flap can be manually tilted up and down to unblock the pressure equalizing channel more or less, thereby actuating the pressure equalizing valve.

Abstract: The closure serves to tightly close the charging hole of a liquid container. It enables the container to be punctured at the charging hole. The closure is provided with a pressure equalising valve. A tapping bush of an elastic material has a an axial puncturing channel and an axial pressure equalising channel disposed adjacent to, and spaced from, one another, puncturing channel and the pressure equalising channel terminating at an end face of the tapping bush next to one another. A flap is integrally articulated to the tapping bush, the flap in its closed position covering the end face, closing the open ends of the channels in a splash-water tight manner, and blocking the pressure equalising channel in a pressure tight manner. The flap can be manually tilted up and down to unblock the pressure equalising channel more or less, thereby actuating the pressure equalising valve.