A REPLACEMENT (CLAMP) CLOSURE FOR ALREADY OPENED BOTTLES WITH GAS-CONTAINING DRINK. A ONE-WAY VALVE AND PRESSURE SPRING HAVE BEEN INCLUDED IN THIS CLOSURE. THROUGH A SEPARATE PUMP IS PUMPED AIR INTO THE BOTTLE TO A PARTICULAR PRESSURE. AT HIGH OVERPRESSURE, THE SEALING RUBBER IS PRESSED UP, SO THAT SURFACE GAS CAN LEAVE BETWEEN THE BOTTLE NECK AND THE BOTTLE CLAMP. The construction itself functions as a pressure relief valve.