| 摘要 |
<p>A method and device for controlling the flow of liquid from drinking containers, wherein a membrane (12) is movably connected to a valve (50) to form a valve, controlled by negative pressure, for liquid from a drinking container, the force resulting from the pressure difference (P1 - P2) across the membrane (12), opening the valve (50), even by positive pressure (P3) within the drinking container, caused by a carbonated refreshing drink, for example.</p> |
