| 摘要 |
<p>The combined bottle seal and tap has a pipe through the stopper to pressurise the contents using air or gas, also a standpipe extending from the bottle bottom up through the stopper to an outlet spout. The source of the pressure is a hand-operated pumping ball (8) on a lever (9) hinging on the stopper housing, this lever also being usable to shut off the outlet through the standpipe. The pressure outlet (11) inside the bottle (1) has a non-return valve (13). There can be an elastic intermediate piece (16) between standpipe (14) and spout (7), squeezed shut by the lever tip (15).</p> |
