| 摘要 |
<p>A water tap (10) for use in regulating the flow of water delivered under pressure. The tap includes a valve seat, a receiving compartment (18) between an inlet (12) and an outlet (14) of the tap, the receiving compartment housing a sealing member (32), the sealing member having a density less than water, and an activating rod (36), whereby the tap is operable between a closed position in which the water pressure urges the sealing member into engagement with the valve seat, thus preventing the flow of water through the tap, and an open position in which the activating rod urges the sealing member away from the valve seat, thus allowing flow of water through the tap. The activating rod is arranged to act through a centroid of the sealing member and to urge the sealing member into a position substantially centrally of the resulting water flow. The receiving compartment and sealing member are so arranged that the water flow through the receiving compartment maintains the sealing member substantially centrally whilst the tap is open.</p> |
