| 摘要 |
<p>A jumper valve (17, 33) for a faucet (10) has a valve stem (23, 24) and a valve disc (24, 35). A valve washer (27, 35) is fitted to, or formed integrally with, the valve disc (24, 35) and has an annular face (30, 36) to engage a valve seat (22), surrounding a substantially frusto-conical or hemi-spherical portion (28, 37) which engages the wall of the bore (21) through the valve seat assembly (16) of the faucet (10). The junction (31, 38) of the annular face (30, 36) and the frusto-conical or hemi-spherical portion (28, 37) engages the junction (32) of the annular seat (22) and bore (21) of the valve seat assembly (16). The jumper valve (17, 33) provides at least two zones of sealing contact between the jumper valve (17, 33) and the valve seat assembly (16) to prevent the faucet (10) from leaking or dripping.</p> |
