| 摘要 |
<p>The valve comprises a fixed part (1, 2), a moving part (9) and a sealing joint (15). The sealing joint (15) is comprised of two portions (16, 17) which are axially separated by a cylindrical part (18). During the filling operation, the connector (30) of the filler tank displaces the moving part (9) downwardly against the action of a spring (10). A protuberance (31) cooperates with the portion (16) of the seal to move downwardly the latter. A ramp (32) guides the portion (17) of the seal towards the connector (30). At the stroke end, said portion (17) is clamped between the fixed part (1, 2) and the connector (30) to provide for a complete tightness of the filling passage (25) to the outside and a perfect separation of both filling (25) and discharge (21) passages. In a closed position of the valve, the upper portion of the part (9) engages the opening provided for the passage of the connector (30).</p> |
