| 摘要 |
The valve has a seat (5) connected in an annular groove (6) on an inner side of a body or an edge of a throttle valve. The seat has sealing lips (8) symmetrical to each other. Each sealing lip has a tapering free edge brought towards the interior of the groove while being in contact with the lateral side of the groove and is directed in the direction opposite to that going towards the base of the groove. |
