| 摘要 |
A valve slide includes a slide housing and defines a slide passage opening. The slide passage opening is closable by a closing member which is slidable in the plane of the slide. A sealing surface surrounds the slide passage opening. In the closed position of the closing member, a circumferentially closed sealing member rests against the sealing surface. Imaginary straight generatrices of the sealing surface extend at a right angle to the plane in which the axis of the slide and the sliding direction of the closing member are located. In the direction of the generatrices of the sealing surfaces, the sealing surface has an upper portion, a middle portion and a lower portion. The upper portion and the lower portion each include an obtuse angle with the middle portion. The planes of the upper portion and the lower extend approximately perpendicularly to the sliding direction of the closing member. At least the components of the sealing member which interact with the middle portion of the sealing surface extend along straight lines and parallel to that plane which includes the axis of the slide and the direction of sliding of the closing member.
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