| 摘要 |
<p>A coupling member comprising: a valve body, a sleeve which is displaceable in a longitudinal direction in relation to said valve body, a sealing element provided on said valve body, said sleeve having a sealing position in which it seals the valve body by means of said sealing element, the valve body is provided with a supporting device having a substantially radial surface, and the sleeve is provided with a corresponding radial surface and in the sealing position the sleeve rests on the radial surface of the supporting device by means of the corresponding radial surface of its own. A cylindrical inner wall of the sleeve extends past the sealing element, the cylindrical wall forming together with the valve body and the supporting device a substantially closed chamber for the sealing element. A gap faces away from the supporting device and communicates with a medium pressure inside the coupling member, the medium pressure actuating the sealing element and contributing to an effective mutual sealing of the valve body and the sleeve by means of the sealing element.</p> |
