| 摘要 |
<p>PCT No. PCT/EP87/00476 Sec. 371 Date Feb. 13, 1989 Sec. 102(e) Date Feb. 13, 1989 PCT Filed Aug. 24, 1987 PCT Pub. No. WO88/01704 PCT Pub. Date Mar. 10, 1988.The invention relates to a shut-off valve comprising a valve housing (12), a valve piston with valve cone (22) arranged up-stream of an associated valve seat (20), and a piston holder (16) axially movable within the valve housing (14) by means of a spindle (58) and accommodating said valve piston. To prevent overtightening of the valve piston, the piston holder (16) is connected to the valve housing (14) in the manner of a slip clutch. In addition, the outlet port (146) of the shut-off valve can be closed by a non-return valve.</p> |
