| 摘要 |
Shut-off valve comprising a valve housing with a valve seat and an inflow bore, a valve element loaded by a spring, and a rotating element acting on the valve element, in which the rotating element actuating the valve element is provided with a valve cup open towards the valve element and the valve element is guided in a sleeve which is, for its part, guided in the valve cup and loaded axially towards the valve element by a spring, the valve element being connected to the sleeve on the one hand and the sleeve to the valve cup and the housing on the other hand by means of a respective ball catch of which the balls, of which there are preferably two to four, of the catch acting between the valve element and the sleeve are held in holes in the sleeve and can be engaged in and disengaged from a thread groove of the valve element, while the balls, of which there are preferably three, of the catch acting between the sleeve, the valve cup and the housing are guided in a curved circumferential slot in the valve cup and engage on the one hand in a spherically cupped recess in the sleeve and, on the other hand, in an axial toothing of the housing which opens into a circumferential groove.
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