| 摘要 |
A main-control valve (21) has a main-valve slider (26) which can be moved with a primary-motion apparatus which has pressure chambers. Pressure medium waiting by the inlet port (22) of housing (25) can be made to act on the pressure chambers through flow paths arranged in the main-valve slider. At least one flow path is controlled by a servo-valve slider which can be slid into the main-valve slider. A servo movement apparatus is allocated to the servo-valve slider and can operate using a pilot control valve (43). The servo movement apparatus has opposing pressure chambers which work with the servo-valve slider. |
