| 摘要 |
Quick-action change-over valve for machine-tool feed cylinders, with four valve seats and valve bodies which are each actuated by a valve-actuating tappet part 34. These are connected to two coupling pieces 31 and 32 and are actuated in pairs by respective coupling pieces carrying a pin 30 which engages into a slotted track 26 and 27 of a cylinder slotted piece 23. When the latter is rotated by a rotary drive motor, the four valves are actuated. <IMAGE>
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