| 摘要 |
The present invention relates to a drive (1) for valves with a shut-off and control function or double locking function with a first drive device (3) with a first fluid drive (7) and a second drive device (5) with a second fluid drive (17). The first and the second fluid drive (7, 17) are arranged behind one another in the axial direction and coaxially with respect to one another. A first drive spindle (9), connected to the first fluid drive (7), of the first drive device (3) is arranged coaxially with respect to a second drive spindle (19), connected to the second fluid drive (17), of the second drive device (15). The first drive spindle (9) extends through the second fluid drive (17). |
