| 摘要 |
An actuator (1) for controlling a valve having a valve rod is provided. The actuator comprises a manual override arrangement for manually moving said actuator spindle (3), the manual override arrangement comprising a locking element (80), an actuator spindle holder (70) housing at least a portion of an actuator spindle. A guiding arrangement (92, 94) is adapted to guide the actuator spindle along the actuator spindle holder. In a normal operating mode the actuator spindle holder is locked to said locking element, and said actuator spindle is guidable along said actuator spindle holder via said guiding arrangement. In a manual override operating mode, said actuator spindle holder is unlocked from said locking element, and said actuator spindle holder is rotatable together with said actuator spindle via said guiding arrangement. |
