| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an actuator for a valve which commonly uses an opening display indicator while making it cope with a turn at 90° to the valve, and can be attached to an actuator shaft while performing a whirl-stop by a simple attachment structure.SOLUTION: An actuator for a valve is for use in a rotating valve, and has an actuator shaft 3 having an accessory attachment linear groove 11 at an upper face, and an opening display indicator 5. An attachment hole 8 to the actuator shaft 3 and a protrusion 16 protruded inwardly of the attachment hole 8 are formed in the vicinity of a center of the indicator 5, an opening display part 20 which copes with a turn at 90° is arranged at front and rear surface sides, either of surfaces of the opening display part 20 is set as an upper face, an end of the linear groove 11 is engaged with the protrusion 16, and the indicator 5 is attached to the actuator shaft 3 in a whirl-stopped state.</p> |
