配置这种备选件的阀门在执行器顶部安装一个手轮用于手动阀门操作。
Valves with this option have a hand wheel mounted on top of the actuator for manual valve operation.
手动执行器轴是单导短梯形螺纹，带一件重型焊接夹子。
Manual actuator stems are single lead stub acme threads with one piece heavy duty clip welded on.
如果要订购旋转手动执行器，需要从下列选型表中选择适当的执行器代码并将其加在阀门基本型号上。
To order rotary manual actuators, add the appropriate code from the sizing table to the basic order code.
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