Valves with this option have a hand wheel mounted on top of the actuator for manual valve operation.
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。
Valve shall be installed in accordance with manufacturer's written Installation and Operation Manual and approved submittals.
应该按照制造商书面安装和操作手册和经过认可的资料来安装阀门。
In addition, the invention further provides a detection method capable of detecting error reason of the pilot valve when the manual operation device for electric pilot valve breaks down.
另外，本发明还提供一种检测方法，该方法在具有上述手动操作装置的电动导向阀发生故障时，能检查导向阀的故障原因。
Worm transmission, convenient to switch from manual to pneumatic mode, it is installed between operation organ and valve.
蜗杆传动，手动气动切换方便。安装地执行装置与阀门之间。
Worm transmission, convenient to switch from manual to pneumatic mode, it is installed between operation organ and valve.
蜗杆传动，手动气动切换方便。安装地执行装置与阀门之间。
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