Moreover, positioning air cylinder is an optional part, easier and more accurate fof positioning.
2
使用空气缸定位，无噪音，易于保养。
Adopting air-controlled positioning, noiseless and easy for maintenance.
3
执行机构采用气动薄膜或气缸执行机构的，随阀提供配套隔爆型电？气阀门定位器。
For the actuators with pneumatic diaphragms or air cylinders the matching flame-proof type electric-gas valve positioner shall be provided together with the valve.
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