配用电动装置及蜗轮传动装置，可实现启闭操作，是调节流量的理想设备。
The valve is used with worm gear driving and electric device to form a complete set to realize open-close operation. It is the ideal equipment of adjusting flow.
配用电动装置及蜗轮传动装置，可实现启闭操作，是调节流量的理想设备。
The valve is used with worm gear driving and electric device to form a complete set to realize open-close operation. It is the ideal equipment of adjusting flow.
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