... install it yourself. with automatic, manual clutch conversion. Ball valve for automatic control of gas pipelines, electric and manual ... clutch conversion, mechanical hand power outage, maintenance manual switch valve, double safety. compact structure, beautiful appearance4. for the ... 4.5W-10WTorque10-30-40kg. CmAuto-off valve time3-8 secondsElectric valve open time3-8 secondsInsulation Resistance> 20MΩ ...