美妙人妇系列1～100,亚洲国产AV一区二区三区四区,亚洲国产精品色情777777,亚洲中文久久精品无码1

J145X diaphragm type electric remote control valve is installed in various water supply system pipeline, according to the electrical signal or manual operation, the valve opens or closes.Accurate and fast control response.The closing speed is adjustable and the valve closes smoothly without pressure fluctuation.Three-way solenoid valve is adopted for easy maintenance.