Ultrasonic Water Meter, Heat Meter, Gas Meter manufacturer / supplier in China, offering High Sensitivity Battery Powered Water Leak Alarm Motorized Brass Ball Valve with Manual Operation, Motorized 2-Way Stainless Steel Ball Valve AC/DC 9-24V Electric Actuated Auto Return Flow Control Manual Override Ball Valve, Electric Actuator Water Valve Ball with DN15 DN20 DN25 DN32 DN40 DN50 3way 2way Automatic Water Valve Flow Control and so on.