RO System, Instruments manufacturer / supplier in China, offering Failsafe to Close PVC Electric Rotary Actuator Ball Valve 2 Way Motorized Control Water Industrial PVC Valve, DC12V DC24V AC220V Electric Ball Valve 2 Way UPVC PVC 25 50mm Water Plastic Motorized Ball Valve with Electric Actuator, Bsp NPT Electric PVC Ball Valve 2 Way Stainless Steel Electric Actuated UPVC Ball Valve and so on.