1.motorized valve 2.CE&OEM 3.Stainless Base with Aluminum Shell 4.Forging Brass Body Synchromotor ... sends the controlling signal to the motorized valve, the valve is opened with water flowing from B to A, and ... when the signal disappears, the valve, with the help of its own spring, returns back to ... to B, and when the signal disappears, the valve, with the help of its own spring, returns back ...