Watts IntelliFlow Washing Machine Water Shut-off Valves automatically regulate hot and cold flow to washing machines. The valves sense increases in electrical current draw when a washing machine operates. This signals the valves to open in order to allow water to flow to the washing machine. The valves close when current draws fall back to normal levels. The valves are equipped with 1/2” inlet connections and standard, 120-volt power cords. No hardwiring is required, and the washing machine’s power cord connects directly to an outlet on the valve assembly. SupplyHouse.com offers a recessed, wall-mount version of the valve which includes a drain connection. The leak sensor that comes with this model signals the valves to close in the event of a leak, providing additional peace of mind.