Robertshaw S-53 Series IMV-0400Robertshaw IMV 0400 The Robertshaw S 53 Water Valve Series is a single solenoid valve for dishwashing machines and commercial icemakers. The S 53 features the design combination of a brass inlet fitting or quick connect fitting and a mounting bracket, which allows direct connection to the supply plumbing without applying torque to the valve body. Features and Benefits: Pilot operated diaphragm provides high flow capacity with minimum power