The Ice-O-Matic ICE9131111-01 Ice Machine Float Valve controls the water level inside the reservoir by opening and closing the water supply as the float rises and falls during the ice-making cycle. This automatic regulation maintains the required water level for continuous ice production while preventing overflow or insufficient water fill. The float valve is installed within the machine's water reservoir and operates as part of the water inlet system. It is commonly used in commercial ice machines requiring consistent water level management.