Ball Cock (Float Valve)

A plastic float valve works by using a buoyant plastic float to regulate the water level in a tank. When the water level drops, the float descends, opening a valve to allow water to enter the tank. As the water level rises, the float rises with it, eventually closing the valve to stop the flow of water once the desired level is reached. This mechanism ensures that the water level in the tank is maintained within a specified range.