0.75 Acquaflex ball cock

is a mechanism used in toilet tanks to control the flow of water. It consists of a hollow plastic or metal ball on an armature, which is attached to a lever. When the toilet is flushed and the water level drops, the ballcock’s float descends with the water level. This action opens a valve, allowing water to refill the tank until the float reaches the predetermined level, at which point the valve closes again, stopping the flow of water. This mechanism helps maintain a consistent water level in the toilet tank, ensuring proper flushing and preventing overflow.