Baltimore Aircoil (BAC) 280046 Float Ball is a durable water-level control component designed to maintain the proper water level in evaporative HVAC systems. It operates by floating on the water surface and automatically opening or closing the connected valve as the water level changes, ensuring consistent system performance. Commonly used in BAC cooling towers and evaporative condens... https://www.partshnc.com/280046-baltimore-aircoil-bac-float-ball