Caleffi 573002A Backflow Preventer Automatic Filling Valve 1/2" NPT × 1/2" NPT W/BFP/AutoFill

The Caleffi 573002A is a 1/2-inch NPT automatic filling valve designed for use in hydronic heating systems, particularly in boilers and radiant heating systems. This valve is essential for ensuring that the system is kept at the right water level since it automatically adds water as needed and stops the system from overfilling. It is powered by a float mechanism that senses the system's water level.Ideal system operation is ensured when the water level drops below a predefined level and the valve opens to let water in.The Caleffi 573002A offers a number of advantages, such as effortless installation, dependable operation, and enhanced efficiency through the maintenance of the proper water level, which guards against system component damage and guarantees steady heating output.