Caleffi 553642A AutoFill Boiler Feed Valve W/Pressure Gauge 1/2" NPT Inlet

The Caleffi 553642A Boiler Feed Auto Filling Valve is a high quality part that is well suited for hydronic heating systems. It has a 1/2” NPT inlet connection and automatically controls water supply to refill the system as desired, to maintain pressure and avoid air lock. Designed for use with HVAC equipment such as boilers and radiant heating it improves system efficiency by eliminating pressure drop and decreasing required maintenance. Its rigid framework and accuracy regulation enhance power conservation and system durability, which makes it an essential part of comfortable and complication-free functionality in residential and commercial heating systems.