The Nortec Humidity 2573516 Fill Valve Assembly is an OEM water control component designed for compatible Nortec commercial humidifiers with 90 to 005–020 lbs capacity. It works by regulating the flow of water into the humidifier cylinder or tank, ensuring the proper water level required for consistent steam generation and efficient humidity control. Engineered for dependable performa... https://www.partshnc.com/2573516-nortec-humidity-fill-valve-assy-90-005-020-lbs