Aprilaire 4640 Scale Control Insert 323613-751 It is intended for non-potable

It is intended for non-potable heating and storage applications

How do I adjust the flow rate sensitivity

streamlining installation in tight plenum spaces

While the kit provides the stub tube and nut for the mechanical connection

For contractors managing low-flow hydronic or process systems

Aprilaire 4640 Scale Control Insert 323613-751 It is intended for non-potableMaintaining your whole home humidification system requires precision engineered components like the Aprilaire 4640 Scale Control Insert. This genuine Aprilaire replacement part is specifically designed to encase the humidifier water panel, serving as a structural U shaped insert that guides water flow and manages mineral accumulation. Constructed from durable, heat resistant polypropylene, the 4640 insert effectively captures heavy scale buildup and