It stands for Automatic Changeover

L) for rapid field deployment

For maximum germicidal efficacy

7/8" shaft diameter

Lochinvar & A.O. Smith 100109784 Tube 326058-758 It stands for Automatic ChangeoverThe Lochinvar & A. O. Smith 100109784 is a professional grade diffuser dip tube designed for high recovery commercial and residential water heating systems. Engineered with a durable polypropylene (PP) construction, this component facilitates the precise delivery of cold inlet water to the bottom of the tank, preventing thermal stratification and ensuring maximum burner efficiency. Measuring 31. 44 inches in length with a standard 1 NPT connection,