Waterway 1" Eyeball Fitting [1-1/2" Insider, 2-3/8" FD, 1" Orifice] [Black] (400-1421E) insiders the filter can feel less

the filter can feel less effective and less confidence-inspiring than it should

Helps restore cleaner and more dependable ignition performance

It is a practical service part when reliable heat restoration depends on keeping the heater aligned with the system’s dual sensor design

Improves hardware protection and tool-fit confidence

Helps restore central coordination of heater and pump functions

Waterway 1" Eyeball Fitting [1-1/2" Insider, 2-3/8" FD, 1" Orifice] [Black] (400-1421E) insiders the filter can feel lessThe Waterway 400 1421E 1 inch eyeball fitting is designed for compatible return and inlet applications using a 1 1 2 inch insider fit, a 2 3 8 inch face diameter, and a 1 inch orifice. Eyeball fittings are useful because they help direct returning water flow, which can influence circulation patterns and overall system performance. The black finish gives this fitting a strong visual profile that can blend especially well with darker pool or spa