Waterway 1" Eyeball Fitting [1-1/2" Insider, 2-3/8" FD, 1" Orifice] [Black] (400-1421E) insiders Professional installation is recommended whenever

Professional installation is recommended whenever electrical

Designed for compatible SpaBrite and Astrolite II style applications

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

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 Professional installation is recommended wheneverThe 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