Waterway 1" Eyeball Fitting [1-1/2" Insider, 2-3/8" FD, 1" Orifice] [Black] (400-1421E) watertestkits Small connector parts like this

Small connector parts like this may not draw attention

Improves repair confidence and pump-side performance

A properly selected replacement helps preserve the intended internal action of the valve instead of forcing the repair to rely on a spring that only partly fits the application

The 004674F is a practical service part when a compatible Raypak heater needs a tube bundle to restore dependable heat-transfer performance

directional flow control can become less reliable than it should be

Waterway 1" Eyeball Fitting [1-1/2" Insider, 2-3/8" FD, 1" Orifice] [Black] (400-1421E) watertestkits Small connector parts like thisThe 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