Hayward PS-16 Expansion PCB (GLX-PCB-EXP) littlegiant A union like this is

A union like this is useful because it gives the system a removable plumbing joint that can simplify maintenance

3 by 7 Santoprene feed tube for compatible Hayward chemical feeder applications

premium accent to the seat

The Hayward 1

replacing a worn sensor can help protect the equipment while keeping water care more consistent

Hayward PS-16 Expansion PCB (GLX-PCB-EXP) littlegiant A union like this isExpanding a Hayward PS 16 automation system requires the right board to add control capacity cleanly. This expansion PCB is designed for compatible Hayward control applications where additional equipment, features, or circuit management is needed. For pool and spa systems that have grown beyond the original control layout, an expansion board can help organize new functionality while keeping everything tied into the automation platform. It is a