Zodiac Jandy JXi 200–400 Transformer Kit (R0456301) bathpumps A nut like this is

A nut like this is useful because it helps hold the cover in place

the filter can lose the dependable support it should provide

The Hayward true union PVC ball valve is designed for compatible plumbing applications where shutoff control and easier service access are needed

When that surface is worn

Zodiac Jandy JXi 200–400 Transformer Kit (R0456301) bathpumps A nut like this isIdeal for careful pool equipment rebuilds, Zodiac Jandy JXi 200400 Transformer Kit (R0456301) is a replacement electrical: transformers component for Jandy JXi heater applications. It is used for supplying stepped down control voltage, and it keeps low voltage controls, relays, and safety circuits powered correctly. For JXi heaters, matching the exact service kit matters because combustion, water flow, and control components are tightly integrated