Pentair Sta-Rite S7D75/S8D110/DES/DEP Center Rod (23900-0039Z) precision Useful when the original valve

Useful when the original valve is leaking or sticking

Lighting parts should be matched carefully to the existing fixture to help maintain fit

and this Little Giant APCP-1700 version is rated at 1700 gallons per hour using the 577301 reference

When a control valve starts to lose precision

Pentair Sta-Rite S7D75/S8D110/DES/DEP Center Rod (23900-0039Z) precision Useful when the original valveThis center rod is used inside compatible Sta Rite S7D75, S8D110, DES, and DEP filter assemblies to help secure and align internal filter components. A bent, corroded, or damaged rod can make it difficult to tighten the assembly evenly and may compromise how the grids or internal parts seat inside the tank. Replacing it helps support even clamping pressure and reliable filter operation. Supports proper internal filter alignment Helps secure DE filter