Pentair High Head Impeller 7-1/2 HP | C Series High Performance Commercial Pump | 073829

The Pentair High Head Impeller (073829) is the OEM replacement impeller for the C Series High Performance Commercial Pump, specifically engineered for 7.5 HP single-phase and three-phase configurations operating in high head applications.

What It Does

The impeller is the rotating component at the heart of the pump's hydraulic assembly, converting motor shaft energy into the flow and pressure that drives water through the system. A high head impeller is designed to generate elevated discharge pressure — critical in commercial installations where water must be pushed through long pipe runs, multiple filtration stages, or significant elevation changes. When an impeller wears, cracks, or loses vane integrity, flow rate drops and system pressure falls. Replacing with the correct OEM impeller restores designed hydraulic performance. Match the part number stamped or molded on your existing impeller before ordering.

Specifications

Fits Into

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

The CH-75, CHK-75, and CHKL-75 are distinct model variants within the C Series — the K and KL suffixes denote specific mechanical seal and coupling configurations. Before ordering, confirm your exact model number from the pump nameplate, not just the horsepower rating. The impeller part number (073829) is shared across all three variants for the 7.5 HP high head configuration, but the diffuser, seal, and housing components differ between models. If you are servicing the pump at the same time, inspect the mechanical seal and wear ring for scoring or grooves — replacing those components together with the impeller reduces the likelihood of a repeat service call.