Pentair Compool 4-Position Terminal Block (8023304Z) ametek A volute like this is

A volute like this is useful because it restores the main pump housing section that directs water around the impeller and out through the discharge path

The two-piece kit is useful when replacing worn

and PA75SV references

Useful when the original rear section is damaged or compromised

Pentair Compool 4-Position Terminal Block (8023304Z) ametek A volute like this isThe band clamp assembly secures major sections of the Challenger pump housing so the wet end can seal properly. This replacement assembly is used when the original clamp is corroded, bent, stripped, or no longer tightening evenly. A sound clamp helps protect against leaks and makes pump maintenance more dependable after internal service. Choose this replacement when you want a clean, part specific repair rather than forcing a workaround that can