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This helps seat it evenly
Filters produced after that date use a different union design and are not compatible with this set
Many compatible Maax and Elite Spa models use a dual-filter system requiring two (2) cartridges for a complete service
IMPORTANT: IMPELLER SCREW REQUIRED — SOLD SEPARATELY
Pentair Impeller | Max-E-ProXF & WhisperFlo XF | 400020Z Sanitizer System Parts This helps seat it evenlyThe Pentair 400020Z is the OEM replacement impeller for the Max E ProXF and WhisperFlo XF series inground pumps, covering the 8 HP and 30 HP model variants across all major configurations in these lines. The impeller is the rotating component inside the pump volute that transfers kinetic energy from the motor shaft to the water, generating the flow and pressure your system requires. A damaged, worn, or cracked impeller results in reduced flow, loss of
