Pentair Diffuser | Challenger High Pressure Pump | 355270Z C7447 Safety first — always release

Safety first — always release pressure before opening

maintaining a sealed chamber that allows the pump to prime and sustain suction during operation

For Cartridge Filters: Adjust spray nozzle to stream

2" FIP Drain

addressing those components during the same service visit avoids reopening the enclosure unnecessarily

Pentair Diffuser | Challenger High Pressure Pump | 355270Z C7447 Safety first — always releaseThe Pentair Diffuser (355270Z) is the OEM replacement diffuser for the Challenger High Pressure inground pump, sized for the 11 2 HP Full Rated and 2 HP Up Rated configurations. The diffuser sits between the impeller and the volute, converting the high velocity water leaving the impeller into pressure. A cracked, worn, or incorrectly sized diffuser reduces hydraulic efficiency, disrupts flow through the pump, and can accelerate wear on the impeller.