{"product_id":"whisperflo-xf-5hp-impeller","title":"Pentair WhisperFlo XF 5 HP Impeller","description":"\u003cp\u003eThe Pentair 400023Z is the 5 HP impeller assembly for WhisperFloXF and Max-E-ProXF pumps. It fits the XFET-20, XFE-20, XFJ-20 and XFK-20 models in both families.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the impeller does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is the rotating disc inside the pump that takes energy from the motor and puts it into the water. Everything downstream, the flow to the filter, the pressure at the returns, the suction that runs a cleaner, comes from this one part turning cleanly inside the volute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMatching the horsepower\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eImpellers are sized to the motor. This one is the 5 HP part. Fitting a different size changes the flow curve the pump was designed around, so match the horsepower to what is on your motor plate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSigns it needs replacing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWeak return flow when the filter is clean and the pump is fully primed is the classic symptom. Open the wet end and you typically find vanes packed with debris, worn thin, or broken away. Because the pump has to come apart to reach the impeller, it is worth having the shaft seal and the seal plate o-ring on hand for the same job.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625747820756,"sku":"PUR-101-4000","price":138.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_9827669c-9480-4149-8177-d546b0d03191.jpg?v=1788691457","url":"https:\/\/www.activepoolsupply.com\/products\/whisperflo-xf-5hp-impeller","provider":"Active Pool Supply","version":"1.0","type":"link"}