{"product_id":"cmp-whisperflo-1-hp-pump-impeller-073128","title":"SuperPro Replacement WhisperFlo 1 HP Pump Impeller 073128","description":"\u003cp\u003eSuperPro 25305-128-000 is a replacement impeller for the 1 HP WhisperFlo pump, sold as the aftermarket equivalent of impeller 073128.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMatch the horsepower\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eImpellers are specific to the horsepower of the pump. The vane shape and passage size are what set the flow curve, so an impeller from a different size WhisperFlo will not give the performance the pump was designed for, even where it physically threads on. Read the number off the old impeller, or off the pump label, before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe symptoms it fixes\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn impeller that is worn or partly blocked produces weak returns and a low pressure reading at the filter, which is the reverse of what a dirty filter does. Debris packed into the vanes gives the same result and is worth checking before ordering anything. A rattling wet end usually means the vanes are damaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePlan the whole job\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eReaching the impeller means opening the seal plate, and the mechanical shaft seal should not be reused once it is disturbed. Look at the diffuser while the pump is apart: it wears alongside the impeller, and replacing one without the other returns only part of the lost flow.\u003c\/p\u003e","brand":"CMP","offers":[{"title":"Default Title","offer_id":48634265469140,"sku":"SPG-101-1012","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/SPG-101-1012.png?v=1788827900","url":"https:\/\/www.activepoolsupply.com\/products\/cmp-whisperflo-1-hp-pump-impeller-073128","provider":"Active Pool Supply","version":"1.0","type":"link"}