{"product_id":"1-1-2-bump-shaft-ec50ac-ec40ac","title":"Hayward 1-1\/2\" Bump Shaft (EC50AC; EC40AC)","description":"\u003cp\u003eThe Hayward ECX5000F is the 1-1\/2 inch bump shaft used in Perflex D.E. filters. It is the genuine Hayward part, made in metal like the original.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow a Perflex cleans itself\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePerflex filters do not get backwashed the way a sand filter does. They get bumped. The handle on top of the tank drives this shaft, the shaft moves the flex tube assembly inside, and the shock knocks the spent D.E. coating off the tubes so it can settle and a fresh coat can be applied. Everything in that chain runs through the bump shaft.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe symptom\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWhen the shaft bends, breaks or comes loose, the handle either moves with no resistance at all or moves without doing anything to the pressure. Owners often assume the tubes are blinded and start replacing them, when the shaft is what has actually failed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck the model before ordering\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe sources here do not agree on the full fit list. The listing names the EC50AC and the EC40AC; the parts breakdown this shaft appears in covers the EC50, EC50C, EC50A and EC50AC. Match your filter model number and measure the old shaft rather than going by memory.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48634292863188,"sku":"HAY-051-1506","price":71.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_0138d096-55e4-47bd-8a69-b7050f883880.png?v=1788828282","url":"https:\/\/www.activepoolsupply.com\/products\/1-1-2-bump-shaft-ec50ac-ec40ac","provider":"Active Pool Supply","version":"1.0","type":"link"}