The seat disk predates the Korky flapper, so your toilet must be really old if it has a flush valve that uses one. It’s a flat rubber disk that fits over the valve opening, held in place by water ...

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The float, the flapper, or the fill valve are the most likely causes of a toilet running continuously. You can perform easy tests like monitoring water movement to help identify the cause. Whichever ...

Consumer Reports has no financial relationship with advertisers on this site. From space age–looking models to new technologies that greatly improve water efficiency, the latest toilets on display at ...