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Inside a standard toilet tank, there are three important parts: the flapper, the fill valve and the flush valve. The flapper is the rubber piece attached to the flush lever chain. It lifts up and down ...

Q:I'd like to understand just how water comes into the toilet tank. I have two toilets that overflow, and I cannot figure out how to stop it. I've tried to lift the ball on one; the other is on a ...

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 ...