An overflow tube is a vertical tube located inside a toilet tank that prevents water from overflowing if the fill valve malfunctions or fails to shut off. It directs excess water from the tank into the bowl, preventing it from spilling onto the floor. The overflow tube is an essential safety component in toilet tanks, ensuring that water is properly diverted to avoid flooding and damage. It is typically made of plastic or brass and is connected to the flush valve assembly. Regular inspection of the overflow tube helps maintain toilet functionality and prevent potential water damage due to overfilling.
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