A flush valve is a plumbing device that controls the flow of water into and out of a toilet tank. When the toilet is flushed, the flush valve opens to allow water to flow into the bowl and then closes to stop the flow of water. Flush valves can be made of plastic or metal, and they come in a variety of shapes and sizes. The type of flush valve that is used in a particular toilet will depend on the make and model of the toilet.
Flush valves are an important part of a toilet’s plumbing system, and they can fail over time. If a flush valve fails, it can cause the toilet to leak or run continuously. In some cases, a failed flush valve can also cause the toilet to overflow. If you think that your toilet’s flush valve may be failing, it is important to have it inspected and repaired by a qualified plumber.