Replacing a toilet flush valve is a simple plumbing repair that can save you money and time. The flush valve is the mechanism that controls the flow of water into the toilet bowl when you flush. If the flush valve is not working properly, it can cause the toilet to run continuously, which can waste water and increase your water bill.
There are two main types of flush valves: flapper valves and diaphragm valves. Flapper valves are the most common type of flush valve. They are made of rubber and seal against the flush valve seat to prevent water from flowing into the toilet bowl. Diaphragm valves are made of rubber or plastic and use a diaphragm to seal against the flush valve seat. Both types of flush valves can wear out over time and need to be replaced.