When the toilet is flushed, water from the tank rapidly drops into the toilet bowl, which forces the waste water down the drain. As the drop in the tank's water level is sensed by the float, the tank refills with water until the float shuts off the supply.
There are two main parts to a toilet, the tank and the bowl. All of the parts must work together correctly to ensure the toilet works as it should.
Step 1: Flush the toilet
Before the toilet is flushed, both the tank and the bowl are full of water. When the toilet is flushed, the handle arm pulls a chain inside the tank that is attached to a flapper and flush valve. This allows the water to rush from the tank into the toilet bowl.
Step 2: Waste water leaves and fresh water refills the bowl
As the fresh water from the tank enters the toilet bowl, the pressure causes the bowl's waste water to be forced down the drain and out through the pipe. The bowl then fills up with fresh, clean water.
Step 3: The tank refills with water
Once the fresh water is in the toilet bowl, the flapper settles back down onto its hole. This allows the tank to fill back up with clean water. There is a float ball connected to the fill valve. Once the ball is raised to a certain level, the water flow into the tank is shut off.