The toilet flushing cycle is determined based on an exact series of events. First, pour enough water into the bowl for the siphon to work. This is hard work. The purpose of the tank is to hold about 2 gallons and release them all at once. When the flushing is complete, the flap returns to its original position. It blocks the drain hole. The container is currently empty and waiting.
This is where the replenishment mechanism comes into play. Its only function is to fill the water tank so it can flush again. Adjust the flow rate with a simple valve. When the water level in the tank drops, the filling float drops. This is where gravity comes into play. The float is connected to the filling valve, also known as the filling valve. When the float falls, the valve opens forcefully.
Water flows in, but not in one direction. The refill mechanism splits the flow. Most of the water heads straight down the tank directly through the water pipe. The rest gets diverted. It falls through the bowl fill pipe into the overflow pipe. This will slowly refill the bowl. It restores the water seal in the trapway.
When the tank is full, the float rises. Monitor the water level. Eventually it will reach the height you set. The valve is closed. The water has stopped.
Think about what would happen if the float comes off. Or the valve is stuck open. Uncontrolled flow occurs. The water tank is overflowing. Water splashes on the bathroom floor. It’s a mess.
However, the design is fault-tolerant. overflow pipe. It is located in the middle of the tank. Higher than normal fill line. If the valve fails and the water continues to rise, it will reach the top of the pipe. Pour excess water directly into the bowl instead of spilling over the sides of the container. The toilet may run forever, but the floor will remain dry. This is a smart but ugly solution. It works because it has to.
