How a toilet flushes

No pump, no motor. Gravity and a siphon do the work. Press Flush and follow the steps.

1. The handle lifts the flapper.
2. Tank water rushes through the rim into the bowl.
3. The bowl rises over the weir and spills into the trapway.
4. The trapway fills up. A siphon starts.
5. The siphon sucks the bowl empty.
6. Air reaches the trap. Gurgle! The siphon breaks.
7. The fill valve refills the tank. A side tube refills the bowl.

Blue = dirty water. Pale = clean water. The dye shows how much old water each flush replaces.