Engine: Expired / General Subjects

1. A A vacuum is created in chamber "III" as water flows from the toilet, drawing "C" into the closed position.
2. B Once "C" has lifted, "A" will reseat with water passing through "H", pressure gradually builds in chamber "I", developing sufficient force to reseat "C".
3. C A vacuum is created in chamber "III" as a result of the high flow rate of water passing through this chamber, drawing "C" down on its seat.
4. D Releasing "E" physically draws "C" down on its seat.

Tip: press A-D to answer