System in our pressure assisted toilets which compresses entrapped air upon entering the tank. When the toilet is flushed, the air releases like a tightly wound spring, surging the water into the bowl at high velocity. The crest of this torrent empties bowl contents in less than 4 seconds, and pushes them throught the drainline.
The valve located at the bottom of a gravity-operated toilet flush tank, which opens when the trip lever is actuated, and closes when the tank has drained to the desired level. Usually contains an overflow tube as well.
Any of a variety of valve or flush systems for toilets or urinals. May refer to hydraulic, sensor-operated, diaphragm, or piston systems.