Ballcock: Water supply valve.
Float ball: The ball that rides on the surface of the water in the tank. When the tank is full, the float ball shuts off the ballcock.
Flush valve: Connection that consists of the flapper and the flush valve seat.
Flush valve seat: Brass or plastic sealant ring located at the bottom of the tank.
Lift arm: Thin metal rod inside the tank that connects to the flush handle and raises the flapper valve.
Main drain: The slanting pipe in the basement or crawl space that carries wastes to a sewer or septic tank; also called building drain.
Main water valve: Located on the wall near the floor, this is a knob you twist to turn the water supply on and off.
Overflow pipe: Long, hollow tube, fastened to the bottom of the tank.
Flapper (also called stopper, tank-ball, seal or disk): Rubbery plug attached to the lift chain.
Tank: Large, oblong ceramic container located behind the toilet bowl.
Trap: Where waste water goes as it leaves the toilet bowl.
