Abstract: An attachment for closing all varieties of flush valves before the normal amount of water has exited the tank includes a buoyant float that falls with the water level of the tank during a flush and applies its weight against the flush valve to push the valve prematurely into its seat. A float guide rod attaches to the tank wall and provides a path for the float to move upon, and a valve actuator rod is adjustably connected to the float and directly contacts the flush valve. A variety of attachments to the flush valves or actuator rod are provided for reliable performance. A combination of an entire flush valve assembly with a valve closer incorporated in its structure includes a float guide rod attached to the standpipe of the valve assembly rather than to the tank wall.

Abstract: An attachment for interrupting the flushing action of a toilet before the entire volume of water in the toilet tank has exited includes a buoyant member that is connected to the water outlet plug of the toilet tank and acts to close the plug when some but not all of the water in the tank has exited. The buoyant member is connected to the plug and closes the plug by applying its weight to the plug when the member is no longer supported by the water. An adapter allows the buoyant member to act on flapper valves as well as on conventional tank plugs.