Toilet cistern for adjustable amounts of flushing water - contains outlet valve and lever only to control flush volume

摘要

The outlet valve (2) within the toilet cistern (1) is positioned, so that it remains open as long as it is raised by the valve lever (3). When the valve lever is released, the valve falls back onto its seat (5), and closes the outlet aperture (6). The user of the toilet can easily and reliably determine the quantity of water in the flush. In no case is a full volume flush needed, so a two thirds saving of water can be effected without difficulty.