Actuating device on the drain valve of a flush tank
Add-on dual flush toilet water saver
Adjustable tank ball assembly for a two-step flushing control ty
Adjustable water-level flushing apparatus
Advanced dual-flush valve
Apparatus for flushing toilets
Apparatus for regulating the quantity of liquid for the flushing
Apparatus for selectively flushing a toilet with either a full o
Automatic flushing device with magnetic valve