Female urinal
Female urinal fixture
Filtering apparatus of circulating flush toilet
Filtering elements
Flapper flush valve assembly
Flapper valve and valve seat sizing element
Flapper valve mounting adapter
Flapper valve with dual action arm
Flapper-type flush valve and mounting adapter
Float valve assembly
Float valve assembly with flow control and volume balancing mean
Float-controlled dual flush valve
Flood level sensor for fluid filling systems
Flood preventer for fluid filling systems
Floor level waste pumping system for toilets
Floor protection and cleaning in male toilets
Flow augmented toilet flushing unit
Flow restrictor for water closet refill tube
Flow-restricting toilet bowl refill tube discharge
Fluid jetting device