Cleansing fluid dose distributor for toilet supply pipe - has flow induced suction while vented to atmospheric pressure for feed through non-return valves

摘要

Two coaxial vertical tubes are fixed together, the inner one (5) being an extension of the water supply pipe (2), the outer one (6) extending to the toilet (3) and being vented at the top (6a). Horizontal and vertical pipes (11,12) dip into the cleansing fluid reservoir (13) and are connected to the inner water pipe at (7) via a double cone joint (9). Water flowing downwards in the inner pipe (5) causes a suction during a flush of the toilet which lifts the non return valves (14,15), inducing a flow of cleansing fluid. The amount of flow is finely regulated by an air vent (17) which can be progressively closed.