Dispenser for dispensing a first fluid actuated by a pressurized second fluid

摘要

A volumetrically variable soap chamber (52) partially collapses in response to an initial increased pressure state imposed by initiation of water flow through a second chamber (50) and a predetermined quantity of liquid soap will be dispensed. The soap chamber (52) is replenished from a source of liquid soap (30) in response to a reduced pressure state in the soap chamber imposed by the cessation of water flow. Both chambers (50) and (52) are in particular segregated by a diaphragm (54).