Patent ID: 8459506

Claim:
A dispensing assembly for dispensing at least one fluid, the dispensing assembly comprising: a source of a first fluid; a valve having opened and closed positions in which the valve permits and inhibits flow of the first fluid, respectively; a source of a second fluid; a first chamber in fluid communication with the source of the first fluid via the first valve, and in fluid communication with the source of the second fluid; a dispenser outlet through which the first and second fluids are dispensed from the dispenser assembly, the dispenser outlet having opened and closed states in which flow of the first and second fluids from the dispenser outlet is permitted and inhibited, respectively; and a second chamber in fluid communication with the first chamber; the first valve movable from the opened position to the closed position responsive to a change in fluid pressure within the second chamber, and movable from the closed position to the opened position responsive to an opposite change in fluid pressure within the second chamber.