A valve assembly is disclosed comprising an elongate body comprising a lumen and an output aperture near a distal portion thereof, a plunger positioned in the lumen and movable to a first position and a second position, and a toner path formed at least partially within the lumen and extending from a toner input to a toner path end located proximate the output aperture. When the plunger is in the first position, the output aperture is not fluidly coupled to the toner path. When the plunger is in the second position, the outlet aperture is fluidly coupled to the toner path such that a toner in the toner path can exit the valve assembly.