A valve assembly for charging/recharging containers and the like, from a bottom surface thereof is provided. The valve assembly includes a dispenser manifold including a nipple extending from an upper surface thereof and defining a lumen through the nipple; a fitting extending from a bottom surface of the dispenser manifold, the fitting defining an opening therethrough which is in fluid communication with the lumen of the nipple; and a plunger reciprocally disposed within the lumen of the nipple and within the opening of the fitting, wherein the plunger has a first position in which the lumen of the nipple is occluded and a second position in which the lumen of the nipple is not occluded.