Abstract: A nozzle apparatus for infusing a liquid from a liquid reservoir into a vessel or bottle located lower than the reservoir. The nozzle apparatus comprising an outer cylindrical wall member having the interior communicated with the reservoir and filled with a liquid to be infused, an inner cylindrical wall member coaxially arranged in the interior of the outer cylindrical wall member for axial movement therein, a valve member adapted to close communication between the interiors of the outer and the inner cylindrical wall members, and an air-relief conduit member supported on the outer wall member and extending through the outer and the inner wall members and the valve member to terminate as a distal end which is adapted to be inserted in a vessel to be infused with a liquid. When the vessel is elevated by suitable means toward the nozzle apparatus, the vessel pushes the inner wall member upwards to a position allowing the valve to open for infusion of a liquid.