Abstract: A liquid atomizing nozzle is provided which is designed to receive various types of impellers in a chamber just preceding an orifice for the purpose of fracturing the liquid such as water to thereby facilitate the generation of fine fogs or sprays. The interchange of impellers and cleaning of nozzle and impeller chamber is simplified by the provision of a separate detachable inlet member to the nozzle which is designed to also retain the impeller in its chamber and to supply a jet stream of liquid thereto. The inlet member is in the form of a separate connector provided with an entry segment of greater diameter then a narrower exit segment connectable to the impeller chamber in a manner which encloses the chamber and retains the position of the impeller.