Abstract: A misting head assembly including a cylindrical rotor having a chordal flat, a center post having a flow passage, a swivel arm having a tubular portion with a radial through opening mounted for swiveling about the rotor and a connecting portion. The swivel arm connecting portion is adapted for removable mounting of a spray nozzle thereto. The rotor flat defines with the center post housing portion and swivel arm tubular portion a longitudinal flow passage for conducting water from the center post to the swivel arm opening to be sprayed outwardly therefrom through the nozzle when the swivel arm is aligned with the chordal flat of the rotor. In one embodiment, seals are provided for sealingly preventing flow of water from the longitudinal flow passage when the swivel arm is swung from alignment with the chordal flat. An indicium is provided on one end of the rotor for indicating the open position of the nozzle.

Abstract: A method and apparatus for providing aqueous spray mist onto produce and the like provided in an upwardly opening case space. Water delivery to the nozzles is provided by an upwardly extending supply pipe within the case, eliminating the need for overhead mounting structure. The spray pattern and timed delivery are coordinated to assure proper misting of the produce with minimum adverse effect on customers selecting produce from the case.