Abstract: A row of openings on the same axis are located on a rotary fitting mounted on a front face of a cylindrical nozzle body having a longitudinal bore. A nozzle retainer is mounted within the longitudinal bore and has a tapered seal within an inner channel. A passageway within the tapered seal aligns with a channel in the rotary fitting leading to the row of openings. A filled resin is pumped through the nozzle openings via a standard resin gun. When the nozzle openings plug with resin, the rotary fitting is turned 180 degrees and the plug material is evacuated by a pressurized fluid.

Abstract: A spray nozzle includes a central resin nozzle and peripheral catalyst nozzles as well as air nozzles designed to emit streams of air to shape the flow of the resin material from the resin nozzle. The resin nozzle is mounted on a rotary fitting allowing the direction of the resin nozzle to be reversed 180.degree. to permit cleaning of the resin nozzle. The air nozzles consist of passageways through the rotary fitting that are aligned with respective sources of air pressure when the rotary fitting is positioned to permit spraying of resin through the resin nozzle.