Patent ID: 6394366
Filing Date: 2002-05-28
Classification: B05B

Abstract:
A spray nozzle for a fire protection system adapted to discharge a spray pattern generally shaped as a hollow cone, the nozzle comprising:a hollow, elongated body having a mounting end adapted for connection to a fire extinguishing fluid line and a discharge end opposite the mounting end; and an integral core subassembly which is mounted to the discharge end, the core subassembly including: a unitary core holder having a plate portion and an annular wall portion extending from a periphery of the plate portion, a discharge orifice disposed in the plate portion; a generally disk shaped core having an upstream surface, a downstream surface opposite the upstream surface and a circular, peripheral edge, at least one sloped passage disposed in the core to permit fluid communication between the upstream side and the downstream side; wherein core is mounted to the annular wall, the downstream surface of the core facing and being spaced from the plate portion of the core holder to define a cylindrical whirl chamber, and wherein the core subassembly is mounted to the discharge end of the elongated body.