AUTOMATIC SPRINKLER SYSTEMS FOR FIRE PROTECTION, AND PARTS THEREOF-NAMELY, ADAPTERS, ALARM VALVES, AUTOMATIC RELEASES, AIR TUBING, BALL DRIPS, CEILING PLATES, FIRE EXTINGUISHING SPRINKLERS, CHECK VALVES, COMPRESSION COUPLINGS, COMPRESSION FITTINGS, COMPENSATING VENTS, DRUM DRIPS, DELUGE VALVES, AUTOMATIC AIR RELEASING VALVES, EXPANSION JOINTS, FUSE LINKS, FLOOR PLATES, FLOOR SLEEVES, HYDRAULIC VALVES, HOSE VALVES, MANUAL PULLS, MERCURY AIR CHECKS, OUTSIDE ALARM COVERS, PIPE H