11 PLUMBING, HEATING, AND VENTILATION PARTS AND FITTINGS - NAMELY, TUBING; ELBOWS; T'S; Y-FITTINGS; UNION COUPLINGS; COUPLINGS; CAPS; ADAPTERS; AIR CHAMBERS; BUSHINGS; REDUCERS; TRAPS; VENTURIS; BRANCH CONNECTORS; BULKHEAD FITTINGS; CROSSES; CROSSOVERS; ECCENTRIC COUPLINGS; EXPANSION JOINTS; DRAIN FITTINGS; FLANGED SINK ELBOWS; RETURN BENDS; FLANGED FITTINGS, T'S, AND ELBOWS; CLOSET FLANGES; FLOOR FLANGES; CONNECTORS AND ADAPTERS FOR SOIL PIPE; CLOSET ELBOWS; PIPE HANGERS; STACK AND DRAINAGE FITTINGS ALL FABRICATED FROM COPPER, WROUGHT COPPER, OR CAST BRASS OR BRONZE OR FABRICATED OF A MOLDED, CAST, OR EXTRUDED PLASTIC; ALSO VALVES INCLUDING GATE VALVES, FAUCETS, SILLCOCKS, BOILER DRAINS, GLOBE, BALL, ANGLE AND U-VALVES, STOP AND WASTE VALVES, CHECK VALVES, BUTTERFLY VALVES, MANUFACTURED OF CAST BRASS, BRONZE OR IRON FOR USE IN HEATING, PLUMBING AND VENTILATION SYSTEMS AND INSTALLATIONS; AND IRRIGATION SYSTEMS AND PARTS THEREFOR - NAMELY, PERFORATE AND IMPERFORATE TUBING, TUBING FITTINGS, CLAMPING RINGS, VALVES, PRESSURE REGULATORS, FILTERS, INJECTORS, WATER DISTRIBUTING SPRAYERS, SPINNERS, AND PROPORTIONAL FEEDERS