6
Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
metal pipe fittings consisting of couplings, joints, connectors, unions, adapters, and manually operated metal mechanical valves; manually operated metal valves for fluid conduits and fluid systems; metal tubing; metal pipe elbows, t's and y-fittings; metal pipe union couplings; metal pipe couplings; caps; metal branch connectors; metal bulkhead fittings; metal expansion joints for floors and walls; flanged fittings, t's, and elbows; floor flanges; and pipe hangers; all manufactured of cast or wrought metal common metals and their alloys; pipes and tubes of metal
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
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; valves, namely, 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
17
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
pipe system components for use in pumping fluids, namely, pipe valves; fittings and spacers; tubing; elbows; t-s; y-fittings; union couplings; couplings; caps; adapters; bushings; reducers; venturis; bulkhead fittings; crosses; crossovers; eccentric couplings; return bends; flanged fittings, t's and elbows; floor flanges, flexible nipples and cutoff nipples, all fabricated of a molded cast or extruded plastic