fittings made of metal and fittings made predominantly of metal; pipe connectors made of metal; pipe connectors made predominantly of metal; mechanical parts and small hard ware items, namely, hand wheels for valves, [ washers for pipes and valves, ] adapters for valves and pipes, caps and end caps for valves and pipes all made of metal; [ and metal pipes ]

valves for radiators [ and pumps; pistons for valves and pumps; and parts therefor ]

control and safety plumbing fittings, namely, steam valves, pressure regulating valves, manually operated plumbing valves, turn-off valves, radiator valves, and pressure measuring valves [ ; and faucets ]

[ sealing, packaging and isolating materials, namely, insulating jackets for pipes; non-metallic hoses; non-metallic pipes; fittings made from non-metallic materials for heating devices, steam producing devices, cooking devices, cooling devices, drying devices, ventilation device, water line devices, sanitary installations, central heating systems, steam conduits, pressurized air conduits, water conduits and gas conduits; and pipe connectors made from non-metallic materials ]