Common metals and their alloys; metal building materials; non-electric cables and wires of common metal; pipes and tubes of metal; goods of common metal not included in other classes; articles and connectors of metal for use as plumbing fittings; flow control devices (valves) of metal, other than parts of machines; flow isolating valves of metal; fluid flow valves of metal; valves (manual) of metal for regulating fluid flow; valves (taps) of metal for controlling flow; valve assemblies of metal (other than parts of machines)