WATERFRONT

Metal manually operated flow control valves not being parts of machines; manually operated metal valves for controlling the flow of liquids other than parts of machines; butterfly valves of metal other than parts of machines for controlling fluid flow; metal conduits; metal penstock pipes; flap valves of metal not being parts of machines; non-return valves of metal not being parts of machines; sluice gates and drain pipes made of metal; knife gate valves of metal not being parts of machines; fluid flow valves of metal other than parts of machines; metal valves not being parts of machines