Connectors of metal for pipes; Couplings and joints of metal for pipes; Junctions of metal for flexible pipes; Junctions of metal for rigid pipes; Manually operated metal valves; Metal couplings and joints for pipes; Metal couplings for pipes; Metal hose fittings; Metal thread adapters for use with hydraulic and pneumatic systems; Pipe couplings and joints of metal; Structural joint connectors of metal; Valves of metal, other than parts of machines; Valves of metal other than parts of machine...