Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, incl. pressure-reducing valves and thermostatically controlled valves; parts thereof (HS code(s): 8481); Mechanical systems and components for general use (ICS code(s): 21); Fluid systems and components for general use (ICS code(s): 23); Copper alloy single taps; combination tap assemblies; stop valves ; single lever mixers