11 Apparatus and instruments for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; plumbers' and engineers' hardware included in this class, including but not restricted to, installations for water supply, storage and distribution, taps, mixer taps, cocks and valves; cisterns, baths, showers, lavatories and other water supply installations; parts of, components and fittings for the aforegoing goods