Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes in the nature of water desalination plants, water conduit units, namely, pipes being parts of a purification system, mixer faucets for water pipes, water purification units, water filters, water purification tanks, regulating accessories for water or gas apparatus and pipes, plumbing fitting, namely, valves, water filtering apparatus, water softening units, water ...