11 Level control valves for water apparatus, relief valve (regulators) for water apparatus, automatic irrigation equipment for agricultural use, water softening devices, water purification devices, reverse osmosis water devices, water purification installation, filters and engines for waste purification plants, filter and engine combinations for water purification apparatus; lighting fixture, lamps, bulbs, lights, air-conditioners, ventilators, radiator and natural gas installations, steam boilers, boiler exchanger, burners, solar energy collectors and devices for heating, heat pumps; taps for water and gas installations and water control commanding systems