Appliances, equipment and installations for the distribution, filtering, recycling, decontamination, purification, maintenance, control and treatment of water from ponds and swimming pools; dosing pumps for ponds and swimming pools; automatic chlorinating, oxygenizing, ozonizing devices for ponds and swimming pools; fountains and ornamental fountains; recreational and rehabilitational swimming devices, valves for installations, operation of ponds and swimming pools.;