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Suction pumps, sump pumps, positive displacement pumps, aquarium pumps, swimming pool pumps, submersible pumps, pumps for hot water, wet rotor pumps, booster sets, namely complete pump systems, comprising pumps, control panels, suction and delivery manifolds assembled on basements, centrifugal pumps, electropump machines, electropumps as parts of machines, machines and machine tools, motors and engines (except for land vehicles), machine coupling and transmission components (except for land vehicles), agricultural implements other than hand-operated, incubators for eggs. Coolant recovery systems comprising reservoirs, pumps, filters and cleaners, dripper irrigation systems comprising pumps, valves, filters and regulators, filters, heaters and pumps sold in combination for use in swimming pools or hot tubs; water fountains, lawn sprinkler systems comprising pumps, valves and filters, sewage disposal plants and pumps, sewage treatment plants and pumps, apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purpose.