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Check valves for civil and industrial plants (other than parts of machines); metal sluice gates for fluids; tanks of metal; couplings of metal for pipes; metal fittings; metal flanges; metal junctions for pipes; couplings of metal for fire hoses; water-pipe valves of metal; valves of metal other than parts of machines; manually operated metal valves, other than parts of machines; drain traps [valves] of metal; valves of metal, other than parts of of machines including those made from alloy steel and titanium; metal storage tanks and roofs therefor; liquids storage tanks of metal; water storage tanks of metal; water tanks of metal for household purposes. Water pressurization pumps for fire-fighting systems; hydraulic shut- off valves for liquids; hydraulically operated butterfly valves; centrifugal pumps for liquids; multistage screw pumps; hydraulic pumps; electric pumps; positive displacement pumps; collectors for pumps; pumping units; starters for operating pumps; electric compressors, filters for machines; base plates for hydraulic pumps; valves; hydraulic valve actuators; pneumatic valve actuators; pump control valves; control valves for regulating the flow of gases and liquids; unloading check valves for the outlets of air compressors; automatic inlet control valves for reciprocating air compressors; valves of machines; pressure valves [parts of machines]; valves [parts of machines]; valves [parts of pumps]; valves being parts of machines; control valves for regulating the flow of gases and liquids [parts of machines]; water pumps for water filtering units; vertical turbine pumps; vacuum pumps [machines]; sump pumps; reverse osmosis pumps; silt pumps; sludge pumps; pumps [parts of machines, engines or motors]; electric water pumps for swimming pools; water pumps for swimming pools; electric water pumps; pumps [machines]; pneumatic pumps; rotary pumps; submersible pumps; centrifugal pumps; suction pumps; ball valves; pressure reducers for water and air. Automatic air supply apparatus for autoclaves; water controlling valves; liquids level controlling valves; air valves for fluids; liquid level controlling valves in tanks; metallic autoclaves; expansion vessels for heating installations; electric kettles for water; hot water accumulators for heating; safety valves for water pipes; taps; water treatment filters; hydrants; water spouts for hydrants; filtering baskets; filtering apparatus for water supply systems; automatic water softening apparatus; Ultra Violet sterilizer apparatus for water; sewage purification plants for civil purposes; water collecting and purification plants; septic tanks; biological basins being water purification and treatment systems; sprinkler system for irrigation, desalination plants for water; level controlling valves in tanks; water purification tanks; pressure water tanks; hot water tanks; wastewater treatment tanks for household purposes.