7 Waste pumps; basin covers, gullies, weirs, grates, grilles, inlets, circulation agitators and rotary sprayers being machine parts for machines for the purpose of storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, sewage sludge and filter cakes, as far as included in class 7; aeration rotors and aeration gyros being parts of waste processing machines sold separately from waste processing machines; nozzles being parts of waste processing machines; machine parts, namely, nozzle sprayers being parts of waste processing machines sold separately from waste processing machines; fixed, travelling, and rotating basin bridges and circulation bridges as parts of machines; filters for waste processing and fluid treatment machines sold separately from such machines; machine parts, namely, filter cake bunkers and conveyors as parts of waste processing and fluid treatment machines sold separately from such machines; filtering machines for chemical processing; Industrial machine presses, namely, filter presses; machine tools, namely, clamp connectors for piping as parts of machines; conveyor belts, namely, drag conveyors; piston pumps for machines; machines and mechanical devices for separating solid materials and fluids, namely, machines for separating target materials from mixtures of materials; diaphragm pumps as parts of machines; machine parts, namely, surface aerators being parts of waste processing machines sold separately from such machines; pumps for machines; pumps being parts of machines; shredding machines for screenings, not being paper shredders for offices; sieves being machine parts; sifting machines; waste compactors, namely, sludge compactors; waste material conveying machines, namely, sludge conveyors; sludge pumps; machine tools for removing waste material, namely, water separators in the nature of machinery for separating target materials from mixtures of materials; machine parts, namely, filter bands as parts of waste processing machines being sold separately from such machines; rabble rakes and raking screens being material separation components of sifting machines; industrial machine presses, namely, presses for screening materials for sifting, sorting, and separations purposes; rake cleaners being parts of sifting machines; tubes being fitted parts of machines; valves being parts of machines, namely, non-return flap valves; stirrers, namely, mechanical mixing machines; sand fenders being parts of sand sorting machines; gravel, stone, and sand sorting and electric industrial washing machines, namely, grit classifiers, grit washers; valves being parts of machines, namely, sliding valves; sliding panels being parts of machines for sorting sludge, sand, and particulate matter; floating matter collecting machines; sludge collecting machines; bucket wheels being parts of sludge collecting machines; trickling filters for sludge collecting machines; underwater aerators being machines; circulating screws in the nature of parts of fluid treatment machines; industrial screens and screen panels for industrial, agricultural, municipal, environmental, mining, surface water filtration and oil and gas purposes, with the aforementioned goods being machines, parts of machines, machine tools and agricultural implements other than hand-operated; well screens and screen panels being parts of oil well drilling and production machines and of gas well drilling and production machines; filtering machines for oil, gas, sludge, and wastewater processing, namely, filtering wells consisting of pump, filter and pipeline, with the aforementioned machines being for industrial, agricultural, municipal, environmental, mining, surface water filtration, and oil and gas purposes