Machines for filtering, dewatering, breaking up, thickening, processing and/or compacting sludges and their components; filters and filtering screens as parts of machines; industrial filtering machines, namely, wastewater filtering machines; sifting machines; rakes being screening machines; machine parts, namely filter screens; valves being parts of machines; screw conveyors; vertical conveyors used to move sludge; pressing machines, namely, industrial machine presses, presses for chemical processing; waste compacting machines; industrial screening machines, namely, wastewater screening machines; mechanical rakes being filter screens for use in clarifying installations; machines for removing solid materials from liquids and sludges; scrapers being parts of machines, used in the process of separating sludge; solid-liquid separators; separating machines, namely, fat oil and grease separators, separating machines for chemical processing; industrial machines for cleaning sand; industrial machines to separate sand; scrapers as part of machines

Water purifying apparatus and machines; apparatus, machines and installations for mechanical, chemical and biological water purification; Apparatus, machines and installations for mechanical, chemical and biological water treatment, namely, clarification and thickening machines for use in treatment of water; clarifying installations being fat oil and grease purifying installations, water purification installations; sedimentation basins as parts of sewage purification installations; purification installations for sewage