Settling tanks, sludge putrefaction pits, pool covers, ducts, pipes, valves of cast steel, valves of steel, overflows, non-return valves, gratings, duckboards, sand separation pits, distribution devices (piping), fixed scraper bridges, frames and plates for filter presses, silos for filter press cakes; all the aforesaid goods for completing installations for storage and treatment (for instance purification, preparation, disinfection, ventilation, iron removal, phosphorus removal, denitrification, decarbonization, irradiation) and for transport and disposal of water, detritus, sludge or filter press cakes; construction elements for drainage of rain water and gray water, namely drains (and siphons) of roofs, cellars, balconies, wash-up rooms, floors, paths, hangars, roads and bridges; drainage grates, gutters, manhole covers, manhole elements, well ladder rungs, gutter covers, channels and large floor outlets, valves, cleaning valves, check valves, protection against the water back-flow, flushing valves, flushing traps, drain pipes, plates for shafts and gullies; all the aforesaid goods made entirely or partly of metal; safety seals against hydrocarbon leaks in pipe lines.

Machines and parts thereof for storage, treatment (for instance purification, preparation, disinfection, ventilation, iron removal, phosphorus removal, denitrification, decarbonization, irradiation), for transport and disposal of water, detritus, sludge or filter press cakes, in particular valves, weirs, sand sifters, sand washers, sieves, sifters, raking machines, rotating or mobile scraper bridges, surface aerators, aeration rotors, aeration turbines, submersible aerators, slow-running mixers, high-speed mixers, mixing screws, propellers for blending, mixing bridges, surface scrapers, scrapers, sand scrapers, rotary distributors, sludge thickeners, mud conveyors, scraper conveyors, trough wheels, waste water pumps, slurry pumps, waste crushing machines, presses for waste, filter presses, frames and plates for filter presses, apparatus for circulation and mixing, for introducing gases, for vaporization thereof or spinning of surface layers for treating digested slurry; filter press cake conveyors; mechanical apparatus for drainage of rain water and gray water, namely hydrocarbon separators, decantable material separators, valves, flushing valves, vacuum pumps for use in cellars; machines and apparatus for use in the manufacture of concrete building materials, namely mixing machines with integrated metering devices, machines for the manufacture of cement blocks, transport and packaging machines, molds, complete manufacturing vibrators and installations constructed from the aforesaid goods, foundry machines and their components, namely molding machines, molds, core forming machines, centrifuges for sand, unmolding machines, apparatus for preparing sand, hydraulic control units, complete manufacturing plants composed of the aforesaid goods.

All goods in class 7 including machines, mechanical appliances and parts thereof as included in class 7 for the storage, treatment (for example cleaning, treating, sterilisation, aeration, deferrization, dephosphatisation, denitrification, decarbonisation, irradiation), conveying and discharge of water, screenings, sewage sludge and filter cake, particularly sand graders, grit washers, screening machines, screen cleaners, transportable or rotating basin bridges, surface aerators, submerged aerators, agitators, picket fence rabblers, circulating screws, circulating propellers, circulating bridges, floating material removers, sludge removers, sand trap removers, rotary sprinklers, sludge concentrators, sludge conveyors, scraper conveyors, bucket wheels, sewage pumps, sludge pumps, screenings reducers, screenings presses, filters, filter presses, digestion tanks and their equipment such as mechanical circulating appliances, agitating appliances, gas injection appliances, spraying appliances and/or floating layer eddying appliances for the treatment of digested sludge; filter cake conveyors; mechanical appliances for burning and incinerating sewage sludge and screenings; mechanical appliances and components for drainage of buildings, sites and roads, namely low-density liquid separators, low-density liquid barriers, sediment separators, shut-off valves, backwater cutoffs, backwater security devices, flushing flaps, flushing doors, channel flushers, sewage siphon installations, floor runoffs with pump, cellar drainage pumps; machines and mechanical appliances for the concrete block industry, namely metering and mixing machines, block production machines, transport machines and packaging machines, moulds, vibrators, complete block production plants assembled from the above-mentioned goods

Technical planning and preparation of building projects; provision of services of an architect and site engineer, particularly in the field of hydrological building and civil engineering projects and of sewage purification plants, sewage systems, water supply plants, purification plants for water, air and gas disposal plants for sludge, screenings and refuse; provision of engineer services, particularly statics calculations, production of construction drawings, technical planning (engineering) in the field of drainage, water supply, water treatment and sewage disposal; execution of research, measurements and analysis in the field of environmental pollution, carrying out investigations and surveys in the above-mentioned field; materials testing; monitoring of pollution of waters, air gases and reservoirs, also of the operation of drinking water plants and sewage purification plants; operation of sewage purification plants and experimental clarification plants for third parties

Machines and machine tools for the production and the operation of devices for storing, treating, transporting and draining-off of liquids, wastes of all kind, screenings, sludge and filter cake

Weighing, measuring, signalling and checking (supervision) apparatus and instruments, apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, in particular for devices for storing, treating transporting and draning-off of liquids, waters of all kind, screenings, sludge and filter cake