Defender® channel screen conveyors are versatile equipment that is used in the straining, compaction and transportation processes for mechanical sewage treatment. The installation of these facilities prevents various in type and dimension solids from entering the wastewater and prevent causing the sewers, reservoirs and pipelines clog, and protects the rest of the equipment at the plant from overloading, blocking and wear. The lattice structure in form of bent half-pipe is made of stainless steel with perforations from 1 to 10 mm in size. The characteristic design of the equipment is specially designed for its easy installation in cannals, the implementation can be tailored to the specific needs at different angles and can be offered in two versions with and without compacting bathtub. As advantages of the offered equipment can be emphasized its high transport capacity and easy cleaning (brushes mounted on the outside of the screw keep the grille constantly clean). In the presence of a sealing bathtub for the grid cleaning system are provided water jets. The installed screws are resistant to friction due to the reinforced inner surface of the conveyor tube.