The powerful Hydropression* eliminates clogging and blinding - allows debris to be easily skimmed away. Efficiently handles difficult-to-screen contaminants such as particulate matter, grease, paper, plastic and hair.

*Patent Pending


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The Duperon Perforated Plate utilizes reliable, patented FlexRake technology: all of the simplicity of the FlexRake available to Ultra Screening applications. No submerged bushings or bearings, simple maintenance, few spare parts.

Simple, non-moving screen is less troublesome; eliminates carryover, complex spray systems, and seal leakage found in rotating plate segments. No extrusion, with the added mechanical simplicity of a passive screen.

Rather than a rotating screen, movement of the effector plate behind the screen effectively removes and forces debris upward. As debris is forced from the screen, FlexRake mounted debris skimmers raise debris efficiently to the surface for transfer to the debris collection trough.

Tri-Poly Seals assure durable sealing at the channel wall, providing optimum protection for micro-filtration technologies.

The Hydropression Effect was born from study of the hydromechanical phenomenon known as the the thin plate theory, and the investigation of its possible application to preliminary liquids/solids separation challenges.

Research conducted in the Duperon R&D lab and in subsequent field tests in wastewater applications proved that the Hydropression Effect could provide sufficient counter-positioned negative hydraulic pressure zones and positive hydraulic pressure zones. These generate a powerful reversed and upward flow sufficient to provide continuous, effective cleaning.