For Low Flow Applications

Designed for plants with 1 MGD or less average flow, the Duperon® FlexRake® Low Flow is pre-engineered to save you time and money.

Low FLow

Duperon® FlexRake® Low Flow Screen

  • No Lower Sprockets, Bearings, or Tracks to Foul or Jam

  • Adapts to a Range of Debris Variations

  • Tear-Shaped Bars are 20% to 50% More Efficient

    Duperon® FlexRake® Low Flow

    A front-clean, front-return, mechanically cleaned bar screen technology

    Specifically designed for plants of 1 MGD or less average flow with channels 2 feet to 6 feet deep by 1 foot to 2 feet wide.

    Bar openings of 1/4 inch, 1/2 inch, 3/4 inch, and 1 inch are available

    Duperon® FlexRake® Low Flow Features and Benefits

    Low Maintenance

    With no lower sprocket, FlexRake® technology allows all maintenance to be performed from the deck; no jam points underwater to require diving or confined space entry. No scheduled lubrication or maintenance is necessary.


    Integral enclosure, spray bar, and all stainless steel construction. Simple control system available.

    UHMW Low Flow SmartLink™ Technology

    The corrosion-resistant multifunctional links provide long operation life and permit "dry" operation.

    Energy Efficient

    The low horsepower requirements of the Sumitomo drive ensure a low-cost, energy-efficient method of debris removal.

    Efficient Hydrodynamics

    Depending on approach velocities, tear-shaped bars are 20% to 50% more efficient.

    Duperon® FlexRake® Low Flow General Specifications


    Average Flow Capacity: 1 MGD
    Peak Flow Capacity: 4 MGD
    Channel Width: 1 -2 ft wide nominal
    Maximum Liquid Level: 22”
    Screen Area: 3.5 ft (vertical projection)
    Bar Opening: 1/4", ½”, ¾”, 1”
    Range of Channel Depth: 2’ to 6’
    Minimum Water Depth: 0”
    Discharge Height: 32.5” as measured from deck (max)
    Unit Height: 65.5” as measured from deck
    Unit OAL Width: 41.5” measured at widest point
    Lifting Capacity: 500 lb


    1 Phase: (115 volt or 230 volt)
    3 Phase: (240 volt or 480 volt)


    Discharge Rate / Cleaning:  Every 24.7 seconds
    Scraper Travel Speed: 50.5”/minute

    Materials of Construction

    Drive Mechanics: 304 Stainless Steel
    Enclosure/Dead Plate: 304 Stainless Steel
    Screen Bars: 316 Stainless Steel
    Chain/Scrapers: UHMW-PE – UV Stable
    Motor: Steel with Std DC Coatings

    Standard Materials of Construction

    Standard: 304 Stainless Steel
    Available in: 316 Stainless Steel

    Controls Functionality

    Emergency Stop
    Run Monitoring (Dry Contact)
    Explosion-Proof Controls Available*

    *Custom site wiring is necessary with explosion-proof option. Main panel is remote mounted, explosion-proof motor and NEMA 7/9 push button station provided. Wiring completed per local requirements.

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