The specialists for environmental technology

FSM - Center Flow Screen

    The FSM Center Flow Screen was developed to deal with particular problems associated with waste water pre-treatment and raw water intake. FSM is working in this field since 1973. The first machines are used to generate cooling water for power plants from rivers.

    Parallel to the increasing demands of users, FSM introduced modifications to the basic design. These have resulted in an optimum product for the preliminary treatment of waste or river (sea) water - providing high performance coupled with low operating costs.  The Center flow screen is a very fine screen with a high screenings capture rate and excellent protection for membrane systems.

    Functional principle:

    The unscreened water enters the screen inlet which is in the middle of the screen frame and is effectively screened as it flows from the inside to the outside through both sides of the screen filter elements. The filter elements form a continuous filter belt which is cleaned by a spray bar at the upper deflection point.
    The water flows through the screen elements which are covered either by a woven wire mesh made of stainless steel with up to 3 mm openings or with perforated plates made of stainless steel or UHMWPE from 1 up to 12 mm openings which create a barrier to the passage of suspended contaminants and removes them for disposal. With mesh smaller 3 mm the horizontal space between the adjoining panels is positively sealed to prevent solids escaping thru the gap as would be the case if it was not sealed. The cleaning process can be assisted by an optional brush in dependence on the screenings load, if perforated plates are used.
    The screenings can be discharged into containers, screening washing press, screw conveyors, etc. The screen element and screen frame are sealed at the sides to prevent solids from circumventing the filter. The filter elements can be individually and quickly exchanged for ease of maintenance.
    For a save removal of fishs etc. we can install optional fish bags.


Applications - Center Flow Screen

     Applications in municipal and industrial clarification plant
    • Waste water pre-treatment / fine screening
    • Membrane treatment plant

    Applications in power stations
    • River or sea water screening

    Applications in potable water treatment plants
    • River or sea water screening

Features, Dimensions and Material


    • High reliability and ensured continuity of operation resulting from robust construction
    • Design caused no carry over effect of screenings to the downstream
    • Filter elements optimally cleaned by a spray bar and optional by a brush
    • Screenings conveyed positively  to the discharge point
    • Excellent cost/performance ratio
    • Low maintenance costs
    • Suitable for outdoor sites / operation in winter
    • Easily adapted to suit changed operating conditions
    • Machine completely enclosed for optimum odor control


    filter width 300 to 5000 mm  
    shaft center distance up to 15000 mm, larger sizes on request
    filter element mesh size 0,5 to 3 mm, larger sizes on request
    filter element perforation 1 to 12 mm, larger sizes on request
    mounting angle 90°



    machine frame stainless steel SS304 or SS316, other materials on request
    filter element stainless steel SS304, SS316 or UHMWPE, other materials on request
    chains wear resistant steel or wear resistant stainless steel
    rollers PA, wear resistant steel or wear resistant stainless steel
    chain sprockets wear resistant steel or wear resistant stainless steel
    chain supports stainless steel SS304 or SS316, other materials on request
    side sealing HDPE
    drives geared motors, make SEW    
    use withsea/brackish water sea water resistant material for screen frame, filter panels, chains and sprockets


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Weltweit zufriedene Kunden.

Wir sind seit vielen Jahrzehnten die Spezialisten der Wasser- und Abwasserreinigung und haben unzählige Projekte im In- und Ausland erfolgreich ausgeführt.

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Consulting & Support

FSM Frankenberger GmbH

Operating facility Pohlheim

Vor dem Hohen Stein 1
D-35415 Pohlheim

+49 (0) 64 04 - 91 94 0
+49 (0) 64 04 - 91 94 91

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Exciting projects successfully implemented in over 20 countries on 5 continents.

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Thinking about tomorrow today. We have been developing products designed to be sustainable, flexible and durable with this in mind for 50 years.

Innovative design

Integrated solutions at the highest technological level, seamlessly adapted to the existing workflow by our engineers.

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