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  • Filmtec Membrane bw30-4040

  • DOW Filmtec BW30-4040 RO Membrane 2400 GPD


    DOW Filmtec BW30-4040
    RO Membrane 2400 GPD, a 4" x 40" brackish water Reverse Osmosis Membrane that can provide RO quality water up to 2,400 gallons per day at a 15% recovery rate. It can operate at feed pressures ranging from 225 psi to 600 psi with 99.5% salt rejection. This element offers the highest quality water for a medium-sized water treatment system that produces less than approximately 10 GPM (2300 L/h) of permeate. This membrane element features the thickest feed spacer available in the industry today to lessen the impact of fouling as well as a fiberglassed shells.

  • These RO elements can separate salts from water and are produced with an automated fabrication process for precision, consistency, and reliability offering high rejection of dissolved solids and organics and operate very efficiently at lower pressures. The Thin Film-Commercial RO membranes have hard shell exterior and are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops. In addition to the highest quality water and the lowest energy costs, FILMTEC membranes also deliver savings by providing the industry’s longest lasting and most reliable performance due to increased resistance to fouling.

    This membrane is a part of the "Fiberglass Elements for Light Industrial Systems" line of products by DOW FILMTEC and are applied in industrial water de-mineralization, production of municipal drinking water, and water reuse. Its advanced technological design is manufactured for excellent structural stability and more productivity than other elements.

    Key Features and Benefits:


    • 2,400 Gallons per day.
    • 600 psi maximum operating pressure.
    • Removes chemical contaminants.
    • Reduce wastewater volumes by increasing water reuse.
    • High flux results in high yields.
    • Low energy costs with high rejection providing good water quality.
    • Hard shell exterior for extra strength.
    • Durable with Good Cleanability for Long Element Life.
    • DOW FilmTec high quality, long lasting and reliable performance.


    Model/SKU: DWC62
    Manufacturer ID(Part#): BW30-4040 (Part #80783 )
    Dimensions(Diameter x Length): 4" x 40" (actual 3.9 x 40)
    Stabilized Salt Rejection: 99.5%
    Permeate Flow Rate(Gallons per Day, gpd): 2400 Gal/Day (9,085 L/Day or 9.0 m3/day) *
    Maximum Feed Flow Rate(Gallons per Minute, gpm): 16 gpm (3.6 m3/hr)
    Applied Pressure(psi): 225 psi (15.5 bar)
    Maximum Operating Pressure(psi): 600 psi (41 bar)
    Maximum Pressure Drop(psi): 15 psi (1.0 bar)
    Maximum Operating Temperature(°F): 113°F (45°C)
    pH Range, Continuous Operation: 2 - 11 **
    pH Range, Short-Term Cleaning: 1 - 13
    Maximum Feed Silt Density Index(SDI): SDI 5
    Free Chlorine Tolerance(ppm): < 0.1 ppm ***
    Membrane Style: Drop-in Element
    Membrane Material: Polyamide Thin-Film Composite
    Active Area: 78 sq. ft.
    Outer Wrap: Hard fiberglass outer shell
    Housing/Pressure Vessel Size(inch): 4 inch
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