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  • Filmtec BW30-400 RO Membrane

  • DOW Filmtec BW30-400 RO Membrane 10500 GPD, an 8" x 40" high productivity brackish water Reverse Osmosis Membrane that can provide RO quality water up to 10,500 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 large-scale industrial and municipal water treatment systems purifying greater than approximately 10 gpm (2300 L/h) of RO water and is the industry standard for reliable operation and production of the highest quality water in commercial applications. It was the first 400 square foot membrane elements on the market and continues to be widely used in new equipment and retrofits where system capital and productivity are factors. 

  • These elements are ideal for reverse osmosis plant managers and operators dealing with controlled pre-treatment and seeking consistent, high performance, long element life and increased productivity.
    Filmtec 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. This minimizes equipment CAPEX in designs with savings in elements and pumping due to the 400 ft² active area while delivering the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1-13) tolerance. The 400 square feet(41 square meters) of active membrane area, gives system designers the option of designing a system with fewer membrane elements, requiring lower capital expenditures for membranes and components. This element is widely used in industrial water demineralization, production of municipal drinking water and water reuse.

    Key Features and Benefits:

    • 10,500 Gallons per day.
    • 400 sq ft active area.
    • 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, can be cleaned for Long Element Life.
    • DOW FilmTec high quality, long lasting and reliable performance.


    Model/SKU: DWC64
    Manufacturer ID(Part#): BW30-400 (Part #80610 )
    Dimensions(Diameter x Length): 8 x 40(actual 7.9 x 40)
    Stabilized Salt Rejection: 99.5%
    Permeate Flow Rate(Gallons per Day, gpd): 10,500 Gal/Day *
    Maximum Feed Flow Rate(Gallons per Minute, gpm): 85 gpm (19.3 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: Spiral-wound with Polyamide Thin-Film Composite
    Active Area: 400 ft² (37 m²). ****
    Outer Wrap: Hard fiberglass outer shell
    Housing/Pressure Vessel Size(inch): 8 inch
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