Economical equivalents with quick delivery for membrane replacement of your water and wastewater treatment projects.

Products >> Industrial RO Membrane >> Brackish Water RO Membrane

  • BW30-400/34 Equivalent
BW30-400/34 Equivalent

BW30-400/34 Equivalent


Equivalent, replacement, alternative, analog, retrofit, analogue: DuPont DOW Filmtec BW30-400/34, BW30 400 34

General Information

TFBW-8040LFR is manufactured as an equivalent, direct replacement, alternative, analog, retrofit and analogue for DuPont DOW Filmtec BW30-400/34 RO membrane.
TFBW-8040LFR reverse osmosis membrane elements are developed for brackish water treatment with high performance of fouling resistance, ideal for reverse osmosis plant managers and operators dealing with brackish water with normal pre-treatment.
TFBW-8040LFR reverse osmosis membrane element provides consistency, high-quality filtrate, high performance and productivity, and long service life.

Features & Advantages

  • Improved feed spacer to thicker channel
  • Optimized design, good resistance to fouling
  • Greater restorability after chemical cleaning
  • Direct and economical element replacement



  • Municipal sewage
  • Industrial wastewater
  • Industrial process water
  • Reclaimed water recycling etc.



  • Configuration: Spiral wound element
  • Membrane Polymer: Polyamide thin-film composite


    Element Part Number

    Membrane Active Area 
    2 (m2)

    Feed Spacer 

    Permeate Flow Rate*
    GPD (m3/d)

    Stabilized Salt Rejection** 

    Minimum Salt Rejection


    400 (37.2)

    34 (0.864)

    10,500 (39.7)



    Standard test conditions:
    The above performance is initial(data record after 30 minutes of operation), based on the following conditions:
    2,000 ppm NaCl solution
    225 psi(15.5 bar) operating pressure
    25°C(77°F) operating temperature
    15% permeate recovery
    7.5-8 pH range
    *Permeate flow for individual elements may vary but will be no more than ±15%.
    **Stabilized salt rejection is generally achieved within 24-48 hours of continuous use; depending on feed water characteristics and operating conditions.
    Element Dimensions
    DuPont DOW Filmtec BW30-400/34 Equivalent Dimensions


    Length A

    inch (mm)

    Diameter B

    inch (mm)

    Permeate tube inner diameter C

    inch (mm)


    40 (1,016)

    7.9 (201)

    1.125 (28.6)

    Operating and Cleaning Limits

    Maximum Operating Pressure

    600 psi (41 bar)

    Maximum Operating Temperature

    45°C (113°F)

    Maximum Chlorine Concentration

    0.1 ppm

    pH Range, Continuous


    pH Range, Cleaning


    Maximum Feed SDI (15 mins)


    Maximum Element Pressure Drop

    15 psi (1 bar)

    Maximum Feed Flow

    17 m3/h

    Minimum Ratio of Concentrate to Permeate Flow for Each Element


    Previous Product:BW30-400/34i Equivalent Next Product:TM720D-400 Equivalent

    Contact Us

      Name: Mr. Darren Wang

      Tel: +86-513-85556619

      Fax: +86-513-85556620

      E-mail: [email protected]

      Add: No. 60 Shengde Road, Tongzhou District, Nantong, Jiangsu Province, 226000, China.