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DOW FilmTec Membranes
DOW FILMTEC 8" Diameter Brackish Water Elements for Industrial Applications

DOW FILMTEC™ Brackish Water RO Elements with a 8-inch diameter provide consistently high performance and enhanced element life when treating difficult industrial water, enabling lower energy usage and reduced costs.

Shortcuts: BWRO Elements   Low Energy RO   Fouling Resistant   Discontinued Elements


Benefits of DOW FILMTEC 8" Brackish Water RO Elements

  • Reverse Osmosis removes up to 99% of total dissolved solids.
  • RO membranes remove dissolved impurities such as chloride, lead, chromate, fluoride, bacteria and others. Click here to view the nominal rejection characteristics of thin film membranes.
  • BW30 elements provide longer life due to increased resistance to fouling and high cleanability.
  • LE & XLE elements reduce operating costs due to lower energy requirements.
  • Fouling resistant elements reduce cleaning requirements and operational cost
  • iLEC™ interlocking elements are available in some models and offer the following benefits:
    • Reliable and long-term seal integrity – The single, non-sliding seal reduces the number of potential leak sites and is evenly compressed upon installation.
    • Leak-tight performance – The iLEC design eliminates the possibility of o-rings being rolled from their grooves or pinched and damaged during operation.
    • Lubricant-free operation – Omission of o-ring lubricant to preserve permeate quality, such as in ultra-pure water applications, will not compromise sealing performance.
    • Backward compatibility – Compatibility with existing hardware is maintained.  The smooth inner bore located at  each end of the permeate collection tube is unchanged, permitting insertion of sliding couplers and existing vessel adapters.  The net length of the elements, when connected, remains 40 inches.
    • Reduced permeate pressure drop – Internal couplers and vessel adapters account for more than 70 percent  of the permeate-tube pressure drop in some systems. The interlocking endcap design minimizes these restrictions, imposing less permeate backpressure.

DOW FilmTec 8" Brackish Water High Rejection RO Membrane Elements
225psi Operating Pressure

Model No.

Permeate Flow Rate

Size
(Dia.× L)

Active Surface Area

Feed Spacer Thickness

Applied Pressure

Minimum Salt Rejection

Stabilized Salt Rejection

gpd

m³/d

BW30-365

9,500

36

8”×40”

365 ft2

34 mil

225 psi

99.0%

99.5%

BW30 PRO-400/34

11,000

42

8”×40”

400 ft2

34 mil

225 psi

99.4%

99.6%

BW30HR-440

12,650

48

8”×40”

440 ft2 

28 mil

225 psi

99.4%

99.7%

iLEC Interlocking Membrane Elements

BW30 PRO-400/34i

11,000

42

8”×40”

400 ft2 

34 mil

225 psi

99.4%

99.6%

BW30HR-440i

12,650

48

8”×40”

440 ft2 

28 mil

225 psi

99.4%

99.7%

Product Availability Notes

  • BW30-400 and BW30-400/34 have been discontinued by the manufacturer and are no longer available. BW30 PRO-400/34 is the recommended replacement.
  • BW30-400/34i has been discontinued by the manufacturer and are no longer available. BW30 PRO-400/34i is the recommended replacement.

Low Energy and High Rejection Brackish Water RO Membrane Elements
125-150 psi Operating Pressure

The DOW FILMTEC low energy and extra low energy, high productivity brackish water reverse osmosis elements are designed to deliver high quality water at low operating costs for municipal and industrial water applications.   DOW FilmTec LE and XLE Elements provide lower energy costs and more productivity, especially in cold waters, and minimize equipment CAPEX in designs with savings in elements and pumping.

Model No.

Permeate Flow Rate

Size
(Dia.× L)

Active Surface Area

Feed Spacer Thickness

Applied Pressure

Minimum Salt Rejection

Stabilized Salt Rejection

gpd

m³/d

XLE-440

14,000

53

8”×40”

440 ft2

28 mil

125 psi

98.0%

99.0%

BW30HRLE-440

12,650

48

8”×40”

440 ft2

28 mil

150 psi

99.1%

99.3%

iLEC Interlocking Membrane Elements

BW30HRLE-440i

12,650

48

8”×40”

440 ft2

28 mil

150 psi

99.3%

99.1%

Fouling Resistant DOW FilmTec RO Membrane Elements

DOW FILMTEC Fouling Resistant reverse osmosis elements incorporate Dow's proprietary FR (fouling resistant) membrane technology that provides excellent fouling resistance and cleanability and are designed to purify water with high biological or organic fouling potential in systems with well-controlled pretreatment. This high rejection membrane has a wide pH cleaning range (pH 1-13) that allows for effective cleaning of scale, organic compounds, and biofilm. These features offer system operators some of the best long-term economics and most trouble-free operation for RO membrane purification of fouling water.

Model No.

Permeate Flow Rate

Size
(Dia.”× L”)

Active Surface Area

Feed Spacer Thickness

Applied Pressure 

Minimum Salt Rejection

Stabilized Salt Rejection

gpd

m³/d

BW30XHR PRO-400/34

11,500

43

8”×40”

400 ft2

34 mil LDP

225 psi

99.6%

99.8%

BW30XFRLE-400/34

11,500

43

8”×40”

400 ft2

34 mil LDP

150 psi

99.1%

99.3%

iLEC Interlocking Membrane Elements

BW30XHR PRO-400/34i

11,500

44

8”×40”

400 ft2

34 mil LDP

225 psi

99.6%

99.8%

BW30XFRLE-400/34i

11,500

43

8”×40”

400 ft2

34 mil LDP

150 psi

99.1%

99.3%

Product Availability Notes:

  • BW30XFR-400/34 has been disontinued by the manufacturer and is no longer available. BW30XHR PRO-400/34 is the recommended replacement.
  • BW30XFR-400/34i has been disontinued by the manufacturer and is no longer available. BW30XHR PRO-400/34i is the recommended replacement.

Permeate flow rate and salt rejection shown on this page are based on the following test conditions: 2,000ppm NaCl, design pressures listed above, 77°F (25°C), and 15% recovery. Permeate flow rates for individual elements may vary +25/-15%. The above specifications are benchmark values. Please be sure to operate according to our system design guidelines. Please see individual products’ specification sheet for operating limits and guidelines.

DOW FILMTEC 8" Brackish Water RO Element Features

DOW FilmTecBrackish Water Reverse Osmosis 8" Elements can separate salts from water and are produced with an automated fabrication process that ensures precision, consistency, and reliability. They are ideal for use in large-scale industrial and municipal water treatment systems that produce greater than approximately 10 gpm (2300 L/h) of permeate. Our RO membranes build on a tradition of leadership in the thin-film composite membrane industry and meet today's challenges for higher rejection using less energy and resisting foulants in challenging waters.  

  • High Flux Results in High Yields
  • High Active Area Reduces Number of Elements Required
  • High Rejection Results in Excellent Water Quality
  • Low Energy Usage Reduces Power Consumption And Costs
  • Fouling Resistant Reducing Cleaning Requirements and Operational Cost
  • Durable with Good Cleanability for Long Element Life
  • FilmTec Performance And Quality
  • Many models are available in iLEC interlocking style for direct connection of membranes in multi-element housings.

filmtec_dow_interlocking_membranes

filmtec_dow_ilec_interlocking_membranes

Applications for DOW FILMTEC 8" Brackish Water RO Elements

  • Industrial Water Treatment Systems
  • Food Service
  • Medical and Research Institutions
  • Hospitality Industry
  • Industrial Water Demineralization
  • Institutions
  • Hotels
  • Hospitals
  • Disaster Relief
  • Municipal Drinking Water
  •  Pharmaceutical
  • Manufacturing
  • Rinse Water
  • Bottled Water
  • Beverage
  • Food Processing
  • Industrial Water Treatment
  • Water Reuse
  • Wide Variety of Other Applications

Discontinued DuPont Dow FilmTec Membranes

The below DuPont FilmTec (Formerly DOW FilmTec) Membrane Elements have been discontinued by the manufacturer and are no longer available.    Please reference the table below for the specifications of these retired models, as well as the recommended replacement model

Retired Model No.
(No Longer Available)

   Replaced By:

 Comparison of Retired and Replacement Model Specifications  [ Retired | Replacement ]

Permeate Flow Rate (gpd)

Active Surface Area&nbsp
(Sq. Ft.)

Feed Spacer Thickness
(mil)

Applied Pressure (psi)

Minimum Salt Rejection (%)

Stabilized Salt Rejection (%)
BW30-400  BW30 PRO-400/34 10,500 | 11,000 400 | 400 28 | 34 225 | 225 99.0 | 99.4 99.5 | 99.6
BW30-400/34  BW30 PRO-400/34 10,500 | 11,000 400 | 400 34 | 34 225 | 225 99.0 | 99.4 99.5 | 99.6
BW30-400/34i BW30 PRO-400/34i 10,500 | 11,000 400 | 400 34 | 34 225 | 225 99.0 | 99.4 99.5 | 99.6
BW30XFR-400/34 BW30XHR PRO-400/34 11,500 | 11,500 400 | 400 34-LDP | 34-LDP 225 | 225 99.4 | 99.6 99.65 | 99.8
BW30XFR-400/34i BW30XHR PRO-400/34i 11,500 | 11,500 400 | 400 34-LDP | 34-LDP 225 | 225 99.4 | 99.6 99.65 | 99.8

BW30-365-IG

BW30-365

9,500 | 9,500

365 | 365

34 | 34

225 | 225

99.0 | 99.0

99.5 | 99.5

BW30-400-IG

 BW30 PRO-400/34 10,500 | 11,000 400 | 400 28 | 34 225 | 225 99.0 | 99.4 99.5 | 99.6

BW30FR-400

 BW30XHR PRO-400/34

10,500 | 11,500

400  | 400

28 | 34-LDP

225 | 225

99.0 | 99.6

99.5 | 99.8

BW30LE-440

LE-400

11,500 | 11,500

440 | 400

n/a | 28

150 | 150

98.0 | 99.0

99.0 | 99.3

BW30-440i

BW30HR-440i

11,500 | 11,500

440 | 440

28

225

99.0

99.5

Products for use with DOW FILMTEC 8-Inch Brackish Water RO Elements

Data Sheets for FilmTec Industrial 8-Inch BWRO Membrane Elements

Data Sheets for Obsolete Membrane Elements