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  Top » Catalog » Membranes » FILMTEC/DOW RO Membranes » DOW FilmTec 8" Brackish Water Industrial RO Membranes » BW30FR-365

8"x40" | 9,500 GPD | 99.5% Rej | Fouling Resistant | FilmTec RO

8"x40" | 9,500 GPD | 99.5% Rej | Fouling Resistant | FilmTec RO
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Model BW30FR-365
Price $651.00  570.00 
Manufacturer DOW Filmtec
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DOW FilmTec Membrane Elements

DOW FILMTEC™  BW30FR-365 Fouling Resistant Reverse Osmosis 8" Element

DOW FILMTEC BW30FR-365 elements have purified high biofouling feed waters since 1997. Numerous customers around the world have experienced lower operating costs by using DOW FILMTEC fouling resistant elements due to their exceptional fouling resistance and cleanability. The BW30FR-365 element features:

  • A wide (34 mil) feed spacer to facilitate improved cleaning.
  • A proprietary modification to the FT30 membrane chemistry providing superior cleanability and resistance to fouling.
  • DOW FILMTEC membrane with one of the widest pH cleaning ranges in the industry (pH 1-13) allowing for effective cleaning of scaling, organic compounds and biofilm.
  • Efficient membrane element design with more, shorter membrane leaves to help reduce the overall effect of fouling.

The DOW FILMTEC BW30FR-365 element can be used for both potable and non-potable water applications.

A system designer can take advantage of this high productivity, high rejection, fouling resistant reverse osmosis (RO) element in any system design where the potential of high biofouling is expected. In addition, existing installations that are experiencing high biofouling or frequent cleanings can be upgraded by retrofitting to the FILMTEC BW30FR-365 element. In either case DOW FILMTEC BW30FR-365 elements can reduce the operating costs in most biofouling cases by lowering membrane fouling, reducing average system operating pressure, and extending membrane life.

Dow inclucdes one coupler part number PV-IN810 (313198) with each element.  Each coupler includes two 3-912 EPR o-rings.

DOW FILMTEC BW30FR-365 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.

Product Specifications     Genuine DOW FilmTec Membrane Element   



Specifications for BW30FR-365

FilmTec Product: BW30FR-365
FilmTec Part Number: 174961
Size (Approximate): 8" Dia. x 40"L
Flow Rate: 9,500 gpd (36 m³/d)
Applied Pressure: 225 psig (15.3 bar)
Stabilized Salt Rejection: 99.5%
Minimum Salt Rejection: 99.0%
Active Surface Area: 365 Sq. Ft.
Single Element Recovery: 15%
End Style: Standard Flush Cut
Exterior: Hard Shell Fiberglass
Feed Spacer: 34 mil
Membrane Type:
Polyamide Thin-Film

Permeate flow and salt rejection based:  2,000 ppm NaCl feed stream, 77°F, 15% recovery, 225 psig.

Operating Limits for BW30FR-365

Maximum Operating Temperature: 113°F (45°C)
Maximum Operating Pressure: 600 psig (41 bar)
Maximum Pressure Drop: 15 psig (1 bar)
Maximum Feed Flow Rate: 70 gpm (19m³/h)
pH Range, Continuous Operation*: 2-11
pH Range, Short-Term Cleaning**: 1-13
Maximum Feed Silt Density Index: SDI 5
Fere Clorine Tolerance***: <0.1ppm

*Maximum temperature for continuous operation above pH 10 is 95°F
**Refer to cleaning guidelines.
***Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow recommends removing residual free chlorine by pretreatment prior to membrane exposure.

Related Products for use with BW30FR-365

PV-IN810 Interconnectors for DOW FilmTec 8" Membrane Elements with 1.125" ID Permeate Port.
AS-135-500 Flocon 135 Antiscalant Scale Inihibitor for Brackish or Seawater Systems Operating at High Recovery
AM-11-25 RO Membrane Cleaning Chemicals - Acid Cleaner to Remove Scale
AM-22-25 RO Membrane Cleaning Chemicals - Alkaline Cleaner to Remove  Organics

Benefits of DOW FilmTec Commercial RO Membranes

  • Decades of proven performance
  • Delivers high quality permeate water while minimizing unit cost
  • Offers the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1-13) tolerance and the support of Dow technical representatives
  • Thick feed spacer minimizes the impact of fouling
  • FilmTec performance and quality

Physical Dimensions of DOW FilmTec BW30FR-365

DOW FilmTec 8-Inch RO Membrane Drawing  
A 40.0 (1,016)
B 1.125 (29)
C 7.9 (201)

BW30FR-365 fits nominal 8" ID pressure vessels.


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