8"x40" | 9,500 GPD | 99.5% Rej | 365ft2 | FilmTec RO Membrane

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Price $719.39
More Information
Price $719.39
Brand DOW Filmtec

DOW FilmTec Membrane Elements

DOW FILMTEC™  BW30-365 Brackish Water Reverse Osmosis 8" Element

DOW FILTMEC BW30-365 Element is ideal for reverse osmosis plant managers and operators dealing with challenging water and seeking consistent, high performance and long element life. With decades of proven performance, DOW FILMTEC™ BW30-365 delivers high quality permeate water while minimizing unit cost. DOW FILMTEC BW30-365 also 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.

DOW FILMTEC Brackish 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.

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

DOW FILMTEC BW30-365 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.

Product Specifications


FilmTec Membranes are FDA Compliant     Genuine DOW FilmTec Membrane Element   



Specifications for BW30-365

FilmTec Product: BW30-365
FilmTec Part Number: 80773
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 BW30-365

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: 85 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 BW30-365

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

Common Applications for FilmTec BW30-365 Commercial RO Membranes:

  • Industrial Water Demineralization
  • Production of Municipal Water

Physical Dimensions of DOW FilmTec BW30-365

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

BW30-365 fits nominal 8" ID pressure vessels.

For more information, please visit this products webpage.