SKU: 28232539127

8"x40" | 10,500 GPD | 99.5% Rej | 400 ft2 | FilmTec RO Membrane

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Description

8"x40" | 10,500 GPD | 99.5% Rej | 400 ft2 | FilmTec RO MembraneDOW FILMTEC BW30 400 Industrial BWRO Membrane Element DOW FILMTEC BW30 400 elements are the product of choice when high quality permeates are required. It is widely used in new equipment and retrofits where system capital and productivity are factors. DOW FILTMEC BW30 400 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



DOW FILMTEC™ BW30-400 Industrial BWRO Membrane Element


DOW FILMTEC BW30-400 elements are the product of choice when high quality permeates are required. It is widely used in new equipment and retrofits where system capital and productivity are factors. DOW FILTMEC BW30-400 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™ BW30-400 delivers high quality permeate water while minimizing unit cost. DOW FILMTEC BW30-400 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 BW30-400 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.

 

Specifications for BW30-400

FilmTec Product: BW30-400
FilmTec Part Number: 90650
Size (Approximate): 8" Dia. x 40"L
Flow Rate: 10,500 gpd (36 m³/d)
Applied Pressure: 225 psig (15.3 bar)
Stabilized Salt Rejection: 99.5%
Minimum Salt Rejection: 99.0%
Active Surface Area: 400 Sq. Ft.
Single Element Recovery: 15%
End Style: Standard Flush Cut
Exterior: Hard Shell Fiberglass
Feed Spacer: 28 mil
Membrane Type:
 Polyamide Thin-Film
Composite

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

Operating Limits for BW30-400

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 BW30-400

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 BW30-400 Commercial RO Membranes:

  • Industrial Water Demineralization
  • Production of Municipal Water
  • Water Reuse

Physical Dimensions of DOW FilmTec BW30-400

INCHES (MM)
A

40.0 (1,016)
B

1.125 (29)
C

7.9 (201)

BW30-400 fits nominal 8" ID pressure vessels.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 28232539127

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Casandra
Los Angeles, US
★★★★★ 5
goose down pillows.
Color: White, Size: King Size Set of 2
Since receiving them, these king-size white goose down pillows have truly transformed my sleep. They are incredibly soft and fluffy to the touch, so plush it's hard to believe they hold their shape. Sleeping on them is like lying on a cloud. The 100% cotton cover adds extra comfort: it feels cool to the touch, breathes well throughout the night, and helps me maintain a comfortable temperature while I sleep. Furthermore, the "reinforced fiber" structure is noticeable: after several weeks of use, the pillows retain their support; they don't clump or lose their shape, ensuring consistently good rest. I find they have the ideal balance between firmness and softness: firm enough to support my neck and head, yet plush enough to adapt to my posture without creating pressure. This has improved my nights; I sleep more soundly and wake up with less stiffness in my neck. In short: these pillows combine luxury, comfort, and durability. If you're looking to improve your sleep quality with soft, firm, and breathable pillows—especially in king size—these are perfect. Definitely one of the best investments you can make for better sleep.
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Reviewed in the United States on November 30, 2025
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Daemy Calero Ortega
Waukegan, US
★★★★★ 5
Almoada
Color: White, Size: Queen Size Set of 2, Color: White, Size: Queen Size Set of 2
Hotel-like comfort at home I bought these pillows from Beautyrest and they really exceeded my expectations. They are very soft but at the same time have good support, which helps you rest better throughout the night. They feel like luxury hotel pillows, especially because of their down-like filling. The jumbo size is perfect and they come well filled, they are not easily crushed. In addition, the cotton cover feels fresh and of good quality. They arrived quickly and well packed. After using them for several days, they maintain their shape and comfort. I definitely recommend them if you are looking to improve your rest without spending too much.
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Reviewed in the United States on March 20, 2026
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Yanaida Hernandez
Port Orchard, US
★★★★★ 5
Great quality
Color: White, Size: Queen Size Set of 2
★★★★★ Super comfortable and supportive pillows! Great quality, soft but still keeps its shape. I’m sleeping much better now. Highly recommend!
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Reviewed in the United States on May 9, 2026
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Yanira
Charlottesville, US
★★★★★ 5
They aren't super firm; they are more comfortable than rigid 😊
Color: White, Size: King Size Set of 2
I bought these pillows, and honestly, I really liked them. They have a medium firmness that helps significantly with neck pain, yet they remain soft and fluffy without going flat during the night. They hold their shape well and have good loft, so you don't have to keep adjusting them constantly. They don't have any unpleasant odor right out of the package, nor do they slide around much inside the pillowcase something I really appreciate. Overall, they feel comfortable and are of good quality for sleeping in any position.
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Reviewed in the United States on March 26, 2026
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Sahay Moronta Bonet
Pawtucket, US
★★★★★ 5
100% Cotton Pillows .
Color: White, Size: Queen Size Set of 2, Color: White, Size: Queen Size Set of 2
These pillows feel soft and fluffy without being too flat. They provide nice support for the neck and feel comfortable whether sleeping on your side or back. After several nights of use, they still keep their shape well and don’t feel too warm during the night. The set comes with two pillows, which makes it really practical for the bed.
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Reviewed in the United States on May 13, 2026

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