SKU: 96583337498

4" x 40" | 2,400 GPD | FRP Wrapped | Commercial Brackish RO Membrane | Applied Membranes

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Description

4" x 40" | 2,400 GPD | FRP Wrapped | Commercial Brackish RO Membrane | Applied Membranes4" x 40" Brackish Water Reverse Osmosis Membrane Fiberglasssed Shell 2,400 GPD BWRO AMI commercial thin film BWRO elements are wrapped in a hard shell of FRP for added strength and to withstand higher pressure drops. AMI commercial brackish water RO membrane elements produce high quality water from tap or brackish water sources in commercial RO systems, and are among the finest in the industry. With hundreds of thousands of membranes in operation in


4" x 40" Brackish Water Reverse Osmosis Membrane | Fiberglasssed Shell | 2,400 GPD BWRO


AMI commercial thin film BWRO elements are wrapped in a hard shell of FRP for added strength and to withstand higher pressure drops. AMI commercial brackish water RO membrane elements produce high quality water from tap or brackish water sources in commercial RO systems, and are among the finest in the industry. With hundreds of thousands of membranes in operation in water filtration systems world-wide, AMI membranes have earned a reputation of delivering consistent, reliable, and long lasting performance, making AMI Membranes the natural choice for use in commercial RO systems. AMI Commercial Brackish Water Reverse Osmosis Membranes are constructed of tap water TFC (thin film composite) membrane material and fit standard PVC and Stainless Steel RO Membrane Housings.

AMI Membranes are 100% Quality and Performance Tested in their ISO 9001:2015 Certified Facilities.

Specifications for M-B4040A

AMI Part Number: M-B4040A
Membrane Size (Nominal): 4 x 40
Membrane Dimensions: 3.9"Dia. x 40"L
Flow Rate: 2,400 GPD (9,084)
Applied Pressure: 225 psi (1.6 MPa)
Stabilized Salt Rejection: 99.5%
Outer Wrap: Fiberglassed Shell
Membrane Type: Tap or Brackish Water
Membrane Sheet: TFC (Thin Film Composite)
Element Type: Spiral Wound
For Housing: Standard 4" x 40"
Feed Water Test Temperature: 77°F (25°C)
Single Element Recovery: 15%
Chlorine Tolerance: 0
Feed water pH Range: 2-11
Manufacturer: Applied Membranes, Inc.
Country of Manufacture: United States (USA)
Can Replace:






DOW FilmTec BW30-4040
DuPont BW30-4040, 80783
GE Desal AG4040FM, AG-90, 411-HF(PA)
CSM RE4040-BN
Toray TM710
Axeon HR3-4040

Note: Performance specifications based on 2,000 mg/l sodium chloride, 225 psi (1.6 MPa) applied pressure, 77ºF (25ºC) feed water temperature, pH 8 and the recovery listed in the table above. Element permeate flow may vary ± 20%.

Features of AMI Brackish Water RO Membranes

  • High Rejection & Flow Rate
  • Hard fiberglass exterior provides added strength and withstands higher pressure drops than tape-wrapped elements.
  • Manufactured in our ISO 9001:2015 Certified Facilities
  • 100% Performance and Quality Tested
  • Backed by our Experienced Technical Support Staff
  • High Quality for Consistent and Reliable Performance
  • Uses the most advanced membrane film technology and manufacturing processes
  • Standard dimensions to fit in commonly available housings

Applications for AMI Commercial BWRO Membranes

  • Restaurants
  • Aquariums
  • Whole House (Residential)
  • Office
  • Institutions
  • Hotels
  • Hospitals
  • Disaster Relief
  • Spot Free Rinse/Car Wash
  • Labs
  • Pharmaceutical
  • Humidification
  • Misting
  • Manufacturing
  • Rinse Water
  • Bottled Water
  • Water stores
  • Beverage
  • Food Processing
  • Ice Makers
  • Commercial Water Treatment
  • Ice Makers
  • Tap Water
  • Brackish Water
  • Wide Variety of Other Applications

Physical Dimensions of M-B4040A:

Total Length (L):

40 In. (101.6 cm)

Membrane Length (I):

38 In. (96 cm)

Diameter (D):

3.9 In. (9.9 cm)

PWT (P):

0.75 In. (1.9 cm)


Replacement Compatibility for AMI 4 X 40 RO MEMBRANES

Applied Membranes M-B4040A FRP wrapped membrane elements can be used as direct replacement for many industry-standard 4x40 size RO elements with 3/4" male product water tubes ("stinger style") which are rated at 225psi. These include:

  • DuPont DOW FilmTec BW30-4040 (80783)
  • GE Desal AG4040FM (1206761), AG4040FF, AG-90 (3056665), 411-HF(PA) (1153192)
  • CSM RE4040-BN
  • Toray TM710
  • Axeon HR3-4040 (200373).

If you do not see your system listed or wish to learn more about compatibility, please contact us. Our certified water treatment experts will be happy to discuss your application. To ensure prompt and accurate information, please include as much information about your system as possible, such as: model, manufacturer, model of membranes being replaced, any available. product manuals or literature associated with your system, and photographs of your system or membranes.

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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 96583337498

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BBS
Alexandria, US
★★★★★ 5
The PERFECT Pillow!
Size: Queen Size
As I grow older, I was waking up with a sore neck. I tried a variety of pillows including feather, fiberfill and memory foam, but Latex was the best by far. Now to find the perfect Latex pillow... First I tried Dunlop Latex but found it too firm. Then I tried 2 different Tatalay Latex. One was soft until my head sunk down, then it became too firm. The second one, this one, was PERFECT. Soft but not too soft, and my head never bottoms out. Feels like my head is floating on air. And no rubber odor. There is a slight scent initially but it isn't unpleasant. I've been sleeping on this pillow for 10 days now and have never slept better. I don't find that it's any warmer than any other pillow. The pillow comes with a nice soft stretchy cotton cover. (I purchased a spare pillow for the future).
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Reviewed in the United States on July 15, 2025
B
Verified Purchase
Brady B.
Charlottesville, US
★★★★★ 4
Very Nice for Back Sleeping but Not the Side
Size: Queen Size
For laying on the back,this pillow is dreamy.Some support,but also very soft.Side sleeping feels different.It's like my face being on a balloon,held there,without much ability to move.
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Reviewed in the United States on April 3, 2025
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Verified Purchase
Cindy S
Whiting, US
★★★★★ 5
Best pillow I have had in all my life!!
Size: Queen Size
This pillow gave me the best sleep that I have had in years! It is perfect in height, softness, and size!!! I would buy this pillow for the rest of my life! It is that good❤️
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Reviewed in the United States on March 15, 2026
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Verified Purchase
Beryl the Bookworm
Fort Morgan, US
★★★★★ 1
Strong latex odor hasn't dissipated in 3 weeks and counting!!
Size: Standard Size
Unusable!!!! Strong latex order hasn't dissipated in 3 weeks and counting! I have put the pillow outside to air each day for weeks and tried multiple types of covers with no abatement. The return window has closed but a, seeking refund for defective product.
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Reviewed in the United States on May 3, 2026
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Verified Purchase
Yanqing Zhu
Boise, US
★★★★★ 5
Comfortable
Size: Queen Size
I was pleasantly surprised by how comfortable this latex pillow is! It provides just the right amount of support without feeling too firm, making it perfect for someone like me who prefers a balanced feel. Unlike memory foam pillows, which can sometimes feel too dense, this one offers a gentle bounce that adjusts to my head and neck naturally. One of the things I appreciate most is how well it maintains its shape throughout the night. No matter how I shift positions, it doesn’t flatten out or lose support. Another bonus is that it stays cool—I haven’t experienced any overheating, which is a common issue with other pillows I’ve tried. There was a faint latex scent when I first unboxed it, but after leaving it out to air for a short while, it completely disappeared. Overall, this pillow is a fantastic option for anyone looking for something supportive yet comfortable, and I’d definitely recommend it to others!
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Reviewed in the United States on February 20, 2025

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