SKU: 81112006452

4" x 40" | 2,900 GPD at 150 PSI | FRP Wrapped | Low Energy Commercial RO Membrane | Applied Membranes

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Description

4" x 40" | 2,900 GPD at 150 PSI | FRP Wrapped | Low Energy Commercial RO Membrane | Applied Membranes4" x 40" Low Energy Brackish Water RO Membrane Fiberglasssed Shell 2900 GPD BWRO LE AMI Low Energy (Low Pressure) RO Membrane elements are specially designed to run at 150 psi while producing the same product flow as standard elements. By using these elements in your commercial reverse osmosis system, you can significantly reduce your operating costs in tap water applications. AM LE BWRO elements are wrapped in a hard shell of FRP for added strength


4" x 40" Low Energy Brackish Water RO Membrane | Fiberglasssed Shell | 2900 GPD BWRO LE

AMI Low Energy (Low Pressure) RO Membrane elements are specially designed to run at 150 psi while producing the same product flow as standard elements. By using these elements in your commercial reverse osmosis system, you can significantly reduce your operating costs in tap water applications. AM LE BWRO elements are wrapped in a hard shell of FRP for added strength and to withstand higher pressure drops.

AMI low energy 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 LE 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.

M-B4040ALE Specifications

AMI Part Number: M-B4040ALE
Membrane Size (Nominal): 4 x 40
Membrane Dimensions: 3.9"Dia. x 40"L
Flow Rate: 2,900 GPD (10,976 LPD)
Applied Pressure: 150 psi (1 MPa)
Stabilized Salt Rejection: 99%
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:



 DuPont DOW FilmTec BW30LE-4040, LC LE-4040
GE Desal AK4040FM
CSM RE4040-FL

Note: Performance specifications based on 2,000 mg/l sodium chloride, 150 psi (1 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

  • Reduce operating costs and wear and tear on your system by running your system at a lower pressure.
  • 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-B4040ALE:

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 cmm)

Replacement Compatibility for AMI 4 X 40 LE RO MEMBRANES

Applied Membranes M-T4040ALE low energy membrane elements can be used as direct replacement for many industry-standard 4x40 size low pressure RO elements with 3/4" male product water tubes ("stinger style") which are rated at 225psi. These include:

  • DuPont DOW FilmTec BW30LE-4040, 80604
  • DuPont DOW FilmTec LC LE-4040, 356603, 356602
  • GE Desal AK4040FM, 120813, AK4040FF
  • CSM RE4040-FL

If you do not see your membrane 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: 81112006452

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4.7 ★★★★★
Based on 26 reviews
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Verified Purchase
Mark C.
New York, US
★★★★★ 5
Comfy, thick, bottoms slick enough to wipe clean easily
Color: Long Black, Size: 10-13
Comfy, thick, bottoms easy to wipe clean . Would buy again. A little hot if anything.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 17, 2025
T
Verified Purchase
Timmer
Pawtucket, US
★★★★★ 5
Perfect to where around the house
Color: Long Navy, Size: 7-9.5
They worked perfectly. They fit very well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2025
A
Verified Purchase
avalancheryder
Draper, US
★★★★★ 5
Absolute game changer for chronically dry feet/cracked heels
Size: S (up to size 7)-Beige
I had recently bought a pair of silicone heel/ankle wraps to fill out my boot a little since I noticed my heels were lifting when I was skating. I tested them out around the house and noticed they left my heels softer while the rest of my sockless feet got quite dry. So I got these full foot silicone socks to see the effect of having my whole foot covered. I slather the entirety of my feet with Dr. Scholl's Severe Cracked Heel Restoring Balm (love how convenient it is to apply it to my feet with the solid stick form) and then slip them into these silicone socks. After just a couple hours, when I pull out my feet they're (a teeny bit sweaty at first), but then overall soft and smooth and have absorbed the balm fully leaving barely any residue in the silicone sock. I find these silicone socks generally comfortable; I wear them in the evenings while relaxing on the couch, take them off after a couple hours and let my feet breathe a bit, and then reapply my balm and socks and wear them to bed. If I wake up in the middle of the night, which I almost always do (not because of the socks), I'll take the socks off and allow my feet to breathe again. I wear a woman's size 6 shoe and the small size is pretty comfortable. However, I made the mistake of wearing them while being on my feet for a couple hours straight during household chores -- they must've somehow cut off my circulation a bit with the standing, so I wouldn't recommend wearing these silicone socks while being active. And since they're not exactly my foot size, they slide around sometimes and will start to feel tight at my big toe. But if that happens, I just tug on the toe area of the sock to give my big toe more wiggle room and problem solved. Prior to wearing these socks, I was soaking and doing heavy duty exfoliation of my feet every week. These socks seem like they'll work to help me extend the time between soakings and exfoliations. The 5 pack is a great value. So far none have torn, so they seem rather durable. Not sure what I could even do to tear a hole in these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
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Verified Purchase
Beverly Durham
Massapequa, US
★★★★★ 5
Works wonders
Size: M (up to size 9)-Beige
Works wonders for dry feet, like really dry, hard feet.
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Reviewed in the United States on February 23, 2026
T
Verified Purchase
Therapy by the Sea
Lexington, US
★★★★★ 4
EXCELLENT FEET MOISTURE PROTECTION
Size: S (up to size 7)-Beige, Size: S (up to size 7)-Beige
Why did you pick this product vs others?: I have burns on my feet and needed something that I could put burn creme on and still walk around in with. I tried other silicone footsie but they would teae really easily. So far these are doing really well for this purpose. They are holding their shape too. The only caution I have is the same with all silicone footsies: They can be slippery on wet floors, so also wear with socks over them. The biggest issues is when they say a size they mean it. The silicone used in these have little give in them, so they won't stretch out and loose their shape. That can be a good thing, or not so good, depending on how well they fit your feet and what your intent is with wearing these. The other issue is if they fit snug around those toes, that tends to be where the first tear in the material will happen. Because of how these are made, the tear is actually more like cracking in the material and once it occurs you won't be able to get much use out of the sock after that. If you are planning to wear them around the house or for long term use, I suggest going up a size or look for the toeless options.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2025

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