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4" x 40" | 2,860 GPD at 100 PSI | FRP Wrapped | Extra-Low Energy Commercial RO Membrane | Applied Membranes

Price $279.99
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Nominal Size 4" x 40"

4" x 40"  Extra-Low Energy Brackish Water RO Membrane | Fiberglasssed Shell | 2,860 GPD BWRO XLE

Applied Membranes XLE Extra-Low Energy (Ultra-Low Pressure) RO Membrane elements are specially designed to run at 100 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. AMI XLE BWRO elements are wrapped in a hard shell of FRP for added strength and to withstand higher pressure drops.   

AMI extra-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 XLE 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 Made in the USA in their ISO 9001:2015 Certified Facility and are 100% Quality and Performance Tested.

Genuine AMI Membranes ISO USA Quality


M-B4040AXLE Specifications

AMI Part Number: M-B4040AXLE
Membrane Size (Nominal): 4 x 40
Membrane Dimensions: 3.9"Dia. x 40"L
Flow Rate: 2,860 GPD (10,825 LPD)
Applied Pressure: 100 psi (0.7 MPa)
Stabilized Salt Rejection: 99%
Outer Wrap: Fiberglassed Shell
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: CSM RE4040-BLF

AMI Membranes Product Specifications

Note: Performance specifications based on 500 mg/l sodium chloride, 100 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.
  • Made in the USA
  • 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

40 x 40 BWRO Fiberglass FRP Shell Membrane Element Commercial

Physical Dimensions of M-B4040AXLE:


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 XLE RO MEMBRANES

Applied Membranes M-B4040AXLE FRP wrapped extra-low-energy membrane elements can be used as direct replacement for many industry-standard ultralow pressure 4x40 size RO elements with 3/4" male product water tubes ("stinger style") which are rated at 100psi - including CSM RE4040-BLF.

If you 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.