4" x 14" | 525 GPD Commercial Reverse Osmosis RO Membrane | Applied Membranes (Replaces TW30-4014)

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4" x 14"  Reverse Osmosis Membrane | Tap or Brackish Water | 525 GPD RO Membrane

AMI commercial RO membrane elements produce high quality water from tap or brackish water in small 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 small commercial RO systems.  AMI Small Commercial RO 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


Specifications for M-T4014A

AMI Part Number: M-T4014A
Membrane Size (Nominal): 4 x 14
Membrane Dimensions: 3.9"Dia. x 14"L
Flow Rate: 525 GPD (1,987 LPD)
Applied Pressure: 225 psi (1.6 MPa)
Stabilized Salt Rejection: 99.5%
For Housing: Standard 4" x 14"
Outer Wrap: Tape Wrapped
Membrane Type: Tap or Brackish Water
Membrane Sheet: TFC (Thin Film Composite)
Element Type: Spiral Wound
Feed Water Test Temperature: 77°F  (25°C)
Single Element Recovery: 5%
Chlorine Tolerance: 0
Feed water pH Range: 2-11
Can Replace:

DOW FilmTec TW30-4014
DuPont TW30-4014 80605
GE Desal AG4014TM
GE Desal 1206748
GE Desal AG4021TF
Axeon HR3-4014
Manufacturer: Applied Membranes, Inc.
Country of Manufacture: United States (USA)

AMI Membranes Product Specifications

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 Tap Water / Brackish Water RO Membranes

  • High Rejection & Flow Rate
  • 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 RO 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

M-T4014A 4x14 Reverse Osmosis Membranes Dimensions

Physical Dimensions of M-T4014A:


Total Length (L):

14 In. (35.6 cm)

Membrane Length (I):

12 In. (30 cm)

Diameter (D):

3.9 In. (9.9 cm)

PWT (P):

0.75 In. (1.9 cm)


Replacement Compatibility for AMI 4 X 14 RO MEMBRANES

Applied Membranes M-T4014A membrane elements can be used as direct replacement for many industry-standard 4x14 size RO elements with 3/4" male product water tubes ("stinger style") which are rated at 225psi. These include:

  • DOW FilmTec TW30-4014
  • DuPont  FilmTec TW30-4014
  • DOW FilmTec 80605
  • DuPont FilmTec 80605
  • GE Desal AG4014TM
  • GE Desal 1206748
  • GE Desal AG4021TF
  • Axeon HR3-4014

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.