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  • SKUM-B4611A
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4.6" x 11"  Reverse Osmosis Membrane | Tap or Brackish Water | 525 GPD RO Membrane

Replacement Membrane for DOW FilmTec TW30HP-4611 for Sanitary Applications

AMI 4.6.x 11 elements are intended to replace DOW FilmTec TW30HP-4611 membrane elements in sanitary applications to produce high quality water from tap or brackish water.  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 an ideal choice for use in small commercial RO systems.  

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

AMI Sanitary Membrane Replacement for TW30HP-4611

Genuine AMI Membranes ISO USA Quality


Specifications for M-B4611A

AMI Part Number: M-B4611A
Membrane Size (Nominal): 4.6 x 11
Membrane Dimensions: 4.61"Dia. x 11.3"L
Product Flow Rate: 1,200 GPD (4.54 m3/d)
Applied Pressure: 225 psi (15.5 bar)
Stabilized Salt Rejection: 99.0%
Outer Wrap: FRP 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: < 0.1 ppm
Feed water pH Range: 2-11
Manufacturer: Applied Membranes, Inc.
Country of Manufacture: United States (USA)
Replaces Membranes:

DOW TW30HP-4611
FilmTec TW30HP-4611
DuPont TW30HP-4611
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
  • Full-Fit Design

Applications for AMI Commercial RO Membranes

  • Medical Applications
  • Sanitary Uses

Commercial RO Membrane Dimensions

Physical Dimensions of M-B4611A:


Total Length (A):

11.32 In. (287.53 mm)

Outer Diameter (B):

4.61 In. (117 mm)

PWT Inner Diameter (C):

0.75 In. (19 mm)


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