4 Inch Reverse Osmosis Membranes

  • We supply 4 inch membranes in a wide variety of types to suit most applications including brackish water, seawater, low pressure and ultra low pressure RO membranes. 4040 4×40 RO membranes and 4021 4×21 reverse osmosis membranes.
  • 4″ commercial RO membrane elements produce high quality water from tap, brackish water or seawater.
  • 4 inch industrial reverse osmosis membrane acts as a barrier to all salts and inorganic molecules, as well as organic molecules.

4 Inch Brackish Water Reverse Osmosis Membranes

Our brackish water 4040 4×40 inch RO Membranes provide high product water flows and salt rejection at high salinity inlet water (up to 8,000 ppm NaCl Salinity).
Brackish water RO Membranes are the best balance of flow and salt rejection.
Working pressure between 200 and 260 PSI (13.7 – 18 bar).

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Low Pressure Reverse Osmosis 4 Inch Membranes

4″ Low Energy (LE type) and Low Pressure (LP) membrane elements are recommended for low-moderate salinity applications or/and in applications where low energy consumption is an important consideration.

Low pressure LP or ultra low pressure ULP membrane elements are based on 150 PSI (10.3 bar) test working pressure, please check each membrane details below

Size: 4×40 and 4/21 inch RO membranes.

 

4 inch Ultra Low Pressure Reverse Osmosis Membranes (4″ Extreme Low Pressure)

They are designed for low salinity water to operate at ultra low pressure (ULP). The high permeability results in up to 40% lower energy consumption compared to standard elements.

These membrane elements are based around 100-110 PSI (around 7 bar) test working pressure, please check each membrane details below

Seawater Desalination 4 Inch RO Membranes

  • Used for Seawater desalination systems.
  • Marine and Maritime watermakers.
  • Yacht and boat desalination units.

Competitive Reverse Osmosis Membranes Comparison Guide
Dow Filmtec / GE Desal / Hydranautics / Tory / CSM

Lanxess Dow Filmtec  GE Desal  Hydranautics  Toray  CSM
Lewabrane
B085 HF 4040
Dow Filmetc
BW30-4040
GE Desal
AG4040FF
Hydranautics
CPA2-4040
Toray
TM710
CSM
RE4040-BE
Lewabrane
B085 LE 4040
Dow Filmetc
LE-4040
  Hydranautics
ESPA2-LD-4040
  CSM
RE4040-BLN
Lewabrane
B085 FR 4040
    Hydranautics
LFC3-LD-4040
Toray
TML10D
 
Lewabrane
S085 HR 4040
Dow Filmetc
SW30-4040
GE Desal
SE4040FF
Hydranautics
SWC1-4040
Toray
TM-810L
CSM
RE4040-SHA
Lewabrane
B400 HF
Dow Filmetc
BW30-400
GE Desal
AG8040F400
Hydranautics
CPA3
Toray
TM720-400
CSM
RE8040-BE
Lewabrane
B400 HR
Dow Filmetc
BW30-400
  Hydranautics
CPA5-LD
   
Lewabrane
B400 FR
Dow Filmetc
BW30-400FR
  Hydranautics
LFC3-LD-8040
Toray
TML20D-400
CSM
RE8040-FEn34
Lewabrane
B400 LE
Dow Filmetc
LE-400
GE Desal
AK8040F
Hydranautics
ESPA
Toray
TM820H-370
CSM
RE8040-BL
Lewabrane
S400 HR
Dow Filmetc
SW30HRLE–400
  Hydranautics
SWC3
Toray
TM820H-400
CSM
RE8040-SH
Lanxess Dow Filmtec GE / Desal Hydranautics Toray CSM

PS: this chart is a general guide only, please email us to source membranes for you or offer an alternative that is currently stocked

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