Lanxess – RO Membrane – Lewabrane RO B440 LE

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The Lewabrane® RO B440 LE elements are spiral wound, composite polyamide membrane elements designed for industrial water treatment applications. The Lewabrane® FR elements are designed to provide more turbulence in the feedwater spacer in combination with the high crosslinked low surface charge Lewabrane membrane. These new RO elements are recommended for brackish and low salinity feedwaters that are expected to have higher biological and organic fouling tendencies.


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Manufacturer Lanxess
Series Lewabrane
Model Number RO B440 LE
Part Number RO B440 LE
Description Feed spacer thickness = 28mil (0.7 mm)
Membrane area = 440 ft2 (40.9 m2)
Salt rejection, av. = 99.5 %
Salt rejection, min. = 99.0 %
Permeate flow rate, av. = 10100 gpd (38.3 m3/d)
Permeate flow rate, min.= 8100 gpd (30.6 m3/d)

Key Features Operating pressure, max. = 600 psi (41 bar)
Operating temperature, max. = 113 °F (45 °C)
Feed water SDI, max. = 5
pH range during operating = 2-11
pH range during cleaning = 1-12
Pressure drop per element, max. = 15 psi (1.0 bar)
Pressure drop per vessel, max. = 50 psi (3.5 bar)
Chlorine concentration, max. = 0.1 ppm
Overall Length 40" (1016mm)

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