IWE Reverse Osmosis Membrane

IWE 4021 Brackish Water (BW) Series Membrane – 4″ x 21″

    £199.08 - £165.90 (exc. VAT)


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        ModelActive Membrane Area ft2(m2)Average Permeated Flow GPD (m3/d)Stable Rejection Rate ( %)Minimum Rejection Rate (%)
        IWE-402138(3.5)1000(3.78)99.098.0
        Testing Conditions
        Testing Pressure150psi (1.03Mpa)
        Temperature of Testing Solution25ā„ƒ
        Concentration of Testing Solution (NaCl)1500ppm
        pH Value of Testing Solution7.5
        Recovery Rate of Single Membrane Element15%
        Operation Limits and Conditions
        Max. Working Pressure600psiō€’4.14Mpaō€’‚
        Max. Feed water Flow75gpm(17m3/h) (8040), 16gpm(3.6m3/h) (4040,4021)
        Max. Feed water Temperature45ā„ƒ
        Max. Feed water SDI155
        Residual Chlorine Concentration of Feedwaterō€’•0.1ppm
        pH Range of Feedwater during Continuous Operation3 ō€“—10
        PH Range of Feedwater during Chemical Cleaning2 ō€“—12
        The Max. Pressure Drop of a Single Membrane Element15psi (0.1Mpa)


          Industrial Water Equipments new BW4021 Membranes are specifically designed for the production of pure water for a huge range of industrialĀ applications.

          The main benefits of using Industrial Water Equipments Range of RO membranes are as follows.

          • Best price guarantee
          • Buy from Trusted professional Water Treatment company Industrial Water Equipment ltd whoā€™s tech team will advise you if required.
          • Directly replaces any 4ā€ x 21ā€ RO membranes.
          • Produces less waste water.
          • Always available from UK Stock.
          • Low pressure required.
          • More efficient than other more expensive membranes.
          • Higher flow Capacities.
          • Individually quality tested.
          • Directly replaces Toray, Axaeon, Hydronautics and Dow membranes (plus others).