Skip to content

RO Membranes

We can special order from many different suppliers if you cannot find what you are looking for. Please send us an email at info@onlinewaterparts.com and a dedicated account manager will assist you in finding the correct parts for your equipment.
  • Original price $340.00 - Original price $340.00
    Original price
    $340.00
    $340.00 - $340.00
    Current price $340.00

    LCLE4040 - 4" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    4" x 40" Dow Filmtec RO membrane element. Large commercial, Low energy. 2,900 GPD flowrate. 99.5% nominal rejection.

    Original price $340.00 - Original price $340.00
    Original price
    $340.00
    $340.00 - $340.00
    Current price $340.00
  • Original price $320.00 - Original price $320.00
    Original price
    $320.00
    $320.00 - $320.00
    Current price $320.00

    BW30-4040 - 4" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    4" x 40" Dow Filmtec RO membrane element. 2,400 GPD flowrate. 99.5% nominal rejection.

    Original price $320.00 - Original price $320.00
    Original price
    $320.00
    $320.00 - $320.00
    Current price $320.00
  • Original price $323.00 - Original price $323.00
    Original price
    $323.00
    $323.00 - $323.00
    Current price $323.00

    CPA2-4040 - 4" x 40" Reverse Osmosis Membrane Element Hydranautics Membrane

    In stock

    4" x 40" Hydranautics reverse osmosis membrane element. 2,250 GPD flowrate. 99.3% nominal rejection. 225 test pressure.

    Original price $323.00 - Original price $323.00
    Original price
    $323.00
    $323.00 - $323.00
    Current price $323.00
  • Original price $272.00 - Original price $272.00
    Original price
    $272.00
    $272.00 - $272.00
    Current price $272.00

    ESPA1-LD-4040 4" X 40" Reverse Osmosis Membrane Element Hydranautics Membrane

    In stock

    4" X 40" Reverse Osmosis Membrane Element Hydranautics Membrane ESPA1-LD-4040. 2,450 GPD Flow Rate. 98% Nominal Rejection. 150PSI Test Pressure.

    Original price $272.00 - Original price $272.00
    Original price
    $272.00
    $272.00 - $272.00
    Current price $272.00
  • Original price $261.00 - Original price $261.00
    Original price
    $261.00
    $261.00 - $261.00
    Current price $261.00

    BW30-2540 - 8" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    8" x 40" Dow Filmtec RO membrane element. Industrial Grade, High Rejection, Brackish water. 1,000 GPD flowrate. 99.5% nominal rejection. ?ÿ

    Original price $261.00 - Original price $261.00
    Original price
    $261.00
    $261.00 - $261.00
    Current price $261.00
  • Original price $404.00 - Original price $404.00
    Original price
    $404.00
    $404.00 - $404.00
    Current price $404.00

    XLE-4021 - 4" x 21" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    4" x 21" Dow Filmtec RO membrane element. 1,025 GPD flowrate. 99% nominal rejection.

    Original price $404.00 - Original price $404.00
    Original price
    $404.00
    $404.00 - $404.00
    Current price $404.00
  • Original price $350.00 - Original price $350.00
    Original price
    $350.00
    $350.00 - $350.00
    Current price $350.00

    ESPA2-4040 4" X 40" Reverse Osmosis Membrane Element Hydranautics Membrane

    In stock

    4" X 40" Reverse Osmosis Membrane Element Hydranautics Membrane ESPA2-4040. 1,900 GPD Flow Rate. 99.6% Salt Rejection. 150PSI Test Pressure.

    Original price $350.00 - Original price $350.00
    Original price
    $350.00
    $350.00 - $350.00
    Current price $350.00
  • Original price $332.00 - Original price $332.00
    Original price
    $332.00
    $332.00 - $332.00
    Current price $332.00

    LCHR-4040 - 4" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    4" x 40" Dow Filmtec RO membrane element. Large commercial, Low energy. 2,500 GPD flowrate. 99.1% nominal rejection.

    Original price $332.00 - Original price $332.00
    Original price
    $332.00
    $332.00 - $332.00
    Current price $332.00
  • Original price $247.00 - Original price $247.00
    Original price
    $247.00
    $247.00 - $247.00
    Current price $247.00

    RE4040-BE - 4" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    4" x 40" Dow Filmtec RO membrane element. 2,400 GPD flowrate. 99.7% nominal rejection.

    Original price $247.00 - Original price $247.00
    Original price
    $247.00
    $247.00 - $247.00
    Current price $247.00
  • Original price $1,809.00 - Original price $1,809.00
    Original price
    $1,809.00
    $1,809.00 - $1,809.00
    Current price $1,809.00

    RO-390-FF - 8" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    8" x 40" Dow Filmtec RO Membrane element, Full-Fit configuration. 9,000 GPD flowrate. 99.5% nominal rejection.

    Original price $1,809.00 - Original price $1,809.00
    Original price
    $1,809.00
    $1,809.00 - $1,809.00
    Current price $1,809.00
  • Original price $676.00 - Original price $676.00
    Original price
    $676.00
    $676.00 - $676.00
    Current price $676.00

    RO4040-FF - 4" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    4" x 40" Dow Filmtec RO membrane element. Full Fit. 2,400 GPD flowrate. Stabilized Salt Rejection 99.5%.

    Original price $676.00 - Original price $676.00
    Original price
    $676.00
    $676.00 - $676.00
    Current price $676.00
  • Original price $224.00 - Original price $224.00
    Original price
    $224.00
    $224.00 - $224.00
    Current price $224.00

    T2026-200 - 2" x 26" Reverse Osmosis Membrane

    In stock

    2" x 26" TFC RO membrane element. 200 GPD flowrate.

    Original price $224.00 - Original price $224.00
    Original price
    $224.00
    $224.00 - $224.00
    Current price $224.00
  • Original price $251.00 - Original price $251.00
    Original price
    $251.00
    $251.00 - $251.00
    Current price $251.00

    XLE-2521 - 2.5" x 21" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    2.5" x 21" Dow Filmtec RO membrane element.?ÿ365 GPD flowrate. Stabilized Salt Rejection 99.0%

    Original price $251.00 - Original price $251.00
    Original price
    $251.00
    $251.00 - $251.00
    Current price $251.00
  • Original price $404.00 - Original price $404.00
    Original price
    $404.00
    $404.00 - $404.00
    Current price $404.00

    XLE-4040 - 4" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    4" x 40" Dow Filmtec RO membrane element. 2,600 GPD flowrate. Stabilized Salt Rejection 99.0%

    Original price $404.00 - Original price $404.00
    Original price
    $404.00
    $404.00 - $404.00
    Current price $404.00
  • Original price $287.00 - Original price $287.00
    Original price
    $287.00
    $287.00 - $287.00
    Current price $287.00

    ESPA1-4040 4" X 40" Reverse Osmosis Membrane Element Hydranautics Membrane

    In stock

    4" X 40" Reverse Osmosis Membrane Element Hydranautics Membrane ESPA1-4040. 2,600 GPD Flow Rate. 98% Nominal Rejection. 150PSI Test Pressure.

    Original price $287.00 - Original price $287.00
    Original price
    $287.00
    $287.00 - $287.00
    Current price $287.00
  • Original price $746.00 - Original price $746.00
    Original price
    $746.00
    $746.00 - $746.00
    Current price $746.00

    XLE-440 - 8" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    In stock

    8Ÿ?? x 40 Ÿ?� Dow Filmtec RO Membrane element. Extra low energy, High productivity. 14,000 GPD flowrate. 99% nominal rejection.

    Original price $746.00 - Original price $746.00
    Original price
    $746.00
    $746.00 - $746.00
    Current price $746.00
  • Original price $754.00 - Original price $754.00
    Original price
    $754.00
    $754.00 - $754.00
    Current price $754.00

    BW30PRO-365 - 8" x 40" Reverse Osmosis Membrane Element Filmtec Membrane

    26 in stock

    8" x 40" Dow Filmtec RO membrane element. Industrial Grade, High Rejection, Brackish water. 9,500 GPD flowrate. 99.5% nominal rejection. ‹¯¨Limited...

    View full details
    Original price $754.00 - Original price $754.00
    Original price
    $754.00
    $754.00 - $754.00
    Current price $754.00