Skip to content

4" RO Membrane

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 $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 $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 $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 $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