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  • Pentair GRO-75EN Thin Layer Composite Residential RO Membrane (4005460)

    • 75 GPD

    The Pentair GRO-75EN (4005460) is a 75 gallon per day encapsulated reverse osmosis (RO) membrane used in many residential and small commercial reverse osmosis systems. It is an exceptionally water-efficient membrane typically offering up to 100% water savings compared to conventional membrane technologies. It accomplishes this while still offering excellent purification performance. It is a “dry packed” membrane to maximize shelf life.


    The GRO-75EN (4005460) can be used both with Pentair GRO Reverse Osmosis systems and with RO systems that use conventional membranes. When using a GRO membrane in a conventional system, be sure to use the product drop-down selector to choose the membrane that ships with the matched drain-line-flow-control. Please see the retro-fit instructions in the resources section of this page to learn how to fit the GRO membrane to your non-GRO RO system.

    Tech Specs
    • 100% Dry Membrane
    • Free chlorine 0.1 ppm
    • pH 4-11
    • Maximum pressure 125 PSI (6.90 bar)
    • Max Temp 120°F (49°C)
    • 75 GPD nominal output
    • Drain flow control not included
    • Permeate check not included





    Max Temp 120°F (49°C)

    75 GPD nominal output

    Drain flow control not included

    Permeate check not included

    In The Box
    • 1 x Pentair GRO-75EN Thin Layer Composite Residential RO Membrane (4005460)
    Additional Resources
    Warranty