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  • Pentair GRO-36EN Thin Layer Composite Residential RO Membrane (4004423)

    • Produces 36 gallons per day of purified water
    • Works with Pentair GRO systems and conventional RO systems; requires appropriate drain-line-flow-control for retrofitting

    The Pentair GRO-36EN (4004423) is a 36-gallon-per-day encapsulated reverse osmosis (RO) membrane designed for residential and small commercial systems. It offers exceptional water efficiency, achieving up to 100% water savings compared to traditional membranes while maintaining excellent purification performance. Its "dry packed" design maximizes shelf life.Compatible with both Pentair GRO and conventional RO systems, the GRO-36EN requires the appropriate drain-line-flow-control for retrofitting. For installation guidance, refer to the provided retrofit instructions. This innovative membrane employs Thin Layer Composite (TLC) technology, allowing a 1:1 wastewater-to-purified water ratio, significantly reducing waste.

    4004423

    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)
    • 36 GPD nominal output 
    • Drain flow control included 100ml/min
    • Permeate check included
    In the Box
    • 1 x Pentair GRO-36EN Thin Layer Composite Residential RO Membrane (4004423)
    Additional Resources
    Warranty