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Hydranautics Membranes

Home Membrane Elements for RO, UF, NF, and MF Water Treatment Hydranautics Membranes

Hydranautics Membranes

Hydranautics Membranes

Hydraunautics RO MembranesNitto Hydranautics RO Membranes

Hydranautics is a world-wide supplier of separation membrane technology with a comprehensive list of top-performing filtration products for various industries. We carry a variety of Hydranautics RO membrane products including ESPA  Series Reverse Osmosis Membranes, SWC Series Seawater RO Membranes, and HydraCap Ultrafiltration Membrane Elements. for various applications including boiler feedwater treatment, wastewater treatment, seawater desalination, surface water treatment, drinking water purification, agricultural water treatment, and pharmaceutical water purification.

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4 Items

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  1. 4" x 40" | 2450 GPD | 150 psi | 99.4% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA1-4040)

    ESPA1-LD-4040

    $290.00
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    In Stock for Immediate Shipment.
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  2. 4" x 40" | 2350 GPD | 100 psi | 99.2% Rej. | Hydranautics ESPA Ultra-Low Pressure Membrane (Replaces ESPA4-4040)

    ESPA4-LD-4040

    $290.00
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    Item will ship in 7 days.

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  3. 4" x 40" | 2000 GPD | 150 psi | 99.6% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA2-4040)

    ESPA2-LD-4040

    $290.00
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    Item will ship in 7 days.

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  4. 4"x40" Hydranautics SWC5-LD-4040 Membrane, 1,750 GPD

    SWC5-LD-4040

    $341.33
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    Item will ship in 5 days.

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Hydranautics Membranes Performance Features


Hydraunautics RO membranes consistently meet the increasing demands of the water treatment and purification industry. These thin film membranes offer high productivity, outstanding performance, and deliver high levels of salt rejection. They are designed to accommodate varying levels of seawater salinity with high levels of field performance.

Standard Features

  • High Rejection
  • Sea Water Membranes
  • LFC Membranes for Low Fouling
  • SanRO Membranes for Sanitary or Full Fit

Low Fouling Composite (LFC) Membranes


Hydranautics membranes LFC membranes offer superior membrane technology to lower membrane fouling in waste and surface water and treatments to treat difficult feed and municipal wastewater.

Hydranautics ESPA Tap & Brackish Water Membranes


Hydranautics ESPA membranes are a low energy/ high flow tap and brackish water RO membrane. Designed with energy saving poly amide for reduced feed pressure, the ESPA series of membrane components are suitable for industrial & drinking water supplies where the main driving force for membrane choice is the power consumption. Hydranautics ESPA membranes offer a 99.5 percent rejection of salts. These membrane products are also a great alternative for drinking water systems.

Reliable Water Purification: Hydranautics RO Membranes


Membranes manufactured from Hydranautics provide more than half a billion gallons of freshwater per day for the world's factories and drinking supplies.

At wateranywhere, we know how vital clean, quality water is, which is why we take pride in offering the best RO membrane elements. We offer reliable service and flexibility to best meet our customers’ needs including quick shipping, and affordable installation. Contact us to determine the best Hydranautics RO membranes for your application.