Hydranautics BW CPA3-8040 RO Membrane

Hydranautics brackish water CPA3-8040 RO membranes are regarded as the industry standard for all critical high purity applications. It has 8 inches dia. with 99.7% rejection was an upgrade to the CPA3 reverse osmosis membrane as it is designed with Low Differential Pressure LDTM. Hydranautics CPA3 membranes set the standard for high performance RO membrane elements.


  • Desalting of Well Waters
  • Municipal Drinking Water
  • Power Generation Industry
  • Electronics and Semiconductor Industry


CPA3 is the third generation of CPA high rejection Brackish water RO membranes from Hydranautics. This membrane at 99.7% rejection is an upgrade to the CPA2 with 10% more membrane area (400 square feet). This resulted in reduced capital costs by requiring fewer pressure vessels and less floor space. Hydranautics CPA3 8040 membranes also have a thicker (31 mil) feed spacer that exhibits higher tolerance to feed water suspended solids.

Product Specifications

  • Size: 8″ diameter x 40″ length
  • Permeate Flow: 11,000 gpd (41.6 m3 /d)
  • Salt Rejection: 99.7% (99.6% minimum)
  • Configuration: Spiral Wound
  • Membrane Polymer: Composite Polyamide
  • Membrane Active Area: 400 ft2 (37.1 m2)
  • Feed Spacer: 31 mil (0.787mm)

Application Data

  • Maximum Applied Pressure: 600 psig (4.14 MPa)
  • Maximum Chlorine Concentration: < 0.1 PPM
  • Maximum Operating Temperature: 113 °F (45 °C)
  • pH Range, Continuous (Cleaning): 2-10.8 (1-12.5)*
  • Maximum Feedwater Turbidity: 1.0 NTU
  • Maximum Feedwater SDI (15 mins): 5.0
  • Maximum Feed Flow: 75 GPM (17.0 m3/h)
  • Minimum Ratio of Concentrate to;
    Permeate Flow for any Element: 5:1
    Maximum Pressure Drop for Each Element: 15 psi


The Reverse Osmosis water filtration technology Membrane by Hydranautics (Nitto) is designed for Brackish Water applications that require a psi of 225. Hydranautics (Nitto) is a United States company well known for high-quality Membrane manufacturing for effective Reverse Osmosis water filtration technology.

Hydranautics Brackish Water CPA3-8040 RO Membranes Dubai

Water is vital part of daily life though it does not provide any calories. Water is very essential for all living beings in the Earth. It covers nearly 70% of earth’s surface. Even though the major portion of earth is covered by water, there is severe shortage of drinking water in most of the countries across the world. In these days advanced desalination technologies are applied to the water, including seawater and brackish water, to keep it pure and safe for use. Several industries required pure water to constantly run, as it helps them do their work effectively. It also provides clean safe water for everyone while preventing damage to their equipment due to deposits from hard and saline water.

Hydranautics brackish water CPA3-8040 RO membrane has used most advanced technologies. It has a 99.7% rejection rate, as it filters out impurities from water, thereby yielding an effective result. This is the standard recommendation for every industry that cares for highly purified water.


Hydranautic is a part of the Nitto Global Membrane Division is headquartered in Oceanside, California, USA. Their continuing commitment to research and technology has resulted in the continued development of specialized membrane products.

With the rejection rate of 99.7% and a permeate flow of 11,000 GPD, the Hydranautics CPA3-8040 Brackish Water RO Membrane delivers unmatched performance. It is highly efficient and cost-effective, which makes it the best among other filtration membranes. Hydranautics CPA3-8040 has a Spiral Wound configuration and a Composite Polyamide with a 1500 ppm NaCl solution. It records up to 15% of permeate recovery within 6.5 – 7.0 pH range and a temperature of 25 °C.

CPA3 is known for its high performance since it was introduced and it requires fewer pressure vessels and less floor space. This helps you save space and money, as it produces a higher output than others while still in its compact state. It also has a 31 mil feed spacer that feeds water suspended solids.


The Hydranautics Brackish Water CPA3-8040 RO Membranes can be applied in various industries where required. It is also used to reduce TDS prior to ion exchange and desalt well waters to keep it safe for drinking. Other applications include ultra pure water for semiconductor manufacturing, industrial process water, agricultural irrigation, surface water treatments, and more.

We are the best supplier of Hydranautics RO Membranes in Dubai, available series CPA2, CPA3 and CPA5-LD. We offer high quality Hydranautics CPA3-8040 brackish water RO membranes for various applications in UAE. You can choose one of the products from our online store for your industry include potable water, industrial process water, wastewater treatment, surface water treatment, seawater desalination, residential water, agricultural irrigation, food – beverages and pharmaceuticals.

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