Hydranautics CPA-4040E Membrane

Product Description

CPA RO membranes are regarded as the industry standard for all critical high purity applications – from pharmaceutical to power industry.

CPA lines of spiral-wound RO membranes are available in a variety of sizes and deliver unmatched performance with the highest salt rejection rates for brackish water applications. High throughput, efficiency and cost-effectiveness make CPA membranes the best high-rejection brackish water RO membranes in the industry.

Because of its exceptionally high salt rejection, CPA membranes are used in power generation, pharmaceutical, electronics and semiconductor industry.


CPA-4040E Specifications:
  • Permeate Flow: 2,250 gpd (8.5 m3/d)
  • Salt Rejection : 99.5% (99.2% minimum)
  • Feed Spacer: 34 mil (0.864 mm)
  • Configuration: Spiral Wound
  • Membrane Polymer: Composite Polyamide
  • Membrane Active Area: 65 ft2 (6.04 m2)

The stated performance is initial (data taken after 30 minutes of operation), based on the following conditions:

  • 1500 PPM NaCl solution
  • 225 psi (1.55 MPa) Applied Pressure
  • 77 °F (25 °C) Operating Temperature
  • 15% Permeate Recovery
  • 6.5 - 7.0 pH Range



Standard Operating Limits:
  • 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 (1-12)*
  • Maximum Feedwater Turbidity: 1.0 NTU Maximum Feedwater SDI (15 mins): 5.0
  • Maximum Feed Flow: 16 GPM (3.6 m3/h)
  • Maximum Pressure Drop for Each Element: 15 psi
  • Dry Element Temperature Storage -40 °C to 40 °C (-40°F to 104°F)
  • Wet Element Temperature Storage 1 °C to 35 °C (33°F to 95°F)



  • Municipal/Industrial Surface and Wastewaters
  • Difficult Feedwaters Requiring Significant Pretreatment


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(1 review) Write a Review
  • 5
    You have the quantity in stock

    Posted by Roberto C. on Sep 23rd 2019

    We ordered large quantity and you were able to satisfy our need on time. Thanks!

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