DOW FILMTEC TW30HP-4611 Membrane

Product Description

DOW FILMTEC TW30HP, 4.6-inch diameter reverse osmosis elements offer high quality water for sanitary applications, using the high performance TW30HP membrane which offers excellent permeate flow and salt rejection. These elements are made with the same high quality materials of construction as our larger DOW FILMTEC elements used in municipal and industrial systems. For added convenience during shipping, storage, and loading, these elements are available as either wet or dry products.


  • High flux rates
  • Full-fit design
  • consistent quality from automated rolling
  • Filmtec performance and quality

Important Operating Information

  • Keep elements moist at all times after initial wetting.
  • If operating specifications given in this Product Information bulletin are not strictly followed, the FILMTEC Reverse Osmosis and Nanofiltration Element Three-Year Prorated Limited Warranty (Form No. 609-35010) will be null and void.
  • Permeate obtained from first hour of operation should be discarded.
  • To prevent biological growth during storage, shipping or system shutdowns it is recommended that DOW FILMTEC™ elements be immersed in a protective solution. The standard storage solution contains 1.0 percent (by weight) sodium metabisulfite (food grade).
  • The customer if fully responsible for the effects of incompatible chemicals on elements. Their use will void the FILMTEC Reverse Osmosis and Nanofiltration Element Three-Year Prorated Limited Warranty (Form No. 609-35010).
Product Product Water Flow Rate Applied Pressure psig (bar) Stabilized Salt Rejection Cl- (%)
(gpd) (m3/d) (l/h)
TW30HP-4611 1,200 4.54 189 225 (15.5) 99
Operating Limits
  • Membrane Type Polyamide Thin-Film Composite
  • Maximum Operating Temperature 113°F (45°C)
  • Maximum Operating Pressure 600 psi (4.1 MPa)
  • Maximum Pressure Drop 15 psi (1.0 bar)
  • pH Range, Continuous Operation 2 - 11
  • pH Range, Short-Term Cleaning 1 - 13
  • Maximum Feed Silt Density Index 5
  • Free Chlorine Tolerance < 0.1 ppm
  • Medical applications
  • Sanitary uses
[custom-documents] [/custom-documents]
(3 reviews) Write a Review
  • 5
    You guys are very professional

    Posted by Shane Z. on Apr 14th 2020

    Nothing bad to say about these membranes whatsoever

  • 5
    shipped same delivery, thanks

    Posted by Haley D. on Nov 7th 2019

    After months of using these membrane, I can say they are cutting-edge products!

  • 5

    Posted by Steve I. on Nov 21st 2018

    Will buy these membranes again!

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