DOW FILMTEC TW30HP-4641 Membrane

Quality parts at an exceptional value
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-4641 5,200 19.68 820 225 (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
    Best material

    Posted by Matthew B. on Apr 14th 2020


  • 5
    High quality housing

    Posted by Jose G. on Nov 7th 2019

    Fansastic set of membranes

  • 5
    Best filter housing

    Posted by John E. on Nov 21st 2018

    Amazing filtration capabilities!

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