DOW FILMTEC™ Specialty 4" Elements

DOW FILMTEC™ Specialty 4" Elements have been developed through industry-leading research to meet special application requirements such as maple sap concentration, sanitary dairy applications, and heat-sanitizable products for use in medical applications.


DOW FILMTEC™ TW30HP-4641 Elements are 4.6-inch diameter reverse osmosis elements offering 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.

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Used In:

  • Medical applications
  • Sanitary uses


  • High flux rates
  • Full-fit design
  • Consistent quality from automated rolling


  • Asia Pacific
  • Europe
  • Latin America
  • North America