FILMTEC™ Brackish Water Reverse Osmosis 4" Elements

FILMTEC™ Brackish Water Reverse Osmosis 4" Elements can separate salts from water and are produced with an automated fabrication process that ensures precision, consistency, and reliability. They are ideal for use in medium-sized water treatment system that produce less than approximately 10 gpm (2300 L/h) of permeate. Our RO membranes build on a tradition of leadership in the thin-film composite membrane industry and meet the challenges of higher rejection in lower-pressure operations.


FILMTEC™ LC LE-4040 Elements deliver high quality water at low pressure at harsh water conditions, using Dow’s innovative, proprietary technology for low energy commercial applications. Dow’s fully automated element production enables the most consistent products in the industry that minimizes the total cost of ownership of water treatment systems.

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Used In:

  • Commercial water demineralization
  • Industrial water demineralization
  • Production of municipal drinking water
  • Water reuse


  •  High rejection results in excellent water quality
  •  Low energy usage reduces power consumption and costs
  •  Durable with good cleanability for long element life


  • Asia Pacific
  • Europe
  • Latin America
  • North America