FILMTEC LE-440i

The FILMTEC™ LE-440i element is a low-energy element featuring the highest active membrane area in the industry. It enables high productivity and low energy operation, while maintaining high-rejection performance, minimizing operating expense and lowering the total cost of water for industrial and municipal applications.

  • Delivers the same permeate flow at an equivalent operating flux at 40% lower feed pressure, compared to the FILMTEC BW30-440i element.
  • Offers permeate flow rate 10 percent higher while producing similar permeate quality than that of the FILMTEC LE-400 element, enabling the lowest total cost of water in high-purity industrial applications.
  • Includes iLEC™ interlocking endcaps, which reduce system operating costs and the risk of o-ring leaks that cause poor water quality.
  • Designed using an industry standard 1.125 inch ID permeate tube for interchangeability with other brackish water elements.
Product Name Nominal Active Surface Area
ft2 (m2)		 Permeate Flow Rate
gpd (m3/d)		 Stabilized Salt Rejection
(%)		 Minimum Salt Rejection
(%)
FILMTEC LE-440i 440 (41) 12,650 (48) 99.3 99.0
1. Permeate flow and salt rejection based on the following test conditions: 2000 ppm NaCl, 150 psi (10.3 bar), 77°F (25°C), pH 8, and 15% recovery.
2. For comparison, the LE-440i will have a permeate flow of 13,400 gpd (51 m3/d) and stabilized salt rejection of 99.3% when normalized to a feed solution of 1500 ppm NaCl as used by some manufacturers.
3. Flow rates for individual elements may vary but will be no more than 15% below the value shown.
4. Sales specifications may vary as design revisions take place.
5. Active area guaranteed +/-3%. Active area as stated by FilmTec is not comparable to nominal membrane area often stated by some manufacturers. Measurement method described in Form No. 609-00434 (4223KB PDF).




These membranes may be subject to drinking water application restrictions in some countries: please check the application status before use and sale.


®™* Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
Related Links
Datasheet – English (78KB PDF)
Datasheet – 中文 (257KB PDF)
Datasheet – Français (72KB PDF)

Case History 1 – English (327KB PDF)
Case History 2 – English (498KB PDF)
Case History 3 – English (212KB PDF)