FilmTec™ LC LE PRO-4040 Element

FilmTec™ LC LE PRO-4040 is a 4-inch low-energy reverse osmosis membrane element designed to deliver high-quality permeate at lower operating pressure, including under challenging feedwater conditions. DuPont's low-energy commercial membrane technology combines high salt rejection with a large active membrane area to help reduce operating flux and fouling while maintaining strong permeate output.

Key Features

• Designed for high-quality water production at low operating pressure.
• 94 ft² (8.7 m²) active membrane area for lower operating flux and reduced fouling potential.
• High salt rejection under challenging feedwater conditions.
• Wide short-term cleaning pH range of 1–13 for effective cleaning and chemical tolerance.
• Suitable for commercial, light industrial and drinking-water applications requiring stringent permeate quality.

Typical Performance

Performance figures are based on standard test conditions of 2,000 ppm NaCl, 150 psi (10.3 bar), 25°C, pH 8 and 15% recovery. Actual performance will vary with feedwater conditions and system design.

Operating Limits

Dimensions

• Nominal length: 40.0 in (1,016 mm)
• Outer diameter: 3.9 in (99 mm)
• Permeate tube OD: 0.75 in (19 mm)
• Fits nominal 4-inch I.D. pressure vessels

Typical Applications

• Commercial water demineralisation
• Industrial water demineralisation
• Production of municipal drinking water
• Water reuse
• Refilling stations and bottling plants
• Hotels, schools and institutional water systems

Important Operating Notes

• Keep the element moist at all times after initial wetting.
• DuPont recommends removal of residual free chlorine by suitable pretreatment before membrane exposure.
• Discard permeate produced during the first hour of operation.
• Avoid static permeate-side backpressure.
• For prolonged shutdowns, preserve the membrane in a suitable preservative solution.
• Effective cyst and pathogen reduction depends on the complete treatment system, operation and maintenance; the membrane element alone does not guarantee pathogen removal.

Manufacturer: DuPont FilmTec™