FilmTec™ LC LE PRO-4040 is DuPont’s low-energy brackish water reverse osmosis element for commercial and industrial systems producing up to ~10 GPM of permeate. It is the direct replacement for the discontinued DOW FilmTec LC LE-4040, delivering higher rejection (99.5% stabilized) and industry-leading 94 sq.ft. active area at low operating pressure — reducing pump energy and operating cost.
Typical applications: commercial & industrial water demineralization, municipal drinking water production, and water reuse. Fits standard nominal 4" × 40" pressure vessels.
| SKU / Model | LCLE-PRO-4040 |
| Product Type | Brackish Water Reverse Osmosis Membrane Element |
| Replaces | DOW FilmTec LC LE-4040 (discontinued) |
| Permeate Flow | 2,600 GPD (9.85 m³/d) at test conditions |
| Active Membrane Area | 94 sq. ft. |
| Stabilized Salt Rejection | 99.5% (99.0% minimum) |
| Test Conditions | 125 psig, 2,000 ppm NaCl |
| Max Operating Pressure | 600 psig (41 bar) |
| Max Operating Temperature | 113°F (45°C) |
| pH Range | 2–11 continuous; 1–13 short-term cleaning |
| Element Dimensions | 3.9" dia. × 40" L (fits nominal 4" pressure vessels) |
| Membrane / Shell | Polyamide thin-film composite / hard-shell fiberglass |
| Manufacturer | DuPont Water Solutions (FilmTec™) |
| Warranty | 1 Year Limited Warranty |
