DuPont
NF90-4040 Dupont FilmTec™ Nanofiltration 2,000 GPD at 70 PSI 4 x 40 inch Membranes
NF90-4040 Dupont FilmTec™ Nanofiltration 2,000 GPD at 70 PSI 4 x 40 inch Membranes
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NF90-4040 Dupont FilmTec™ Nanofiltration 2,000 GPD at 70 PSI 4 x 40 inch Membranes
DuPont FilmTec NF90-4040 Nanofiltration Membrane
The DuPont FilmTec NF90-4040 is an industry-leading nanofiltration (NF) membrane engineered specifically to deliver high productivity and exceptional removal of both salts and organic compounds at low operating pressures. Utilizing advanced polyamide thin-film composite technology, this 4-inch element is widely utilized in commercial water treatment, municipal drinking water systems, and industrial processing. It excels in applications requiring the removal of hardness minerals (calcium and magnesium), nitrates, iron, and trace organics such as pesticides and herbicides, making it a highly versatile solution for groundwater and surface water purification.
Designed for superior energy efficiency, the NF90-4040 operates effectively at a standard test pressure of just 70 PSI. This drastically reduces the energy demands on system booster pumps when compared to standard reverse osmosis elements, significantly lowering overall facility operating costs. Under standard test conditions, this high-flux element produces a robust nominal permeate flow rate of 2,000 gallons per day (GPD) while maintaining a stabilized salt rejection rate of 97.0% for magnesium sulfate (MgSO4). By providing an optimal balance of high throughput and precise separation, it ensures continuous, high-purity water production for critical commercial applications without the high energy overhead of traditional RO systems.
| Specification | Details |
| Model Number | NF90-4040 |
| Manufacturer | DuPont Water Solutions (FilmTec) |
| Membrane Type | Nanofiltration (Polyamide TFC) |
| Nominal Size | 4.0" x 40" |
| Permeate Flow Rate | 2,000 GPD (7.6 m³/d) |
| Stabilized Salt Rejection | 97.0% (MgSO4) / 85-95% (NaCl) |
| Active Surface Area | 82 ft² (7.6 m²) |
| Max Operating Pressure | 600 PSI (41 bar) |
| Test PSI (Applied Pressure) | 70 PSI (4.8 bar) |
| Max Operating Temp | 113°F (45°C) |
| Chlorine Exposure Limit | < 0.1 ppm |
| Test Conditions | 2,000 ppm MgSO4, 70 PSI, 77°F (25°C), pH 8.0, 15% Recovery |
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