B2B & Volume Sales — Call for Availability: 8″ membrane elements are sold business-to-business, typically by the case or in project quantities. Stock rotates quickly, so please call
+1 (408) 969-2688 or email
Sales@ForeverPure.com to confirm current availability, volume pricing, and lead time.
📄 Download the DuPont Product Datasheet (PDF)
| SKU / Model | NF270-440 |
| Product Type | Nanofiltration Element |
| Membrane Type | Thin-Film Composite (TFC) - Nanofiltration |
| Active Area | 440 ft² (41 m²) |
| Permeate Flow Rate | 15,800 GPD (59.8 m³/d) |
| Stabilized Salt Rejection | > 97% MgSO4 |
| Minimum Salt Rejection | > 95% MgSO4 |
| Feed Spacer Thickness | 28 mil |
| Shipping Weight | ~35 lbs (boxed) |
| Shipping Dimensions | 10" × 44" × 10" (boxed W × L × D) |
| HS Code (Tariff) | 8421.21.0000 — water filtering/purifying apparatus |
| Warranty | 1-Year materials & workmanship; 3-Year prorated performance warranty from DuPont (commercial elements, per DuPont conditions) |
Operating Conditions
| Maximum Operating Pressure | 600 psi (41 bar) |
| Maximum Operating Temperature | 113°F (45°C) |
| Maximum Feed Flow Rate | 75 GPM (17 m³/h) |
| Maximum Pressure Drop | 15 psi (1.0 bar) |
| pH Range, Continuous Operation | 2 – 11 |
| pH Range, Short-Term Cleaning | 1 – 12 |
| Maximum Feed SDI | SDI 5 |
| Free Chlorine Tolerance | < 0.1 ppm |
Dimensions & Weight
| Element Diameter | 7.9 in (201 mm) |
| Element Length | 40.0 in (1,016 mm) |
| Weight (Dry) | 37 lb (17 kg) |
| Weight (Wet) | 44 lb (20 kg) |
Applications
- Municipal drinking water production
- Surface water treatment and softening
- Organic (NOM) removal
- Industrial process water
Key Advantages
- Good organic (NOM) removal
- Partial softening preserves water character
- High flux results in high yields
Test Conditions: 2,000 ppm MgSO4, 70 psi (4.8 bar), 77°F (25°C), pH 8, 15% recovery
Specifications provided by DuPont Water Solutions. Contact ForeverPure for pricing and availability.
Questions? Please contact us
