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.
| SKU / Model | NF90-400-34i |
| Product Type | Nanofiltration |
| Membrane Type | Polyamide Thin-Film Composite |
| Active Area | 400 sq ft |
| Permeate Flow Rate | 9500 GPD |
| Stabilized Salt Rejection | 97.0 (NaCl) / 99.5 (MgSO4)% |
| Minimum Salt Rejection | 96.5% |
| Feed Spacer Thickness | 34 mil |
| End Cap Type | iLEC™ Interlocking End Caps |
| Shipping Weight | ~44 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 | 16-75 gpm |
| Maximum Pressure Drop | 15 psi (1.0 bar) |
| pH Range, Continuous Operation | 2-11 |
| pH Range, Short-Term Cleaning | 1-13 |
| Maximum Feed SDI | 5 |
| Free Chlorine Tolerance | <0.1 ppm |
Dimensions & Weight
| Element Diameter | 7.9" |
| Element Length | 40" |
| Weight (Dry) | 35 lbs |
| Weight (Wet) | 40 lbs |
Applications
- High rejection nanofiltration
- Softening with high TDS rejection
- Process water treatment
- Pharmaceutical and chemical processing
Key Advantages
- Tight NF membrane with high NaCl rejection
- Excellent divalent ion rejection
- Versatile for demanding NF applications
Test Conditions: Pressure: 70 psi, Recovery: 15%, Feed: 2,000 ppm MgSO4
Specifications provided by DuPont Water Solutions. Contact ForeverPure for pricing and availability.
Questions? Please contact us
