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 | ECO-PRO-440I |
| Product Type | Brackish Water Reverse Osmosis Element |
| Membrane Type | Thin-Film Composite (TFC) - ECO |
| Active Area | 440 ft² (41 m²) |
| Permeate Flow Rate | 12,000 GPD (45.4 m³/d) |
| Stabilized Salt Rejection | 99.7% |
| Minimum Salt Rejection | 99.5% |
| 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 | 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 – 13 |
| 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
- Industrial demineralization (Power Generation, Steel & Metal, Chemical & Petrochemical)
- Boiler feed water treatment
- Cooling tower make-up water
- Municipal drinking water production
- Food & beverage processing water
Key Advantages
- Low energy operation reduces operating costs
- Eco-friendly design with reduced carbon footprint
- Proven FilmTec™ quality and reliability
Test Conditions: 2,000 ppm NaCl, 150 psi (10.3 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
Frequently Asked Questions: Eco PRO-440i — Low-Energy High-Rejection with iLEC
Is the Eco PRO-440i a replacement for an older element?
No — the Eco series launched under the “ECO PRO” name from the start; there is no discontinued non-PRO predecessor. The 440i is the iLEC-endcap version of the Eco PRO-440.
What makes the Eco PRO-440i special?
It delivers 12,650 GPD with 99.7% stabilized / 99.4% minimum rejection at only 150 psi test pressure (2,000 ppm NaCl) — high output at low pressure for significant pump-energy savings, plus excellent silica, boron, nitrate, TOC and ammonium rejection.
What does the “i” mean?
The “i” denotes iLEC™ interlocking end caps: elements lock directly to each other instead of relying on individual couplers and extra O-rings, which reduces O-ring leak points and permeate bypass, and makes vessel loading easier.
Is it a drop-in 8-inch element?
Yes — standard 8″ × 40″ element (1.125″ permeate tube), fits any standard 8-inch pressure vessel, 600 psig maximum operating pressure. No system modifications required.
