Compliance & Document Hub
- USA FDA Food Additive Status: Complies with the U.S. Food, Drug and Cosmetic Act under Food Additive Regulation 21 CFR § 177.2550 for processing liquid food and purifying water for food manufacturing.
- Potable Water Contact Compliance: Element parts or materials in contact with potable water are compliant to 21 CFR § 170 to 199.
Executive Product Summary
The DuPont FilmTec™ Eco Pro-440i Element represents a highly advanced solution for industrial reverse osmosis operations, engineered specifically for high-rejection and low-energy brackish water purification. As a premium reverse osmosis membrane, this 8-inch element leverages state-of-the-art polyamide thin-film composite technology to deliver an exceptional active membrane area of 440 square feet (41 square meters). By maximizing the active surface area alongside a precision-engineered 28-mil feed spacer, the Eco Pro-440i facilitates a remarkably high permeate flow rate of 12,650 gallons per day (48 cubic meters per day) while maintaining an industry-leading stabilized salt rejection rate of 99.7%. This optimal balance of high productivity and stringent solute rejection makes the element perfectly suited for processing complex feedwater profiles that demand the efficient removal of targeted contaminants such as silica, boron, nitrate, total organic carbon (TOC), and ammonium.
Engineered explicitly to reduce the total cost of ownership (TCO) and minimize overall system operating expenses, the Eco Pro-440i element achieves extraordinary salt rejection at significantly lower operating pressures compared to traditional high-rejection membrane modules. Evaluated at a standard test pressure of just 150 psi (10.3 bar), this low-energy capability translates directly into reduced pump electrical consumption, yielding substantial operational expenditure (OPEX) savings over the lifecycle of the reverse osmosis plant. Furthermore, the membrane's structural integrity and advanced chemical tolerance ensure unmatched robustness during rigorous clean-in-place (CIP) protocols. The element supports an exceptionally wide short-term cleaning pH range of 1 to 13, empowering operators to deploy highly aggressive chemical formulations to effectively remediate biological fouling, organic scaling, and complex mineral deposition without compromising the sensitive polyamide separation layer.
Operational boundaries for the Eco Pro-440i dictate a maximum operating temperature of 113°F (45°C) and a maximum operating pressure of 600 psi (41 bar). Operators must note that continuous operation at a pH above 10 limits the maximum allowable temperature to 95°F (35°C). A crucial mechanical advantage denoted by the 'i' in the model designation is the integration of DuPont's proprietary iLEC™ (Interlocking Endcaps) technology. This precision coupling mechanism minimizes internal pressure drop and significantly mitigates the risk of O-ring leaks—a common vulnerability in traditional array configurations—thereby ensuring consistent, high-purity permeate quality. Additionally, the element exhibits a strict free chlorine tolerance of < 0.1 ppm, making effective upstream dechlorination pretreatment an absolute operational necessity to prevent irreversible oxidative damage to the thin-film composite.
Applications & Industry Use-Cases
- Industrial Utility Water Processing: The element serves as a fundamental barrier in critical industrial utility water loops, utilizing its 99.7% stabilized salt rejection to drastically reduce total dissolved solids (TDS) and mitigate damaging scale formation in sensitive downstream heat exchangers and automated process equipment.
- Boiler Feedwater Pretreatment: Attaining optimal boiler chemistry requires the aggressive removal of silica and hardness. The Eco Pro-440i delivers superior silica and TOC rejection, which directly minimizes boiler blowdown frequency, enhances thermal efficiency, and protects high-pressure steam turbines from catastrophic silica deposition.
- Cooling Tower Make-Up Water: For heavy industrial thermal management, the element's 12,650 gpd permeate flow rate provides an abundant supply of low-salinity make-up water. This allows facility operators to safely increase the cycles of concentration achievable within the cooling tower, driving massive raw water conservation.
- Food & Beverage Manufacturing: Fully documented and verified for USA FDA Food Additive Status compliance (21 CFR § 177.2550), this element is legally cleared for processing liquid food streams and purifying critical process water inside regulated food manufacturing facilities, guaranteeing strict hygienic and regulatory compliance.
- Municipal Water Purification Facilities: The highly durable polyamide thin-film composite structure allows municipal treatment authorities to confidently purify challenging brackish groundwater. Its low-energy operation (tested efficiently at 150 psi) helps municipal districts slash massive electrical overheads while safely achieving high-volume potable water production.
- Industrial Demineralization Arrays: Deployed as the robust primary workhorse in large-scale industrial demineralization systems, the membrane aggressively pretreats feedwater before it enters mixed-bed ion exchange (IX) or electrodeionization (EDI) polishers, thereby drastically extending resin run times and reducing expensive chemical regenerant consumption.
Cross-Compatibility & System Integration
The DuPont FilmTec™ Eco Pro-440i is meticulously engineered to integrate flawlessly into standard 8-inch industrial pressure vessels utilized across the global water treatment sector. Measuring an external diameter of 7.9 inches (201 mm) and an installed connected net length of 40.0 inches (1,016 mm), this component functions as a direct, drop-in replacement for existing 8-inch brackish water reverse osmosis arrays. Plant engineers looking to upgrade from older standard-rejection or high-energy-consumption membranes can seamlessly retrofit their pressure vessels with the Eco Pro-440i without necessitating any structural modifications to the RO skid. Unconnected, individual elements feature a total overall length of 40.5 inches (1,029 mm) to account for the projecting connection interfaces, while the internal permeate tube diameter is precisely 1.125 inches (29 mm), ensuring strict compatibility with standardized permeate collection headers.
The defining integration feature of this specific model variant is the inclusion of iLEC™ (Interlocking Endcaps). Unlike legacy flat-faced end caps that rely completely on separate sliding couplers and external O-rings to bridge the permeate flow between adjacent elements, the iLEC™ system physically and securely locks the elements together. This proprietary connection mechanically compresses the internal seals, fundamentally eliminating the risk of rolled O-rings or seal bypass that commonly causes undetected permeate contamination. For precise installation, the membrane is shipped equipped with an integral U-Cup brine seal to enforce the correct directional feed flow through the rugged fiberglass outer wrap.
When configuring this element within multi-stage reverse osmosis systems, system integrators must rigidly adhere to the specified pressure drop limits: 15 psi (1.0 bar) per individual element and a maximum of 50 psi (3.5 bar) per pressure vessel containing a minimum of four elements. It is equally critical to observe volumetric feed limits, capping the maximum allowable feed flow at 75 gpm (17 m³/h). Furthermore, system operators must ensure that comprehensive pretreatment protocols—such as carbon filtration beds or automated sodium bisulfite dosing systems—are fully operational to maintain a strict free chlorine concentration of < 0.1 ppm. By respecting these standardized dimensional and operational parameters, the Eco Pro-440i provides a highly reliable, incredibly efficient, and leak-resistant upgrade for heavy industrial membrane fleets.
Frequently Asked Questions
Q: What is the exact permeate flow rate of the DuPont FilmTec™ Eco Pro-440i?
Under standardized test conditions (2,000 ppm NaCl, 150 psi, 77°F, pH 8, and 15% recovery), the Eco Pro-440i yields a highly productive permeate flow rate of 12,650 gallons per day (48 cubic meters per day).
Q: Is the DuPont FilmTec™ Eco Pro-440i legally compliant for food processing applications?
Yes. When used unmodified and in accordance with good manufacturing practices, this membrane complies fully with the U.S. FDA Food Additive Regulation 21 CFR § 177.2550 for processing liquid food and purifying process water in food manufacturing operations.
Q: What are the absolute maximum operating pressure and temperature limits for this element?
The absolute maximum operating pressure is 600 psi (41 bar). The highest permitted continuous operating temperature is 113°F (45°C), provided the feedwater pH remains at or below 10. For continuous operation above a pH of 10, the maximum temperature must not exceed 95°F (35°C).
Q: What are the physical dimensions of the Eco Pro-440i, and will it fit my existing vessels?
The element features an outer diameter of 7.9 inches (201 mm) and is designed specifically to fit standard 8-inch industrial pressure vessels. Its net installed length when connected is exactly 40.0 inches (1,016 mm), and the inner diameter of the permeate tube is 1.125 inches (29 mm).
Q: What specific advantage do the iLEC™ interlocking end caps provide over standard caps?
The iLEC™ interlocking end caps create a secure mechanical connection between arrayed elements inside the pressure vessel. This intelligent design dramatically reduces system operating costs, optimizes hydraulic efficiency, and effectively eliminates the risk of O-ring leaks that compromise permeate water purity.
Q: Where can I buy the DuPont FilmTec™ Eco Pro-440i in bulk quantities?
You can procure the DuPont FilmTec™ Eco Pro-440i in high volumes directly through Growthbet LTD. Contact our technical procurement team at sales@growthbet.net to request a formal sourcing brief and a competitive DDP landed-cost quotation.
Source This Product From Growthbet LTD
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