Compliance & Document Hub
- Compliant with 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.
- Element parts and materials in direct contact with potable water comply with 21 CFR § 170 to 199.
- Membrane fabrication utilizes automated precision processes ensuring highly consistent industrial compliance.
Executive Product Summary
The DuPont FilmTec Eco Pro-400i is an advanced, high-rejection, low-energy reverse osmosis membrane element engineered specifically for the most demanding industrial and municipal water treatment facilities. Serving as the primary filtration barrier in complex aqueous separation processes, this eight-inch component leverages proprietary polyamide thin-film composite chemistry to strike an unprecedented balance between massive permeate production and critical salt rejection. Operating at an exceptionally low standard test pressure of 150 psi (10.3 bar), the Eco Pro-400i achieves a continuous permeate flow rate of 11,500 gallons per day (43.5 cubic meters per day) alongside a stabilized salt rejection rate of 99.7 percent. This precisely optimized hydraulic profile directly addresses systemic capital expenditure (CAPEX) and operational expenditure (OPEX) constraints by fundamentally reducing the electrical energy requirements of high-pressure feed pumps, thereby driving down the total cost of ownership for large-scale operations.
A core engineering advantage of the Eco Pro-400i is the integration of a 34-mil Low Differential Pressure (LDP) feed spacer. In standard reverse osmosis deployments, narrow feed channels often lead to accelerated colloidal and biological fouling. The broader 34-mil spacer geometry drastically reduces the differential pressure across the element—limiting it to a maximum of 15 psi (1.0 bar)—while increasing localized shear velocity. This robust internal architecture inherently resists particulate accumulation, significantly prolonging the intervals between necessary chemical cleanings and safeguarding the 400 square feet (37 square meters) of active membrane surface. Concurrently, the advanced thin-film chemistry explicitly targets low-molecular-weight contaminants, delivering industry-leading rejection characteristics for silica, boron, nitrate, total organic carbon (TOC), and ammonium.
Operating parameters for this module reflect its industrial-grade construction. The membrane safely withstands thermal loads up to 113°F (45°C) and peak operational pressures reaching 600 psi (41 bar). Crucially, the component boasts an expansive chemical tolerance, supporting continuous operation between pH 2 and 11, and brief 30-minute cleaning cycles at aggressive pH levels spanning 1 to 13. This allows plant engineers to execute rigorous Clean-In-Place (CIP) protocols to effectively dissolve persistent biological and mineral scaling. Furthermore, mechanical reliability is amplified by DuPont's iLEC (Interlocking End Cap) technology. This proprietary design physically couples adjacent elements within the pressure vessel, eliminating the reliance on traditional sliding inter-connector o-rings. This mechanism averts parasitic pressure leaks, mitigates the risk of catastrophic o-ring extrusion during system start-ups, and guarantees supreme permeate purity.
Applications & Industry Use-Cases
- Industrial Utility Water Treatment: Plant managers utilize this element's massive 11,500 gpd permeate yield at just 150 psi applied pressure to drastically lower the electrical OPEX associated with high-volume plant utility water generation.
- Boiler Feedwater Processing: The membrane's specialized polyamide structure provides exceptional rejection of silica and dissolved TOC, preventing catastrophic scaling on high-pressure steam boiler tubes and power generation turbine blades.
- Cooling Tower Blowdown Recovery: With a broad continuous operating pH range of 2 to 11 and resistance to fouling via the 34-LDP spacer, this element effectively reclaims concentrated cooling tower blowdown water laden with suspended solids.
- Municipal Water Purification: Municipalities leverage the guaranteed 99.4% minimum salt rejection and standard 8-inch cross-compatibility to efficiently desalinate difficult brackish groundwater sources on a massive scale.
- Industrial Demineralization: Facilities requiring ultra-pure water rely on the element's proven chemical capacity to aggressively reject difficult low-molecular-weight ions, including targeted ammonium and nitrate complexes.
- Food & Beverage Manufacturing: Because all wetted components comply with FDA 21 CFR § 177.2550 and § 170 to 199, procurement managers specify this element for direct liquid food processing and potable ingredient water purification without regulatory friction.
Cross-Compatibility & System Integration
The DuPont FilmTec Eco Pro-400i is manufactured to universally recognized dimensional standards for industrial reverse osmosis systems, measuring exactly 7.9 inches (201 mm) in outer diameter. This ensures seamless drop-in compatibility with standard 8-inch inner diameter pressure vessels constructed from fiberglass-reinforced plastic (FRP) or stainless steel. When evaluating housing limits, system engineers should note the maximum pressure drop tolerance is 50 psi (3.5 bar) for vessels containing a minimum of four elements in series.
A critical integration feature is the proprietary iLEC (Interlocking End Cap) system. Unlike legacy elements that require separate slip-fit inter-connectors and dual sliding o-rings, the Eco Pro-400i elements physically latch together. A single element disconnected measures 40.5 inches (1,029 mm) in length; however, when the iLEC caps are locked together inside the pressure vessel, the net assembled length correctly compresses to the standard 40.0 inches (1,016 mm) per element. The core permeate tube maintains a standard 1.125-inch (29 mm) inner diameter. A pre-installed fiberglass outer wrap and U-cup brine seal (0.5-inch depth) ensure directional feed flow without structural expansion under high-pressure dynamic loads.
Engineers integrating this component must ensure pretreatment protocols adhere to the maximum feed Silt Density Index (SDI) of 5, and that active dechlorination systems are operational, as the polyamide membrane structure is strictly limited to free chlorine exposure of less than 0.1 ppm. Compatibility with existing CIP chemical dosing skids is extremely high due to the broad 1 to 13 short-term pH tolerance.
Frequently Asked Questions
Q: What is the permeate flow rate of the DuPont FilmTec Eco Pro-400i?
Under standard test conditions (150 psi, 2000 ppm NaCl, 77°F), this element generates 11,500 gallons per day (43.5 cubic meters per day) of pure permeate water.
Q: Is the DuPont FilmTec Eco Pro-400i FDA compliant for food applications?
Yes. The membrane complies with the U.S. Food, Drug and Cosmetic Act under Food Additive Regulation 21 CFR § 177.2550, and its internal components comply with 21 CFR § 170 to 199 for potable water contact.
Q: What is the maximum operating pressure and temperature?
The element can withstand a maximum operating pressure of 600 psi (41 bar) and a maximum continuous operating temperature of 113°F (45°C). However, if continuous operation occurs above pH 10, the maximum temperature limit is reduced to 95°F (35°C).
Q: What is the function of the iLEC interlocking end caps?
The iLEC technology physically connects adjacent membrane elements in a pressure vessel, eliminating the need for traditional sliding o-rings. This reduces systemic pressure drop, lowers operational costs, and minimizes the risk of o-ring leaks that compromise permeate quality.
Q: What is the maximum Silt Density Index (SDI) allowed for feed water?
The maximum feed Silt Density Index (SDI) for this element is 5. While the 34-mil low differential pressure spacer offers enhanced fouling protection, proper pretreatment is still required.
Q: Where can I buy the DuPont FilmTec Eco Pro-400i in bulk?
You can procure this element in bulk or container volumes directly through Growthbet LTD. Contact sales@growthbet.net for a verified DDP (Delivered Duty Paid) quotation.
Source This Product From Growthbet LTD
Growthbet LTD is a UK-registered global industrial procurement company specializing in sourcing and delivering technical components under a full-liability DDP (Delivered Duty Paid) model. When you source through Growthbet, the company assumes complete responsibility for supplier verification, quality control, international freight, customs clearance, and last-mile delivery to your facility — with a single, transparent invoice and no hidden costs.
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