DuPont FilmTec™ BW30XFRLE-400/34i Extra Fouling Resistant Low Energy Brackish Water RO Membrane – 8" x 40"

DuPont FilmTec™ BW30XFRLE-400/34i Extra Fouling Resistant Low Energy Brackish Water Reverse Osmosis Membrane – 8" x 40" with iLEC™ Interlocking End Caps | 11,500 GPD

The FilmTec™ BW30XFRLE-400/34i is DuPont’s advanced extra fouling resistant, low energy brackish water RO membrane, specifically engineered for challenging feed waters and wastewater reuse applications where traditional elements foul quickly. It combines excellent salt rejection with up to 30% lower energy consumption than standard pressure elements, while delivering superior fouling resistance and the industry’s widest cleaning pH range for unmatched durability and cleanability.

With a 400 ft² active area, thick 34 mil low differential pressure (LDP) feed spacer, and innovative iLEC™ interlocking end caps, this element minimizes O-ring leaks, reduces telescoping risk, lowers operating costs, and simplifies installation in large-scale systems. Ideal for municipal and industrial plants producing over 10 GPM of permeate, the BW30XFRLE-400/34i provides reliable high-purity water with reduced cleaning frequency, extended membrane life, and lower total cost of ownership — even in fouling-prone waters.

Key Benefits:

• Extra Fouling Resistance — Optimized design with 34 mil LDP feed spacer handles challenging brackish waters, wastewater reuse, and higher-fouling sources better than standard elements.
• Low Energy Operation — Achieves strong performance with up to 30% lower pressures, reducing electricity and pumping costs.
• High Rejection Performance — 99.3% stabilized salt rejection (minimum 99.1%) plus excellent removal of silica, nitrate, and ammonium for superior permeate quality.
• iLEC™ Interlocking End Caps — Reduces leaks, improves water quality consistency, and lowers maintenance expenses.
• Superior Cleanability & Durability — Widest pH cleaning range (1–13 short-term) combined with robust chemical tolerance for the most effective cleaning and longest element life.
• Fiberglass Outer Wrap — Ensures structural strength and reliability in high-flow industrial setups.

Ideal Applications:

• Municipal drinking water and wastewater reuse
• Industrial water demineralization and utility water
• Food & beverage processing
• Challenging brackish water sources and water reclamation projects
• Large commercial and industrial RO systems (>10 GPM permeate)

Technical Specifications:

• Active Area: 400 ft² (37 m²)
• Feed Spacer Thickness: 34 mil (LDP – Low Differential Pressure)
• Permeate Flow Rate: 11,500 GPD (43.5 m³/d) nominal
• Stabilized Salt Rejection: 99.3%
• Minimum Salt Rejection: 99.1%
• Membrane Type: Polyamide Thin-Film Composite
• Dimensions: 40" Length × 8" Diameter (net length when interlocked: 40")
• Maximum Operating Pressure: 600 psi (41 bar)
• Maximum Operating Temperature: 113°F (45°C)
• pH Range (Continuous): 2–11 | Short-Term Cleaning: 1–13
• Maximum Pressure Drop: 15 psi per element / 50 psi per vessel
• Maximum Feed Flow: 75 GPM (17 m³/h)
• Free Chlorine Tolerance: <0.1 ppm
• Maximum Feed SDI: 5

Test conditions: 2,000 ppm NaCl, 150 psi (10.3 bar), 77°F (25°C), pH 8, 15% recovery.

Backed by DuPont’s technical expertise and decades of innovation, the BW30XFRLE-400/34i is the smart choice for plant operators dealing with difficult waters who need reliable performance, lower energy use, and reduced maintenance.

Pro Tip: Always use proper pretreatment and follow DuPont FilmTec™ design guidelines for best long-term results. Pair with DuPont technical support for optimal system configuration.

Upgrade your RO system today with the FilmTec™ BW30XFRLE-400/34i — experience advanced anti-fouling protection, low-energy efficiency, and consistent high-purity output.