DuPont FilmTec BW30 PRO 400 / 34 Membrane

DuPont FilmTec BW30 PRO-400/34 is a high rejection and high performance industry-standard brackish water Reverse Osmosis (RO) membrane elements.


  • Delivers consistent water quality and higher rejection and flow than previous generation BW30 product
  • Based on historical BW30 Industry-standard RO membrane with decades of proven performance
  • Excellent durability resulting in stable, long-term performance


DuPont FilmTec BW30 PRO-400 Brackish Water Reverse Osmosis 8″ Elements can separate salts from water and are produced with an automated fabrication process that ensures precision, consistency, and reliability. Ideal for use in large-scale industrial and municipal water treatment systems that produce greater than approximately 10 gpm (2300 L/h) of permeate.

Operating Specifications

  • Membrane Type: Polyamide Thin-Film Composite
  • Maximum Operating Temperature: 113°F (45°C)
  • Maximum Operating Pressure: 600 psig (41 bar)
  • Maximum Pressure Drop:
    Per Element – 15 psig (1.0 bar)
    Per Pressure Vessel (Minimum 4 Elements) – 50 psig (3.5 bar)
  • pH Range:
    Continuous Operation(1): 2-11
    Short-Term Cleaning (30 min.)(2): 1-13
  • Maximum Feed Flow(3): 75 gpm (17 m3/hr)
  • Maximum Feed Silt Density Index: SDI 5
  • Free Chlorine Tolerance(4): < 0.1 ppm


  • Demineralization for industrial applications
  • Power Generation, Steel & Metal
  • Chemical & Petrochemical
  • Municipal water purification


FilmTec BW30 PRO 400 Specifications


DuPont Film Tec Membrane elements, also call as RO filters, are in the finest in the industry. The membranes provided in Reverse Osmosis Thin Film (RO Membranes), and Special Application membrane materials are of the best quality with performance comparable to others. The strong nature and working methods ensure matchless quality than most other (RO) elements over the broadest pH range.

One of the major advantages is its highest rejection of total dissolved solids that are vital to the efficient working of any water treatment system. This system has an excellent high-active membrane surface area that produces 99.5 percent or greater typical salt rejection performance.

Membrane technology polyamide chemistry has the resisting capacity towards organic and biological contamination. It will allow the system to remain as the eco-friendly in nature. This system consumes less energy which reduces the cost of operation. This is appropriate to meet emerging requirement for lower-pressure RO system operation. All these qualities will help to reduce operating cost without sacrificing salt rejection.

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