BW30-4040 FilmTec 4 x 40″ Brackish Water Membrane

FilmTec™ BW30-4040 Reverse Osmosis Membrane

The FilmTec™ BW30-4040 RO membrane is the industry standard for brackish water treatment in light industrial applications, trusted worldwide for its high salt rejection, durability, and consistent performance. Manufactured by DuPont (Dow FilmTec), this spiral-wound polyamide thin-film composite membrane delivers superior permeate water quality while reducing the impact of membrane fouling.

Designed for industrial RO systems, the BW30-4040 provides long service life, easy cleanability across a wide pH range, and reliable operation even under demanding conditions. Its durable fiberglass shell withstands higher pressure drops, making it an excellent choice for industries seeking cost-effective and efficient brackish water desalination.

Key Features & Benefits

• High Salt Rejection (99.5%) – ensures premium water purity.

• High Permeate Flow (9.1 m³/hr) – supports consistent system performance.

• Durable Design – fiberglass shell for higher pressure tolerance.

• Wide pH Range (1–13) – easy cleaning and longer membrane lifespan.

• Compact 4″ x 40″ Size – ideal for light industrial and commercial RO systems.

• Optimized for Brackish Water – reliable solution for desalination and water reuse.

Specifications

• Membrane Type: Polyamide Thin-Film Composite

• Application: Brackish Water RO Systems

• Length: 40″ (1016 mm) | Diameter: 4″ (99 mm)

• Salt Rejection: 99.5%

• Permeate Flow Rate: 9.1 m³/hr

• Max. Operating Pressure: 41 bar

• Max. Operating Temperature: 45°C

• pH Range (Continuous): 2–11 | pH Range (Cleaning): 1–13

• Max. Feed Flow Rate: 3.6 m³/hr

• Max. SDI (Silt Density Index): 5

• Free Chlorine Tolerance: <0.1 ppm

• Model Number: BW30-4040 | Part Number: 80783

Why Choose FilmTec™ BW30-4040?

With proven efficiency, reliability, and global trust, the FilmTec™ BW30-4040 is the preferred choice for brackish water RO applications in industries like food & beverage, pharmaceuticals, textiles, and municipal water treatment. It helps reduce operational costs by extending membrane life while ensuring high-quality water production.