Filmtec Membrane bw30-4040

DOW Filmtec BW30-4040 RO Membrane 2400 GPD

DOW Filmtec  BW30-4040
RO Membrane 2400 GPD, a 4″ x 40″ brackish water Reverse Osmosis   Membrane bw30-4040that can provide RO quality water up to 2,400 gallons per day at a 15% recovery rate. It can operate at feed pressures ranging from 225 psi to 600 psi with 99.5% salt rejection. This element offers the highest quality water for a medium-sized water treatment system that produces less than approximately 10 GPM (2300 L/h) of permeate. This membrane element features the thickest feed spacer available in the industry today to lessen the impact of fouling as well as a fiber glassed shells.


Welcome to our website featuring the DOW Filmtec BW30-4040 RO Membrane, a cutting-edge solution for brackish water Reverse Osmosis (RO) needs. Our membrane, designed with precision and advanced technology, ensures a reliable water treatment system for various applications.

Key Features and Benefits:

  1. High Performance:

   – Capacity: 2,400 gallons per day.

   – Maximum operating pressure: 600 psi.

   – Salt rejection rate: 99.5%.

  1. Efficient Water Treatment:

   – Removes chemical contaminants, delivering RO quality water.

   – Reduces wastewater volumes, promoting water reuse.

   – High flux results in high yields.

  1. Cost-Effective:

   – Low energy costs due to high rejection, providing excellent water quality.

   – Durable hard shell exterior ensures extra strength and long life.

  1. Versatile Applications:

   – Suitable for industrial water de-mineralization, municipal drinking water production, and water reuse.

   – Part of the “Fiberglass Elements for Light Industrial Systems” line by DOW FILMTEC.

  1. Technological Excellence:

   – Automated fabrication process ensures precision, consistency, and reliability.

   – Fiberglassed shells and thickest feed spacer reduce fouling impact.

  1. Long-Lasting Performance:

   – Resistant to fouling, ensuring extended life.

   – Part of the FILMTEC line known for the industry’s longest-lasting and most reliable performance.


   – Model/SKU: DWC62

   – Dimensions: 4″ x 40″

   – Stabilized Salt Rejection: 99.5%

   – Permeate Flow Rate: 2400 Gal/Day

   – Maximum Feed Flow Rate: 16 gpm

   – Applied Pressure: 225 psi

   – Maximum Operating Pressure: 600 psi

   – Maximum Pressure Drop: 15 psi

   – Maximum Operating Temperature: 113°F

   – pH Range (Continuous Operation): 2 – 11

   – pH Range (Short-Term Cleaning): 1 – 13

   – Maximum Feed Silt Density Index (SDI): SDI 5

   – Free Chlorine Tolerance: < 0.1 ppm

   – Membrane Material: Polyamide Thin-Film Composite

   – Active Area: 78 sq. ft.

   – Outer Wrap: Hard fiberglass outer shell

   – Housing/Pressure Vessel Size: 4 inch


Discover the excellence of DOW Filmtec BW30-4040 RO Membrane – your key to unmatched water purification and treatment efficiency.