LE-4040 Filmtec Brackish Water RO Membrane. DOW FILMTEC LE-4040 delivers highest performance at lowest pressure resulting in less energy usage and lower costs.
Elements with a hard shell exterior are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops.
- Membrane Type Polyamide Thin-Film Composite
- Maximum Operating Temperature 113ºF (45ºC)
- Maximum Operating Pressure 600 psi (41 bar)
- Maximum Feed Flow Rate:
- 4040 elements 16 gpm (3.6 m3/h)
- 2540 elements 6 gpm (1.4 m3/h)
- Maximum Pressure Drop 15 psig (1.0 bar)
- pH Range, Continuous Operation 2 – 11
- pH Range, Short-Term Cleaning 1 – 13
- Maximum Feed Silt Density Index SDI 5
- Free Chlorine Tolerance 0.1 ppm