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FilmTec Membrane BW30-4040, Dry FilmTec Membrane XLE-4040 Dry FilmTec Membrane XLE-4021 Dry
DOW FILMTEC™ Membranes
DOW FILMTEC Fiberglassed Elements for Light Industrial Systems
Features
DOW FILMTEC™ brackish water reverse osmosis membrane elements provide consistent, outstanding system performance in light industrial applications.
 DOW FILMTEC LE-4040 delivers highest performance at lowest pressure resulting in less energy usage and lower costs.
 DOW FILMTEC BW30-4040 is the industry standard for reliable operation and production of the highest quality water.
 DOW FILMTEC BW30-2540 elements are designed for systems smaller than 1 gpm (0.2 m3/h) offering a hard shell exterior for extra strength.
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.
FILMTEC Extra Low Energy (XLE) Elements for Commercial Systems
Product Information
FILMTEC Membranes • FilmTec Corporation is a wholly owned subsidiary of The Dow Chemical Company.
*Trademark of The Dow Chemical Company
Operating Limits
Membrane Type .................................................Polyamide Thin-Film Composite
Maximum Operating Temperature....................................................113°F (45°C)
Maximum Operating Pressure ...................................................600 psig (41 bar)
Maximum Pressure Drop ............................................................13 psig (0.9 bar)
pH Range, Continuous Operationa ................................................................2–11
pH Range, Short-Term Cleaning (30 min.)b...................................................1–12
Maximum Feed Silt Density Index (SDI) ......................................................SDI 5
Free Chlorine Tolerancec........................................................................<0.1 ppm
a Maximum temperature for continuous operation above pH 10 is 95°F (35°C).
b Refer to Cleaning Guidelines in specification sheet 609-23010/CH 172-086-E.
c Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not
covered under warranty, FilmTec recommends removing residual free chlorine by pretreatment prior to membrane exposure. Please refer to technical
bulletin 609-22010/CH 172-144-E for more information.
New FILMTEC® XLE elements offer better system performance and economics by operating at very low applied
pressure. XLE membrane, made with a patented technology, provides consistent and reliable system performance. And
for added convenience, XLE elements are available in a dry state for rapid start-up (see Figure 1 on reverse). The new
XLE series of elements replaces TW30LE elements which were made with an older membrane technology.
DOW FILMTEC™ Membranes
DOW FILMTEC Extra Low Energy (XLE) Elements for Commercial Systems
Features
New DOW FILMTEC™ XLE elements offer better system performance and economics by operating at very low applied pressure. XLE membrane, made with a patented technology, provides consistent and reliable system performance. And for added convenience, XLE elements are available in a dry state for rapid start-up (see Figure 1 on reverse). The new XLE series of elements replaces TW30LE elements which were made with an older membrane technology