Filmtec LE-4040 Element – Progressive Water Treatment
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Filmtec LE-4040 Element

Filmtec LE-4040 Element

  • $ 245.00

Dow® Filmtec™ LE-4040 products are available to meet a wide variety of customer needs in commercial applications, from producing high purity water to delivering low total system costs. Dow's fully automated element production enables the most consistent products in the industry that minimizes the total cost of ownership of water treatment systems. LE-4040 membranes deliver high performance at low 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.


  • Diameter: 4"
  • Length: 40"
  • Weight: 15 lbs
  • Active Membrane: 78 ft2
  • Membrane Type: Polyamide Thin Film Composite
  • Outer Shell: Hard Fiberglass
  • Applied Pressure: 150 PSI
  • Nominal Capacity: 2500 GPD
  • Maximum Pressure: 600 PSI
  • Stabilized Salt Rejection: 99.0%


  • 34 mil Feed Spacer
  • Maximum Operating Temperature: 113°F (45°C)
  • Chlorine Tolerance: <0.1 PPM
  • Maximum Feed Flow Rate: 16 GPM
  • Maximum Pressure Drop: 15 PSI
  • pH Range, Continuous Operation: 2-11
  • pH Range, Short Term Cleaning (30min): 1-13


  • Applied Pressure: 150 PSIG (10.3 BAR)
  • 77°F (25°C) Operating Temperature
  • 15% Permeate Recovery


  • For use in commercial water demineralization
  • High rejection results in excellent water quality
  • Low energy usage reduces power consumption and costs
  • Durable with good cleanability for long element life
  • Filmtec performance and quality

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