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Filmtec XLE-4021 Reverse Osmosis 4" Membrane
Filmtec XLE-4021 Reverse Osmosis 4" Membrane

Filmtec XLE-4021 Reverse Osmosis 4" Membrane
Our Price: $249.00

Availability:: Usually Ships in 3 to 5 Days
Product Code: XLE-4021

Description Spec Sheet / Manual Technical Specifications


(Suggested alternative: Hydranautics ESPA-4021)

DOW FILMTEC XLE-4021 reverse osmosis (RO) elements offer high quality water for small commercial systems purifying less than one gallon per minute (0.2 m3/d) of RO water. DOW FILMTEC XLE extra low energy elements operate at the lowest pressure available in the industry today, resulting in lower energy costs and enabling system builders to use lower cost components.

Membrane TypePolyamide Thin-Film Composite
Maximum Operating Temperature113ºC (45ºC)
Maximum Operating Pressure600 psi (41 bar)
Maximum Pressure Drop13 psig (0.9 bar)
pH Range, Continuous Operation2 - 11
pH Range, Short-Term Cleaning (30 min.)1 - 13
Maximum Feed Silt Density Index (SDI)SDI 5
Free Chlorine Tolerance< 0.1ppm

Maximum temperature for continuous operation above pH 10 is 95°F (35°C).

Used In:

  • Commercial Water treatment systems;
  • food service;
  • medical and research institutions;
  • hospitality industry


  • High flux results in high yields;
  • High rejection provides good water quality;
  • Filmtec performance and quality
Please contact ForeverPure Corporation USA for large quantity discount.

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