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Dow Filmtec SW30-2521 21 inch × 2 1/2 inch Sea Water Desalination Membrane

Dow Filmtec SW30-2521 21 inch × 2 1/2 inch Sea Water Desalination Membrane

Part Number:SW30-2521
MFG ID: SW30-2521 | UPC: 688580786318
Your Price:$264.99
Retail Price:$328.99
Your Savings:$64.00(19%)
In Stock

Dow Filmtec SW30-2521 21 inch × 2 1/2 inch Sea Water Desalination Membrane


  • Dow Filmtec SW30-2521 reverse osmosis membranes offer high productivity while maintaining excellent salt rejection.
  • Filmtec Desalination SW30-2521 reverse osmosis elements can be operated at a lower pressure in order to reduce pump size, cost, and operating expenses.
  • Filmtec Seawater SW30-2521 RO membrane elements have the highest flow rates available to meet the water demands of both sea-based and land-based desalinators.
  • Dow Filmtec Part #80734


  • Dimensions: 2.5" W X 21" L
  • Active Area ft2 (m2): 13 (1.2)
  • Maximum Operating Temperature: 113°F (45°C)
  • Maximum Operating Pressure: 1,000 psig (69 bar)
  • Maximum Pressure Drop: 15 psig (1.0 bar)
  • SW30-2521 Permeate Flow Rate gpd (m3/d): 300 (1.1) (Permeate flow rates for individual elements may vary +/-20%.)
  • Stabilized Salt Rejection: 99.4%
  • Maximum Feed Silt Density Index (SDI): 5
  • Free Chlorine Tolerance: <0.1 ppm
  • pH Range, Continuous Operation: 2-11 (Maximum temperature for continuous operation above pH 10 is 95°F (35°C))
  • pH Range, Short Term Cleaning (30 min.): 1-13
  • Membrane Type: Polyamide Thin-Film Composite


  • After installation of the Filmtec SW30-2521, the first full tank of permeate should be discarded. Do not use this initial permeate for drinking water or food preparation.
  • Keep the SW30-2521 RO element moist at all times after initial wetting.
  • During prolonged system shutdowns, it is recommended that the Filmtec SW30-2521 membrane elements be immersed in a preservative solution. This is to prevent biological growth.

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