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Dow Filmtec TW30-2521 Commercial Reverse Osmosis Membrane

Price $282.99 List Price Price $403.99 Save 29%
Availability: Special Order Item - Free Shipping
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  • 1Filter$282.99 
  • 3Filters Price $266.27 each
  • 6Filters Price $254.69 each
  • Dow Filmtec TW30-2521 commercial reverse osmosis (RO) elements offer the highest quality water for small commercial systems purifying less than one gallon per minute (0.2 m3/d) of RO water
  • Dow Filmtec membranes also deliver savings by providing the industrys longest lasting and most reliable performance
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The Dow Filmtec TW30-2521 Commercial Reverse Osmosis Membrane.
Package Qty1
Used In BrandsFilmtec
Manufacturer's IdTW30-2521
Actual Size (in)21 inches (length) x 2 1/2 inches (width)
Actual Size (cm)53.34 x 6.35
MediaPolyamide Thin-Film Composite
Primary Filter MediaSemi-Permeable Membrane
Maximum Operating Pressure (psi)600
Maximum Temperature (°F)113
Flow Rate (gpm)6.00
Flow Rate (lpm)22.71
Flow Rate (gpd)300
Chlorine Tolerance< 0.1 ppm
Additional InformationOperating pH Range: 2-11 (Max temp for operation above pH 10 is 95 F/35 C), Cleaning pH Range: 1 - 13, Salt Rejection: 99.5%

Reduced Contaminants

The FILMTEC-TW30-2521 is comparable with the following part numbers



  1. After installation of the Filmtec TW30-2521, the first full tank of permeate should be discarded. Do not use this initial permeate
  2. Proper start-up of reverse osmosis water treatment system is essential to prepare the TW30-2521 industrial membrane elements for operating service and to prevent membrane damage due to overfeeding or hydraulic shock
  3. Keep the TW30-2521 RO element moist at all times after initial wetting. During prolonged system shutdowns, it is recommended that the Filmtec Dow TW30-2521 membrane elements be immersed in a preservative solution. This is to prevent biological growth
  4. Avoid any abrupt pressure or cross-flow variations on the spiral elements during shutdown, cleaning or other sequences to prevent possible TW30-2521 Reverse Osmosis Membrane damage
  5. During start-up, a gradual change from a standstill to operating state is recommended
  6. Feed pressure should be increased gradually over a 30-60 second time frame - Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds
  7. Permeate obtained from first hour of operation should be discarded
  8. Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar)

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