DOW™ FILMTEC™ 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.

Features:

• Dow Filmtec TW30-2521 Commercial Reverse Osmosis Membrane:
• 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 industry’s longest lasting and most reliable performance.
• Dow Filmtec Part # 80641

Specifications:

• Dow Filmtec TW30-2521 Commcerial Reverse Osmosis Membrane Specs:
• Dimensions: 2.5" W X 21" L
• Maximum Operating Temperature: 113°F (45°C)
• TW30-2521 Permeate Flow Rate gpd (m3/d): 325 gpd (1.23)
  (Permeate flow rates for individual elements may vary +/-20%.)
• Maximum Operating Pressure: 600 psig (41 bar)
• Maximum Stabilized Salt Rejection: 99.5 %
• 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: 1-13
• Dow Filmtec TW30-2521 Reverse Osmosis Membrane Materials of Construction:
• Membrane Type: Polyamide Thin-Film Composite

Instructions:

• Dow Filmtec TW30-2521 Reverse Osmosis Membrane Instructions:
• After installation of the Filmtec TW30-2521, the first full tank of permeate should be discarded. Do not use this initial permeate.
• 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.
• 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.
• 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.
• During start-up, a gradual change from a standstill to operating state is recommended:
  - 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
  - Permeate obtained from first hour of operation should be discarded.