TW30-2521

Summary

Product identification

FilmTec™ Reverse Osmosis (RO) Elements are designed for small commercial systems, purifying less than one gallon per minute (0.2 m³/d) of RO water. They are available in various sizes to meet space requirements.

This summary refers to the TW30-2521 product.

Product water

• Permeate Flow Rate: 325 gpd (1.23 m³/d)
• Stabilized Salt Rejection: 99.5%

These values are based on the following test conditions:

• Applied Pressure: 225 psig (15.5 bar)
• Feed Stream: 2,000 ppm NaCl
• Temperature: 77°F (25°C)
• Recovery Rate: 8%
• Permeate flows for individual elements may vary +/-20%.

Operating limits

• Membrane Type: Polyamide Thin-Film Composite
• Maximum Operating Temperature: 113°F (45°C)
  • Maximum temperature for continuous operation above pH 10 is 95°F (35°C).
• Maximum Operating Pressure: 600 psig (41 bar)
• Maximum Pressure Drop (per element): 13 psig (0.9 bar)
• Maximum Pressure Drop (across entire pressure vessel): 30 psi (2.1 bar)
• pH Range (Continuous Operation): 2 - 11
• pH Range (Short-Term Cleaning, 30 min.): 1 - 13

Feed water

• Maximum Feed Silt Density Index (SDI): 5
• Free Chlorine Tolerance: <0.1 ppm (Under certain conditions, free chlorine and other oxidizing agents will cause premature membrane failure.)

Mechanical / hydraulic

• Part Number: 80641
• Maximum Feed Flow Rate: 6 gpm (1.4 m³/h)
• Dimensions - Inches (mm):
  • A: 21.0 (533)
  • B: 1.19 (30)
  • C: 0.75 (19)
  • D: 2.4 (61)
• Pressure Vessel Fit: Elements fit nominal 2.5 inch I.D. pressure vessels.

Operational Guidelines:

• Avoid abrupt pressure or cross-flow variations during start-up, shutdown, or cleaning.
• Feed pressure should be increased gradually over a 30-60 second time frame.
• Cross-flow velocity should be achieved gradually over 15-20 seconds.
• Keep elements moist at all times after initial wetting.
• Avoid static permeate-side backpressure at all times.
• Permeate obtained from the first hour of operation should be discarded.

Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data for any project must match the official OEM PDF revision.

Official datasheet (PDF)

PDF datasheet