LP-2540

Summary

Product identification

FilmTec™Tape-Wrapped 2540 Elements are available for commercial applications, including those requiring high purity water or seeking low total system costs. These tape-wrapped elements are constructed with the same high-quality membranes and materials as industrial elements, but without a hard outershell, making them economical for commercial systems with one or two elements per housing.

Two specific products are highlighted:

• FilmTec™XLE-2540: Described as one of the most productive, lowest pressure RO membranes available, offering one of the lowest total system costs.
  • Part Number: 154543
• FilmTec™TW30-2540: An industry standard for reliable operation and production of high-quality water.
  • Part Number: 80643

Membrane Type: Polyamide Thin-Film Composite

Typical Properties

• Permeate flow and salt rejection are based on the following test conditions: 77°F (25°C), 15% recovery.
• Applied pressure for XLE-2540: 100 psig (6.9 bar) on a 500 ppm NaCl feed stream.
• Applied pressure for TW30-2540: 225 psig (15.5 bar) on a 2,000 ppm NaCl feed stream.
• Permeate flows for individual elements may vary ±20%.

Operating limits

• Maximum Operating Temperature: 113°F (45°C) (Note: Maximum temperature for continuous operation above pH 10 is 95ºF (35ºC)).
• Maximum Operating Pressure: 600 psig (41 bar)
• Maximum Feed Flow Rate: 6 gpm (1.4 m³/hr)
• Maximum Pressure Drop (per element): 13 psig (0.9 bar)
• pH Range:
  • Continuous Operation: 2 - 11
  • Short-Term Cleaning (30 min.): 1 - 13
• Maximum Feed Silt Density Index (SDI): SDI 5
• Free Chlorine Tolerance: <0.1 ppm (Note: DuPont recommends removing residual free chlorine by pretreatment to prevent premature membrane failure, as oxidation damage is not covered under warranty).

Mechanical / hydraulic

• TW30-2540 and XLE-2540 elements fit nominal 2.5-inch I.D. pressure vessels.
• Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).

Important Information

• Startup: Proper startup is essential to prepare membranes for service and prevent damage. System checks (pretreatment, loading, instrument calibration) should be completed first.
  • Avoid abrupt pressure or cross-flow variations.
  • Increase feed pressure gradually over 30-60 seconds.
  • Achieve cross-flow velocity gradually over 15-20 seconds.
• General Operation:
  • Keep elements moist at all times after initial wetting.
  • To prevent biological growth during prolonged shutdowns, immerse elements in a preservative solution.
  • Avoid static permeate-side backpressure at all times.
  • The customer is responsible for effects of incompatible chemicals and lubricants.
• Warranty: The limited warranty will be null and void if operating limits and guidelines are not strictly followed.
• Regulatory: This product may be subject to drinking water application restrictions in some countries; check status before use and sale.
• Cyst and Pathogen Removal: The use of this product alone does not guarantee removal of cysts and pathogens. Effective reduction depends on complete system design, operation, and maintenance.

Disclaimer

This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. For contractual data, always refer to the official OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet