SW30-4021

Summary

Product identification

FilmTec™ Seawater Reverse Osmosis Elements for Marine Systems offer high productivity and excellent salt rejection. These SW30 elements are designed to meet the water demands of both sea-based and land-based desalinators, offering high flow rates and the possibility of operation at lower pressures to reduce costs.

This document specifically references the FilmTec™ SW30-4021 element.

• Part Number: 80740
• Permeate Flow Rate: 800 gpd (3.0 m³/d)
• Stabilized Salt Rejection: 99.4%
• Applied Pressure (test conditions): 800 psig (55 bar)
  • Permeate flow and salt rejection are based on test conditions: 32,000 ppm NaCl, 77°F (25°C), and 5% recovery for SW30-4021.
  • Individual element permeate flows 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: 1,000 psi (69 bar)
• Maximum Pressure Drop: 15 psig (1.0 bar)
• pH Range - Continuous Operation: 2 - 11
• pH Range - Short-Term Cleaning: 1 - 13
• Free Chlorine Tolerance: <0.1 ppm
  • Removal of residual free chlorine by pretreatment is recommended to prevent premature membrane failure.
• Maximum Pressure Drop across an entire pressure vessel (housing): 50 psi (3.4 bar)

Mechanical / hydraulic

• Product: SW30-4021
• Elements fit nominal: 4-inch I.D. pressure vessel
• Maximum Feed Flow Rate: 16 gpm (3.6 m³/h)
• Dimensions – Inches (mm):
  • A: 21.0 (533)
  • B: 1.05 (26.7)
  • C: 0.75 (19)
  • D: 3.9 (99)

General Information

• Keep elements moist at all times after initial wetting.
• To prevent biological growth during prolonged system shutdowns, membrane elements should be immersed in a preservative solution.
• Avoid static permeate-side backpressure at all times.
• Avoid abrupt pressure or cross-flow variations during start-up, shutdown, or cleaning to prevent membrane damage.
  • Feed pressure should be increased gradually over a 30-60 second time frame.
  • Cross-flow velocity at the set operating point should be achieved gradually over 15-20 seconds.
• Proper start-up procedures are essential to prepare membranes for service and prevent damage. This includes completing pretreatment, element loading, instrument calibration, and other system checks before initiation.

Disclaimer

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

Official datasheet (PDF)

PDF datasheet