SW30HR-LE-4040

Summary

Product identification

FilmTec™ SW30HR LE-4040 Seawater Reverse Osmosis Element is a four-inch diameter reverse osmosis element designed to provide a high combination of salt rejection and productivity for purifying high salinity water.

• Can be used as a pilot element for larger system design.
• Delivers high sodium chloride (NaCl) and boron rejection.
• Offers high performance over its operating lifetime without oxidative post-treatments, allowing for a wider cleaning pH range (1-13).

Typical Properties

• Product: SW30HR LE-4040
• Part Number: 255048
• Active Area: 85 ft² (7.9 m²)
• Permeate Flow Rate: 1,600 gpd (6.1 m³/d)
• Minimum Salt Rejection: 99.60%
• Stabilized Salt Rejection: 99.75%

Test Conditions: Permeate flow and salt rejection are based on 32,000 ppm NaCl, 800 psi (5.5 MPa), 77°F (25°C), 8% recovery, and pH 8. Permeate flows for individual elements may vary +/-20%.

Mechanical / hydraulic

• Element Dimensions (Inches/mm):
  • Feed Spacer: 28 mil
  • A: 40.0 (1,016)
  • B: 1.05 (26.7)
  • C: 0.75 (19)
  • D: 3.9 (99)
• Elements fit nominal 4-inch I.D. pressure vessel.

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: 1,200 psig (83 bar)
• Maximum Element Pressure Drop: 15 psig (1.0 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

General Information

• Membrane elements must be kept moist at all times after initial wetting.
• To prevent biological growth during prolonged system shutdowns, elements should be immersed in a preservative solution.
• The maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).
• Avoid static permeate-side backpressure at all times.
• The use of this product does not necessarily guarantee the removal of cysts and pathogens from water; effective reduction depends on complete system design, operation, and maintenance.
• Permeate obtained from the first hour of operation should be discarded.
• Start-up procedures recommend increasing feed pressure gradually over 30-60 seconds and achieving cross-flow velocity gradually over 15-20 seconds to prevent membrane damage.

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

Official datasheet (PDF)

PDF datasheet