ESNA-LF2-LD-4040

Summary

Product identification

• Membrane Element: ESNA1-LF2-LD-4040 (Low Fouling Technology)
• Configuration: Low Fouling Spiral Wound
• Membrane Polymer: Composite Polyamide
• Membrane Active Area: 80 ft² (7.43 m²)
• Feed Spacer: 34 mil (0.864 mm) with biostatic agent

Performance

• Permeate Flow: 2,000 gpd (7.6 m³/d)
• CaCl₂ Rejection: 90%
• CaCl₂ Rejection (minimum/maximum): 85% / 95%
  • Expected calcium rejection for a typical 500 ppm well water is 96% at 13 gfd operating flux and 25 °C.

Operating limits

• Maximum Applied Pressure: 600 psig (4.14 MPa)
• Maximum Chlorine Concentration: < 0.1 PPM
• Maximum Operating Temperature: 113 °F (45 °C)
• pH Range, Continuous (Cleaning): 2-10 (2-12)
• Maximum Feedwater Turbidity: 1.0 NTU
• Maximum Feedwater SDI (15 mins): 5.0
• Maximum Feed Flow: 16 GPM (3.6 m³/h)
• Minimum Ratio of Concentrate to Permeate Flow for any Element: 5:1
• Maximum Pressure Drop for Each Element: 10 psi

Test Conditions

The stated performance is initial (data taken after 30 minutes of operation), based on the following conditions:

• 500 ppm CaCl₂
• 75 psi (0.52 MPa) Applied Pressure
• 77 °F (25 °C) Operating Temperature
• 15% Permeate Recovery
• 6.5 – 7.0 Feed pH

Mechanical / hydraulic

• Dimensions:
  • A: 40.00 inches (1016 mm)
  • B: 3.95 inches (100.3 mm)
  • C: 0.75 inches (19.1 mm)
• Weight: 8 lbs. (3.6 kg)
• Core tube extension: 1.05 inches (26.7 mm)

Supply and Variation

• Permeate flow for individual elements may vary -20 or +25 percent.
• All membrane elements are supplied with a brine seal, interconnector, and o-rings.
• Elements are enclosed in a sealed polyethylene bag containing less than 1.0% sodium meta-bisulfite solution, and then packaged in a cardboard box.

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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 match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet