LOW2-2521

Summary

Product identification

The product is a LOW2-2521 Low Energy, Excellent Rejection Brackish Water Element.

• Configuration: Spiral Wound
• Membrane Polymer: Composite Polyamide
• Brine Spacer Material: Polypropylene

Performance specifications

The element offers low energy operation and excellent rejection for brackish water applications.

• Nominal Permeate Flow: 280 gpd (1.1 m³/d)
• Nominal Salt Rejection: 99.4% (99.0% minimum)
• Nominal Membrane Area: 12 ft² (1.1 m²)

Test Conditions:

• NaCl Solution: 1500 ppm
• Applied Pressure: 150 psi (10.3 bar)
• Operating Temperature: 77 °F (25 °C)
• Permeate Recovery: 10%
• pH Range (after 30 min operation): 6.5 ÷ 7.0

Operating limits

These are general limits; specific projects may require more conservative values for optimal performance and membrane lifespan.

• Maximum Operating Pressure:
  • Fiberglassed: 600 psi (41.4 bar)
  • Tape Wrapped: 300 psi (20.7 bar)
• Maximum Temperature: 113 °F (45 °C)
• Maximum Pressure Drop: 10 psi (0.7 bar)
• Maximum Feed Flow: 6 gpm (23 lpm)
• Maximum Chlorine Concentration: <0.1 ppm
• Feedwater pH Range: 3.0 ÷ 10.0
• Feedwater SDI (15min): 5.0
• Feedwater Turbidity: 1.0 NTU
• Minimum ratio of concentrate to permeate flow: 5:1

Mechanical / hydraulic

• Dimensions:
  • Total Length (A): 21.0 inches (533.4 mm)
  • Diameter (B): 2.4 inches (61 mm)
  • Connection Diameter (C): 0.75 inches (19.1 mm)
  • Core Tube Extension Feed Side (DF): 1.2 inches (30.5 mm)
  • Core Tube Extension Conc. Side (DC): 1.2 inches (30.5 mm)
• Weight: 2 lbs (0.9 Kg)

Guidelines and Notices

• Minimum permeate flow for individual elements can be 15 percent below the listed flow.
• Elements are vacuum sealed in a polyethylene bag containing less than 1.0% sodium meta-bisulfite.
• The permeate obtained during the first hour of operation should be discarded.
• Avoid static permeate-side backpressure at all times.
• These membranes may be subject to drinking water application restrictions in some countries; users should check the application status before use and sale.
• For element loading, use only glycerine to lubricate O-rings and the brine seal.
• The presence of free chlorine and other oxidizing agents will cause membrane failure, and such damage is not covered under warranty.

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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