LOW1-4641

Summary

Product identification

• Model: LOW1-4641
• Description: Low Energy, Very High Rejection - Brackish Water Element
• Configuration: Spiral Wound
• Membrane Polymer: Composite Polyamide
• Brine Spacer Material: Polypropylene

Operating limits

• Maximum Feed Flow: 18 gpm (4.1 m³/h)
• Maximum Chlorine Concentration: <0.1 ppm
• Maximum Feedwater SDI (15min): 5.0
• Maximum Feedwater Turbidity: 1.0 NTU
• Maximum Operating Pressure:
  • Fiberglassed: 600 psi (41.4 bar)
  • Tape Wrapped: 300 psi (20.7 bar)
• Maximum Pressure Drop: 10 psi (0.7 bar)
• Maximum Temperature: 113 °F (45 °C)
• Feedwater pH Range: 3.0 ÷ 10.0
• Minimum ratio of concentrate to permeate flow for any element: 5:1

Feed water

Test conditions for performance (after 30 minutes of operation):

• Solution: NaCl 1500 ppm
• Operating Temperature: 77 °F (25 °C)
• pH Range: 6.5 ÷ 7.0

Product water

• Nominal Membrane Area: 120 ft² (11.2 m²)
• Permeate Flow:
  • 3600 gpd (13.6 m³/d) at 150 psi (10.3 bar) applied pressure
  • 5200 gpd (19.7 m³/d) at 225 psi (15.5 bar) applied pressure
• Salt Rejection: 99.1% nominal (98.5% minimum)
• Permeate Recovery (under test conditions): 15%

Mechanical / hydraulic

• Dimensions:
  • Total Length (A): 41.3 inches (1049 mm)
  • ATD Diameter (B): 4.6 inches (116.8 mm)
  • Connection Diameter (C): 0.75 inches (19.1 mm)
  • Core Tube Extension: 0.0 inches (0.0 mm)
  • Feed Side (DF): 2.19 inches (55.6 mm)
  • Concentrate Side (DC): 2.19 inches (55.6 mm)
• Weight: 11 lbs (5.0 Kg)

Additional Guidelines and Notices

• Permeate obtained from 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 application status before use and sale.
• For element loading, use only glycerine to lubricate o-rings and brine seal.
• Minimum permeate flow for individual elements is 15 percent below the listed flow.
• Elements are vacuum sealed in a polyethylene bag containing less than 1.0% sodium meta-bisulfite and 10% propylene glycol solution.
• The customer is fully responsible for the effects of incompatible chemicals on elements. The presence of free chlorine and other oxidizing agents will cause membrane failure, and this damage is not covered under warranty.

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Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or the latest revisions present in the official PDF datasheet. For contractual data, always refer to the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet