LOW2-4021

Summary

Product identification

• Model: LOW2-4021
• Type: Low Energy, Excellent Rejection - Brackish Water Element
• Configuration: Spiral Wound
• Membrane Polymer: Composite Polyamide
• Brine Spacer Material: Polypropylene

Specifications (Test Conditions)

The following performance is based on specific test conditions:

• Solution: 1500 ppm NaCl
• Applied Pressure: 150 psi (10,3 bar)
• Operating Temperature: 77 °F (25 °C)
• Permeate Recovery: 10%
• pH Range: 6,5 ÷ 7,0 (after 30 min of operation)

Product water

• Nominal Permeate Flow: 730 gpd (2,76 m³/d)
• Nominal Salt Rejection: 99,4%
• Minimum Salt Rejection: 99,0%
• Nominal Membrane Area: 35 ft² (3,2 m²)

Operating limits

• Maximum Operating Pressure (Fiberglassed): 600 psi (41,4 bar)
• Maximum Operating Pressure (Tape Wrapped): 300 psi (20,7 bar)
• Maximum Temperature: 113 °F (45 °C)
• Maximum Pressure Drop: 10 psi (0,7 bar)
• Maximum Feed Flow: 12 gpm (45,4 lpm)
• Feed Chlorine Concentration: <0,1 ppm
• Feedwater SDI (15min): 5,0
• Feedwater Turbidity: 1,0 NTU
• Feedwater pH Range: 3,0 ÷ 10,0
• Minimum ratio of concentrate to permeate flow for any element: 5:1

Mechanical / hydraulic

• Total Length (A): 21.0 inches (533,4 mm)
• Diameter (B): 3.95 inches (100,3 mm)
• ATD 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: 4 lbs (1,8 Kg)

Important Notes

• Minimum permeate flow for individual elements 15 percent below listed flow.
• Elements are vacuum sealed in a polyethylene bag containing less than 1.0% sodium meta-bisulfite.
• 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; check the application status before use and sale.
• For element loading, use only glycerine to lubricate o-rings and brine seal.
• The presence of free chlorine and other oxidizing agents will cause membrane failure; the damage is not covered under warranty.

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

Official datasheet (PDF)

PDF datasheet