LOW4-4040

Summary

Product Identification

• Model: LOW4-4040
• Type: Extra Low Energy, Excellent Productivity - Brackish Water Element
• Configuration: Spiral Wound
• Membrane Polymer: Composite Polyamide
• Brine Spacer Material: Polypropylene
• Nominal Membrane Area: 85 ft² (7.9 m²)

Product Water

• Nominal Permeate Flow: 2600 gpd (9.8 m³/d)
• Nominal Salt Rejection: 99.2%
• Minimum Salt Rejection: 99.0%

Test Conditions

(Performance based on these conditions after 30 minutes of operation)

• Solution: 500 ppm NaCl
• Applied Pressure: 100 psi (6.9 bar)
• Operating Temperature: 77 °F (25 °C)
• Permeate Recovery: 15%
• pH: 6.5 ÷ 7.0

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: 16 gpm (3.6 m³/h)
• Maximum Chlorine Concentration: <0.1 ppm
• Maximum Feedwater SDI (15min): 5.0
• Maximum 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): 40.0 inches (1016 mm)
• ATD Diameter (B): 3.95 inches (100.3 mm)
• Connection Diameter (C): 0.75 inches (19.1 mm)
• Core Tube Extension (Feed Side) (DF): 1.05 inches (26.7 mm)
• Core Tube Extension (Concentrate Side) (DC): 1.05 inches (26.7 mm)
• Weight: 8 lbs (3.6 Kg)

General Guidelines and Notices

• Permeate flow for individual elements may vary ±20 percent.
• Elements are vacuum sealed in a polyethylene bag containing less than 1.0% sodium meta-bisulfite and 10% propylene glycol solution.
• 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; verify 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, 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 found in the official PDF datasheet. For contractual purposes, refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet