LG SW 4040 R

Summary

Product identification

LG Chem’s LG SW 4040 R is a seawater Reverse Osmosis (RO) membrane element. It incorporates Thin Film Nanocomposite (TFN) technology, offering industry-leading salt rejection and 20% more flow compared to conventional membranes. These membranes are designed to reduce the cost of desalination while delivering superior water quality.

LG SW R (High Rejection) membranes are suitable for medium to high salinity seawater applications, combining high rejection with low energy requirements.

Product Specifications

• Active Membrane Area: 80 ft² (7.4 m²)
• Permeate Flow Rate: 1,950 GPD (7.4 m³/d)
• Stabilized Salt Rejection: 99.7%
• Minimum Salt Rejection: 99.5%
• Feed Spacer: 28 Mil

Test Conditions: These specifications are based on testing with 32,000 ppm NaCl at 25°C (77°F), 800 psi (55 bar), pH 8, and Recovery 8%. Permeate flows for individual elements may vary +/-20%.

Mechanical / Hydraulic

The following dimensional information is indicative and for reference purposes only:

• A: 1,016 mm (40 in.)
• B: 100 mm (3.9 in.)
• C: 19 mm (0.75 in.)
• D: 29 mm (1.1 in.)
• Weight: 4.2 kg (9.3 lbs.)

Operating limits

• Max. Applied pressure: 1,200 psi (82.7 bar)
• Max. Chlorine concentration: < 0.1 ppm
• Max. Operating temperature: 45°C (113°F)
• pH Range, Continuous (Cleaning): 2-11 (2-13)
• Max. Feedwater turbidity: 1.0 NTU
• Max. Feedwater SDI (15 mins): 5.0
• Max. Feed flow: 15 gpm (3.4 m³/h)
• Min. Ratio of concentrate to permeate flow for any element: 5 : 1
• Max. Pressure drop (ΔP) for each element: 15 psi (1.0 bar)

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Disclaimer: The information provided is based on the extracted text and is intended for summary purposes. Extraction may miss figures, footnotes, or revisions present in the original document. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet