CSM RE8040-FL440

Summary

Product identification

The CSM RE8040-FL440 is a fouling-resistant reverse osmosis (RO) element designed for low-pressure applications in brackish water and wastewater reuse.

• Membrane type: Thin-Film Composite
• Membrane material: Polyamide (PA)
• Element configuration: Spiral-Wound, FRP Wrapping

Product water

• Permeate flow rate: 12,100 GPD (45.7 m³/day)
• Nominal salt rejection: 99.0%
• Minimum salt rejection: 98.5%
• Effective membrane area: 440 ft² (40.9 m²)

Test Conditions (for stated performance):

• 1,500 mg/L NaCl solution
• 150 psig (1.0 MPa) applied pressure
• 15% recovery
• 77 °F (25 °C)
• pH 6.5–7.0

Operating limits

• Max. Pressure Drop / Element: 15 psi (0.1 MPa)
• Max. Pressure Drop / 240” Vessel: 60 psi (0.41 MPa)
• Max. Operating Pressure: 600 psi (4.14 MPa)
• Max. Feed Flow Rate: 75 gpm (17.0 m³/hr)
• Min. Concentrate Flow Rate: 16 gpm (3.6 m³/hr)
• Max. Operating Temperature: 113 °F (45 °C)
• Operating pH Range: 2.0–11.0
• CIP pH Range: 1.0–13.0
• Max. Turbidity: 1.0 NTU
• Max. SDI (15 min): 5.0
• Max. Chlorine Concentration: < 0.1 mg/L

Feed water

Design Guidelines for Various Water Sources

• Wastewater Conventional (SDI < 5): 8–12 gfd
• Wastewater Pretreated by UF/MF (SDI < 3): 10–14 gfd
• Seawater, Open Intake (SDI < 5): 7–10 gfd
• Seawater, Beach Well (SDI < 3): 8–12 gfd
• Surface Water (SDI < 5): 12–16 gfd
• Surface Water (SDI < 3): 13–17 gfd
• Well water (SDI < 3): 13–17 gfd
• RO permeate (SDI < 1): 21–30 gfd

Saturation Limits (Using Antiscalants)

• Langlier Saturation Index (LSI): <+1.5
• Stiff and Davis Saturation Index (SDSI): <+0.5
• CaSO₄: 230% saturation
• SrSO₄: 800% saturation
• BaSO₄: 6,000% saturation
• SiO₂: 100% saturation

Mechanical / hydraulic

• Length (A): 40.0 inch (1,016 mm)
• Diameter (B): 8.0 inch (201 mm)
• Central pipe diameter (C): 1.12 inch (28 mm)
• Weight: 15 kg
• Part Number (Inter-connector): 40000308
• Part Number (Brine Seal): 40000309

Notes on Dimensions and Configuration:

• Each membrane element is supplied with one brine seal, one interconnector (coupler), and four o-rings.
• All RE8040 elements fit nominal 8.0 inch (201 mm) I.D. pressure vessels.
• The RE8040-FL440 element can also be made with a 1.5 inch (38mm) diameter central pipe.

General Handling Procedures

• Elements must be kept dry at room temperature (7–32°C; 40–95°F) and away from direct sunlight.
• If the polyethylene packaging bag is damaged, a new preservative solution (sodium bisulfite) must be added, and the bag sealed to prevent drying and biological growth.
• Permeate produced during the first hour of operation should be discarded to flush out the preservative solution.
• Elements should be immersed in a preservative solution during storage, shipping, and system shutdowns to prevent biological growth and freezing.
• A standard storage solution contains 1% by weight sodium bisulfite or food-grade sodium metabisulfite. For short-term storage (one week or less), 1% by weight sodium metabisulfite solution is adequate.
• Keep elements moist at all times after initial wetting.
• Avoid excessive pressure and flow spikes.
• Only use chemicals compatible with the membrane elements and components, as incompatible chemicals may void the limited warranty.
• Permeate pressure must always be equal to or less than the feed/concentrate pressure. Damage from permeate back pressure voids the element's limited 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 data, please refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet