CSM RE2540-BLR

Summary

Product identification

The RE2540-BLR is a low-pressure grade reverse osmosis (RO) element designed for brackish water.

Key Features

• Low-Energy Consumption
• High Permeate Flow and High Rejection

Specifications

Performance specifications are based on the following test conditions:

• Feed Solution: 1,500 mg/L NaCl solution

• Applied Pressure: 150 psig (1.03 MPa)

• Recovery: 15%

• Temperature: 77℉ (25℃)

• pH: 6.5–7.0

• Permeate flow rate for each element may vary but will be no more than -5%.

• Permeate Flow Rate: 740 GPD (2.8 m³/day)

• Nominal Salt Rejection: 99.4% (Minimum 99.0%)

• Effective Membrane Area: 27 ft² (2.5 m²)

• Membrane Type: Thin-Film Composite

• Membrane Material: Polyamide (PA)

• Element Configuration: Spiral-Wound, FRP Wrapping

Dimensions

For model RE2540-BLR:

• A: 40.0 inch (1,016 mm)
• B: 2.4 inch (60.8 mm)
• C: 0.75 inch (19.1 mm)
• D/E: 1.05 inch (26.7 mm)
• Part Number (Inter-Connector): SWA01050
• Part Number (Brine Seal): SWA01047

Each membrane element is supplied with one interconnector (coupler) and four O-rings. All RE2540 elements fit nominal 2.5 inch (63.5 mm) I.D. pressure vessels.

Operating limits

• Max. Pressure Drop / Element: 15 psi (0.10 MPa)
• Max. Pressure Drop / 240” Vessel: 60 psi (0.41 MPa)
• Max. Operating Pressure: 600 psi (4.14 MPa)
• Max. Feed Flow Rate: 6 gpm (1.36 m³/hr)
• Min. Concentrate Flow Rate: 1 gpm (0.23 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

Handling and Storage

• Elements must be kept dry at room temperature (7–32°C; 40–95°F) and should not be stored in direct sunlight.
• For wet-type elements, a preservative solution (1% sodium metabisulfite solution) is added to inhibit microorganism growth.
• Permeate from the first hour of operation should be discarded.
• Stabilized salt rejection is generally achieved within 1–48 hours of continuous use.
• 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 caused by permeate back pressure voids the limited warranty.
• The element shell is FRP (Fiber Reinforced Plastic). Be aware of glass fiber strands and use safety equipment.

---

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

Official datasheet (PDF)

PDF datasheet