CSM RE2540-BLF

Summary

Product identification

The RE2540-BLF is an ultra-low pressure grade reverse osmosis (RO) element designed for low total dissolved solids (TDS) water applications.

• Membrane Type: Thin-Film Composite
• Membrane Material: Polyamide (PA)
• Element Configuration: Spiral-Wound, FRP Wrapping

Test Conditions

Performance data is based on the following test conditions:

• Feed Solution: 500 mg/L NaCl
• Applied Pressure: 100 psig (0.69 MPa)
• Recovery: 15%
• Temperature: 77℉ (25℃)
• pH: 6.5–7.0
• Permeate flow rate for each element may vary +25 / -25%.

General Features

• Ultra-Low-Energy Consumption

Product water

• Permeate Flow Rate: 930 GPD (3.5 m³/day)
• Nominal Salt Rejection: 99.2% (Minimum 99.0%)

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℉ (45℃)
• 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

Mechanical / hydraulic

• Effective Membrane Area: 27 ft² (2.5 m²)
• Model Name: RE2540-BLF
  • A (Length): 40.0 inch (1,016 mm)
  • B (Diameter): 2.4 inch (60.8 mm)
  • C (Permeate Tube ID): 0.75 inch (19.1 mm)
  • D/E (Brine Seal / Inter-Connector OD): 1.05 inch (26.7 mm)
• 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.

General Handling Procedures

• Elements contained in the boxes 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, the preservative solution (1% sodium metabisulfite solution) is added to prohibit the growth of micro-organisms.
• 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. Use of such chemicals may void the element limited warranty.
• Permeate pressure must always be equal to or less than the feed/concentrate pressure. Damage caused by permeate back pressure voids the element limited warranty.
• The element shell is FRP (Fiber Reinforced Plastic). Be aware of glass fiber strands and use safety equipment.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original PDF datasheet. Contractual data must always match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet