CSM RE4040-BLF

Summary

Product identification

The RE4040-BLF is an ultra-low pressure grade reverse osmosis (RO) element designed for low Total Dissolved Solids (TDS) water. It is suitable for both Industrial and Municipal applications. The product is certified to NSF/ANSI/CAN 61.

General Features

• Permeate Flow Rate: 2,500 GPD (9.5 m³/day)
• Nominal Salt Rejection: 99.2% (Minimum 99.0%)
• Effective Membrane Area: 85 ft² (7.9 m²)
• Membrane Type: Thin-Film Composite
• Membrane Material: Polyamide (PA)
• Element Configuration: Spiral-Wound, FRP Wrapping
• Key Feature: Ultra-Low-Energy Consumption

Test Conditions

Performance is measured under the following conditions:

• NaCl solution: 500 mg/L
• Applied pressure: 100 psig (0.69 MPa)
• Recovery: 15%
• Temperature: 77°F (25°C)
• pH: 6.5–7.0
• Permeate flow rate for each element may vary +25 / -15%.

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: 18 gpm (4.09 m³/hr)
• Min. Concentrate Flow Rate: 4 gpm (0.91 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

Mechanical / Hydraulic

• Model Name: RE4040-BLF
• Dimensions:
  • A: 40.0 inch (1,016 mm)
  • B: 3.9 inch (99.0 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): SWA01046
• Each membrane element is supplied with one interconnector (coupler) and four O-rings.
• All RE4040 elements fit nominal 4.0 inch (101.6 mm) I.D. pressure vessels.
• The element shell is FRP (Fiber Reinforced Plastic).

General Handling Procedures

• Elements must be kept dry at room temperature (7–32°C; 40–95°F) and not stored in direct sunlight.
• For WET-TYPE elements, a preservative solution (1% sodium metabisulfite solution) is added to prohibit microbial 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. Use of incompatible 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.
• Be aware of glass fiber strands from the FRP element shell 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. Contractual data for any project must match the OEM PDF revision specified for that project.

Official datasheet (PDF)

PDF datasheet