EXF Series 4 x 28

Summary

Product identification

The 3M™ Liqui-Cel™ EXF-4x28 Series Membrane Contactor is an Extra-Flow cartridge with a Center Baffle configuration.

• Membrane Type:
  • X50: Recommended for CO₂ removal from water.
  • X40: Recommended for all other gas transfer applications.
• Membrane/Potting Material: Polypropylene / Polyethylene

Operating limits

• Liquid Flow Guidelines: 0.9 – 6.8 m³/hr (4 – 30 gpm)
• Maximum Shellside Liquid Working Temperature/Pressure:
  • PP X50 or X40 Housing:
    • 5-30°C (41-86°F): 7.2 barg (105 psig)
    • 40°C (104°F): 5.2 barg (75 psig)
  • 316L SS X50 Housing:
    • 5-50°C (41-122°F): 7.2 barg (105 psig)
    • 70°C (158°F): 2.1 barg (30 psig)
  • 316L SS X40 Housing:
    • 5-50°C (41-122°F): 9.3 barg (135 psig)
    • 70°C (158°F): 2.1 barg (30 psig)
  • Note: If no vacuum is used, 1 barg (15 psig) can be added to the pressures above.
• Maximum Applied Gas Pressure:
  • 4.1 barg at 25°C (60 psig at 77°F)
  • 6.2 barg at 25°C (90 psig at 77°F)
  • Note: This is for integrity testing at ambient temperatures; normal operating pressures are typically lower.
• General Operating Principle: Liquid pressure should always exceed gas pressure.
• Performance Characteristics: Curves for dissolved oxygen (O₂) removal with X40 membrane and free CO₂ removal with X50 membrane, as well as pressure drop, are available in the full PDF.
  • Test condition O₂ Removal (X40 membrane, 20°C): N₂-vacuum combo mode, vacuum: 50 mm Hg; N₂ sweep flow: 1.4 L/min (0.05 scfm). Vacuum mode: 50 mm Hg.
  • Test condition CO₂ Removal (X50 membrane, 20°C): Air-vacuum combo mode, air sweep: 4 G/L, vacuum: 150 mm Hg.

Mechanical / hydraulic

• Nominal Dimensions (Polypropylene housing):
  • Overall Length: 889 mm (35.0 in)
  • Diameter (main): 116 mm (4.6 in)
  • Diameter (end): 85 mm (3.3 in)
  • Body Length: 789 mm (31.1 in)
• Priming Volume (approximate):
  • Shellside (X40 or X50):
    • PP housing: 4.2 L (1.1 gal)
    • SS housing: 3.0 L (0.8 gal)
  • Lumenside X50:
    • PP housing: 1.3 L (0.4 gal)
    • SS housing: 1.0 L (0.3 gal)
  • Lumenside X40:
    • PP housing: 1.1 L (0.3 gal)
    • SS housing: 0.9 L (0.2 gal)
• Approximate Weight (cartridge and housing):
  • Dry:
    • PP: 4 kg (9 lbs)
    • 316L SS: 7 kg (15 lbs)
  • Water-filled (shellside):
    • PP: 7 kg (15 lbs)
    • 316L SS: 10 kg (21 lbs)
  • Cartridge only – dry:
    • X50: 1 kg (2 lbs)
    • X40: 1 kg (3 lbs)
• Housing Options and Characteristics:
  • Material: Polypropylene, 316L SS (Surface Finish ≤ 0.8μm SI / 32 RA)
  • Flange Connections (Shellside - Liquid Inlet/Outlet):
    • 1 inch Sanitary
    • ¾ inch NPT Female
    • 1 inch George Fisher
    • Rc ¾ per JIS B0203
  • Flange Connections (Lumenside - gas/vacuum):
    • 1 inch 90° Sanitary
    • ¾ inch 90° NPT Female
    • Rc ¾ per JIS B0203
    • 1 inch Sanitary
• Seal Options:
  • Viton: General Purpose
  • K - UPW: Ultra Pure Water
  • K - EXT: Chemical Extraction
  • Buna-N: Beverage

Regulatory

• Complies with the limits as set by RoHS Directive 2011/65/EU Annex II; recasting 2002/95/EC.
• Constructed of FDA CFR title 21 compliant materials for wetted parts only at ambient temperatures.

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

Official datasheet (PDF)

PDF datasheet