EXF Series 2.5 x 8

Summary

Product identification

The 3M™ Liqui-Cel™ EXF-2.5x8 Series Membrane Contactor is designed for gas transfer applications, primarily gas removal from liquids.

Membrane Characteristics

• Cartridge Configuration: Extra-Flow with Center Baffle
• Membrane Type:
  • X50 Fiber: Recommended for CO₂ removal from liquid and other gas transfer applications.
  • X40 Fiber: Recommended for O₂ removal from liquid and other gas transfer applications.
• Membrane/Potting Material: Polypropylene / Polyethylene
• Housing Material: Polypropylene

Seal Material Options

• Viton (General Purpose)
• K-UPW (Ultra Pure Water)
• K-EXT (Chemical Extraction, clamped version only)

Operating limits

Pressure Guidelines

• Maximum Shellside LIQUID Working Temperature/Pressure:
  • 5-40°C, 7.2 barg (41–104°F, 105 psig)
  • 70°C, 2.1 barg (158°F, 30 psig)
  • Note: If no vacuum is used, 1 barg (15 psig) can be added to pressures above.
• Maximum Applied Gas Pressure: 4.8 barg at 25°C (70 psig at 77°F) (This is for integrity testing; normal operating pressures are typically lower.)
• Maximum Lumenside Liquid Temperature/Pressure of Semibody Contactor:
  • 5°C, 6.2 barg (41°F, 90 psig)
  • 15–25°C, 4.8 barg (59–77°F, 70 psig)
  • 70°C, 1.0 barg (158°F, 15 psig)
• Note: Liquid pressure should always exceed gas pressure, including during start-up and shut-down procedures.

Mechanical / hydraulic

Dimensions

• Overall length: 254 mm (10.0 in) or 277 mm (10.9 in) depending on orientation.
• Diameter: 67 mm (2.6 in) to 77 mm (3.1 in).
• All dimensions are nominal for contactors with NPT connections. Overall length with Flaretek® connections increases.

Connections

• Shellside (Liquid Inlet/Outlet):
  • ¼ inch NPT female
  • ⅜ inch Flaretek® (nut included)
  • ½ inch Flaretek® (nut included)
• Lumenside:
  • ¼ inch NPT female

Priming Volume (approximate)

• Shellside: 0.40 L (0.11 gal)
• Lumenside: 0.15 L (0.04 gal)

Liquid Flow Guidelines

• 0.1 – 0.7 m³/hr (0.5 – 3.0 gpm)

Weight (approximate)

• Dry: 0.5 kg (1.1 lbs)
• Water-filled (shellside): 0.9 kg (2.0 lbs)

Performance Curves

The document includes graphs illustrating free CO₂ removal percentage, dissolved oxygen removal percentage, and pressure drop as functions of water flow rate (m³/hr and gpm). Test conditions for O₂ removal with X40 membrane (20°C, N₂ vacuum combo mode, N₂ sweep flow rate 0.05 scfm and 50 mm Hg vacuum, or vacuum mode at 50 mm Hg) and CO₂ removal with X50 membranes (25°C, Air-combo, vacuum 150 mm Hg, air sweep G/L 0.5) are provided. Pressure drop curves are for NPT connections; Flaretek® connections will have lower pressure drop. See the official PDF for exact tabulated values.

Regulatory

• Complies with the limits 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 extraction and may not include all figures, footnotes, or the latest revisions of the OEM PDF datasheet. For contractual data and complete product information, always refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet