Duo-Fine E Filter Cartridges

Summary

Product identification

Pall DUO-FINE® E Series Filter Cartridges are high-capacity pleated filter cartridges featuring microfiberglass media.

Key features:

• Unique Microfiberglass Media Provides Exceptional Dirt Holding Capacity For Longer Service Life
• 304 Stainless Steel Center Core and End Caps Available for High Temperature Applications
• Small Diameter Fibers Ensure High Flow Rates at Low Pressure Drops
• Economical Alternative to Stringwound Cartridges
• Available in Retention Ratings of 0.2 to 50 µm
• Protective Netting is Color-Coded for Easy Identification of Micron Ratings
• End Configurations to Fit Most Housings
• Core Material Options for Different Temperature Compatibility

Operating limits

• Filter Grade (90% Retention Rating by ASTM F-795 Test): 0.2, 0.45, 1, 3, 10, 30, 50 µm (nominally rated)
• Recommended Change Out Differential Pressure¹: 35 psid (2.4 bard)
• Maximum Differential Pressure:
  • Polypropylene Hardware:
    • 75 psid (5.2 bard) @ 68˚F (20˚C)
    • 40 psid (2.8 bard) @ 150˚F (65˚C)
  • 304 Stainless Steel Hardware:
    • 75 psid (5.1 bard) @ 250˚F (121˚C)
• Sterilization:
  • All Duo-Fine E Series cartridges may be autoclaved for 30 minutes at 250˚F (121˚C) under no end load conditions.
  • Cartridges with 304 stainless steel core and end caps may be steamed in-line at 250°F (121˚C) for up to one hour. Do not reverse flow under steam conditions, damage to the filter may occur.

¹ Provided that the maximum differential pressure is not exceeded based on temperature limits defined above.

Materials of Construction

• Filter Media:
  • 50 µm: Spunbonded Polyester
  • All Other Grades: Borosilicate Microfiberglass with Acrylic Binder
• Support Material: Spunbonded Polyester
• Netting: Polypropylene
• Hardware: Polypropylene or 304 Stainless Steel²
• Sealing: Thermal Bond
• Gaskets/O-rings: Silicone Elastomer, Buna N, Viton A, Nordel, FEP Encapsulated Silicone, Expanded PTFE, White Buna N, White Silicone

² 304 stainless steel end caps are epoxy bonded.

Dimensions (nominal)

• Outside Diameter: 2 3⁄5" (6.6 cm)
• Lengths: 4" (10.2 cm), 9 3⁄4" (24.8 cm), 10" (25.4 cm), 19 1⁄2" (49.5 cm), 20" (50.8 cm), 29 1⁄4" (74.3 cm), 30" (76.2 cm), 39" (99.1 cm), 40" (102 cm)

Performance Specifications

Color Code Chart For Duo-Fine E Series

• Green: 0.2 Micron Rating
• Yellow: 0.45 Micron Rating
• White: 1 Micron Rating
• Blue: 3 Micron Rating
• Red: 10 Micron Rating
• Purple: 30 Micron Rating
• Orange: 50 Micron Rating

Particle Retention (µm)

The removal rating of any filtration device will depend on the conditions of use, fluid nature, viscosity, flow rate, contaminant type, and temperature. The DOP test measures the filter's ability to capture fine droplets in air or gas, representing removal efficiencies with respect to an aerosol dispersion of 0.3 µm Dioctyl Phthalate (DOP) particles.

Mechanical / hydraulic

A graph illustrates typical flow vs. differential pressure for various micron ratings (0.2 µm, 0.45 µm, 1 µm, 3 µm, 10 µm, 30 µm, 50 µm) and a typical 3 µm depth cartridge. The x-axis shows flow rate in gpm (gpm, Water at 68°F (20°C)) and lpm, while the y-axis shows differential pressure in psid and Bar (x100 = kPa). Flow rate is per 10" (25.4 cm) cartridge. For liquids other than water, multiply differential pressure by fluid viscosity (cP). See the official PDF for exact graphical values.

Part Numbers/Ordering Information

The part number uses the format DFN I – G T N – M Q – 3.

Filter Grades (I):

• 0.2: 0.2 µm
• 0.45: 0.45 µm
• 1: 1 µm
• 3: 3 µm
• 10: 10 µm
• 30: 30 µm
• 50: 50 µm

Cartridge Lengths (G, nominal):

• 4: 4"
• 9.75: 9.75"
• 10: 10"
• 19.5: 19.5"
• 20: 20"
• 29.25: 29.25"
• 30: 30"
• 39: 39"
• 40: 40"

Core Materials (T):

• U: Polypropylene
• A: 304 Stainless Steel

Gasket/O-ring Materials (N):

• S: Silicone
• N: Buna N
• E: Nordel
• V: Viton A
• T: FEP Encapsulated Silicone (O-rings)
• M: White Silicone
• W: White Buna N (gaskets)
• X: No O-ring required (M2 style only)
• T: Expanded PTFE (gaskets)

End Configurations (M):

• Blank: DOE with elastomer gasket seals & end caps
• 1X: DOE, 1" (2.54 cm) extended core
• M2: SOE flat closed end, fits housings with 020 O-ring post (polypropylene hardware only)
• M3: SOE flat closed end, external 222 O-rings (retrofits other manufacturers’ Code 0) (polypropylene hardware only)
• M5: DOE internal 120 O-rings (retrofits 213 O-ring style) (polypropylene hardware only)
• M6: SOE flat closed end, external 226 O-rings (retrofits other manufacturers’ Code 6) (polypropylene hardware only)
• M7: SOE fin end, external 226 O-rings (retrofits other manufacturers’ Code 7) (polypropylene hardware only)
• M8: SOE fin end, external 222 O-rings (retrofits other manufacturers’ Code 5) (polypropylene hardware only)
• M10: DOE, internal O-rings (fits other manufacturers’ housings) (polypropylene hardware only)
• M11: SOE flat closed end, internal 120 O-ring (retrofits other manufacturers’ X style) (polypropylene hardware only)

Packaging (3):

• Blank: Standard Packaging
• -BLK: Bulk Packaging

Bubble Test Option (Q):

• Blank: Sample Bubble Tested
• B: 100% Bubble Test

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

Official datasheet (PDF)

Lenntech datasheet mirror