Nexis A Filter Elements

Summary

Product identification

Pall Nexis® A Series Filter Cartridges are depth filters designed with proprietary CoLD Melt™ fiber technology. They feature micro-denier melt blown filtration fibers and a continuous gradient pore structure. The construction is all-polypropylene, free of adhesives, binders, resins, and silicone. A proprietary center core is included for added strength in 0.5 - 20 µm grades.

• Filter grades: 0.5, 1, 3, 5, 10, 20, 30, 40, 50, 70, 90, 120 µm

• Cartridge Designations and Particle Removal Ratings (µm):

  • NXA 0.5: 99.9% Efficiency: 0.5, 90% Efficiency: <0.5
  • NXA 1: 99.9% Efficiency: 0.95, 90% Efficiency: 0.65
  • NXA 3: 99.9% Efficiency: 2.8, 90% Efficiency: 1.5
  • NXA 5: 99.9% Efficiency: 4.1, 90% Efficiency: 3.4
  • NXA 10: 99.9% Efficiency: 9.5, 90% Efficiency: 4.7
  • NXA 20: 99.9% Efficiency: 18.5, 90% Efficiency: 13
  • NXA 30: 99.9% Efficiency: 27, 90% Efficiency: 18
  • NXA 40: 99.9% Efficiency: 36, 90% Efficiency: 20
  • NXA 50: 99.9% Efficiency: 46, 90% Efficiency: 27
  • NXA 70: 99.9% Efficiency: 65, 90% Efficiency: 42
  • NXA 90: 99.9% Efficiency: 85, 90% Efficiency: 55
  • NXA 120: 99.9% Efficiency: 105, 90% Efficiency: 65

• Ordering Information - Cartridge lengths (nominal):

  • 4: 10.2 cm / 4 in
  • 5: 12.7 cm / 5 in
  • 9.75: 24.8 cm / 9.75 in
  • 9.875: 25.1 cm / 9.875 in
  • 10: 25.4 cm / 10 in
  • 19.5: 49.5 cm / 19.5 in
  • 20: 50.8 cm / 20 in
  • 29.25: 74.3 cm / 29.25 in
  • 30: 76.2 cm / 30 in
  • 39: 99.1 cm / 39 in
  • 39.5: 100.3 cm / 39.5 in
  • 40: 102 cm / 40 in

• Ordering Information - End configurations:

  • Blank: DOE industrial (no end caps)
  • 1X: DOE, 2.54 cm (1 in) extended core
  • M3: SOE flat closed end, external 222 O-rings
  • M3H: SOE large diameter closed end, external 222 O-rings
  • M4: SOE fin end, external 222 O-rings with locking tabs (silicone and EPDM O-rings only)
  • M5: DOE, internal 120 O-rings
  • M6: SOE flat closed end, external 226 O-rings
  • M7: SOE fin end, external 226 O-rings
  • M8: SOE fin end, external 222 O-rings
  • M10: DOE, internal O-rings
  • M11: SOE flat closed end, internal 120 O-ring
  • M18: SOE flat closed end, external 222 O-ring
  • M20: SOE with internal O-rings, closed end with deep recess
  • DOE: DOE with elastomer gasket seals and end caps
  • H21: DOE, Santoprene gasket seal
  • XK: SOE plastic spring assembly, saw cut end
  • SI: SOE metal spring/polypropylene cap, saw cut end

• Ordering Information - Gasket/O-ring materials:

  • S: Silicone
  • N: Nitrile
  • E: EPDM
  • V: Fluorocarbon elastomer
  • T: Expanded PTFE (gaskets), FEP encapsulated silicone (O-rings)
  • F: FEP encapsulated fluorocarbon elastomer (O-rings)
  • Y: Santoprene

Operating limits

• Maximum differential pressure:
  • 0.5-20 µm:
    • 1.03 bard @ 82°C (15 psid @ 180°F)
    • 1.72 bard @ 66°C (25 psid @ 150°F)
    • 4.14 bard @ 30°C (60 psid @ 86°F)
  • 30-120 µm:
    • 1.72 bard @ 60°C (25 psid @ 140°F)
    • 3.45 bard @ ambient (50 psid @ ambient)
• Recommended change-out differential pressure: 2.4 bard (35 psid)
• Autoclaving: Single-open-end Nexis A series filter cartridges can be autoclaved for 30 minutes at 121°C (250˚F) under no end load conditions. Filter cartridges should be allowed to cool to normal system operating temperatures prior to use.
• Steam sterilization: Not recommended.

Product water

• Efficiency: Rated at >99.9% efficiency (retention rating by ASTM F-795 test).
• Rinse-up: Fast rinse-up to 18 Megohm-cm with a minimum of throughput.

Mechanical / hydraulic

• Materials of construction:
  • Filter media: Polypropylene
  • Hardware: Polypropylene
  • Gaskets/O-rings: Silicone elastomer, EPDM, nitrile, fluorocarbon elastomer, Santoprene (DOE only), FEP, FEP encapsulated silicone, FEP encapsulated fluorocarbon elastomer
• Dimensions (nominal):
  • Outside diameter: 6.4 cm (2.5 in)
  • Lengths: 10.2 cm (4 in), 12.7 cm (5 in), 24.8 cm (9.75 in), 25.1 cm (9.875 in), 25.4 cm (10 in), 49.5 cm (19.5 in), 50.8 cm (20 in), 74.3 cm (29.25 in), 76.2 cm (30 in), 99.1 cm (39 in), 100.3 cm (39.5 in), 102 cm (40 in)
• Typical Flow vs. Differential Pressure: Graphs illustrating flow rate versus differential pressure for various filter grades are provided in the source document. See the official PDF for exact tabulated values.

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Disclaimer: This summary is based solely on the provided text extract. It may not include all figures, footnotes, or revisions present in the full OEM PDF datasheet. For contractual data, please refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror