DFT-Classic Filter Cartridges

Summary

Product identification

DFT Classic® Series Filter Cartridges offer reliable, consistent filtration performance with a graded pore structure for efficient removal of a wide range of particle sizes. They are designed for long service life, provide diverse removal ratings, wide chemical compatibility, and high contaminant-holding capacity. These cartridges fit most standard housings and are manufactured under an ISO 9001 quality system.

The cartridges are suitable for both liquid and gas filtration.

Performance Specifications

• Filter Grades: 0.5, 1, 2, 3, 5, 7, 10, 15, 20, 25, 30, 40, 50, 75, 100, 150, 200, 250, 300, 350 µm

Product Specifications

Materials of Construction

• Filter Media: Bleached FDA-listed cotton, standard cotton, natural cotton, glass fiber, heat purified glass fiber, FDA-listed polypropylene, standard polypropylene, rayon, polyester, nylon, acrylic, polyphenylene sulfide (PPS).
• Center Core: Polypropylene, Electrolytic Tin Plated steel (ETP), 304 stainless steel, 316 stainless steel.
• Core Cover Option: Polypropylene, nylon, fiberglass, and polyester (used to control fiber migration).
• End Treatment Option: Compatible with existing fiber material (for additional fiber migration control).

Dimensions (nominal)

• Outside Diameter: 2" (5.1 cm), 2 3⁄8" (6.0 cm), 2 1⁄2" (6.4 cm), 2 5⁄8" (6.7 cm) optional
• Inside Diameter: 1" (2.5 cm)
• Lengths: 9 3⁄4" (24.8 cm), 10" (25.4 cm), 19 1⁄2" (49.5 cm), 20" (50.8 cm), 29 1⁄2" (74.9 cm), 30" (76.2 cm), 39" (99.1 cm), 39 1⁄2" (100.3 cm), 40" (102 cm), 49 1⁄2" (125.7 cm), 50" (127 cm)

Operating limits

Maximum Temperature Rating

• With metal core:
  • Premium Cotton: 300°F (149°C)
  • Premium Polypropylene: 200°F (93°C)
  • Rayon: 300°F (149°C)
  • Polyester: 250°F (121°C)
  • Glass Fiber: 750°F (399°C)
  • PPS: 375°F (191°C)
  • Nylon: 250°F (121°C)
  • Acrylic: 200°F (93°C)
• With polypropylene core: 140°F (60°C) for all listed filter media.

Chemical Compatibility

The cartridges offer varied compatibility with chemicals including Potable Liquids, Water, Organic Solvents, Oils, Organic Acids, Alkalies, Oxidizing Agents, Steam (Non-Continuous), Strong Inorganic Acids, Dilute Inorganic Acids, and resistance to Microorganisms. Compatibility ratings (Excellent, Good, Fair, Poor, Not Recommended) vary significantly by filter medium. See the official PDF for exact tabulated values for specific material/chemical pairings.

Typical Applications

• Chemicals: Polishing of chemical solutions, bulk industrial chemicals, solvents, acids, bases, monomers, process and cooling water.
• Magnetic Coatings: Audio, video & computer tape, floppy discs, computer hard discs, solvents.
• Photographic: Photo emulsions, chemicals, wash & rinse water.
• Food & Beverage: Edible oils, spice oils.
• Oil Production: Well completion fluids, water flood.
• Air & Gas: Compressed air, instrument air, most gases including nitrogen, hydrogen, helium, freon, most corrosive gases.
• Other: Solution mining, deep well disposal, paint, ink & coatings, lubricating oils, electropolishing solutions, plating solutions, pigments & dyes, cleaning fluids, adhesives.

Ordering Information

Part numbers are generated based on a structured code that includes selections for Filter Grade, Filter Medium, Type of Service (Liquid/Gas), Outside Diameter, Cartridge Length, Core Material, Core Cover, End Treatment, Integrally Wound option, Extended Core, and Packaging. For a full breakdown of all available codes and their corresponding options, refer to the official PDF.

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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 must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror