Datasheet summary
Marksman DFN Filter Elements
Engineering summary from PDF text extraction for Marksman DFN Filter Elements. Verify every value with the OEM datasheet.
Summary
Product identification
The Marksman™ DFN Series are High Capacity Pleated Glass Filter Elements designed for demanding applications. Key features include:
- New, larger cartridge geometry
- High flow capacity
- Inside-out flow that traps contaminant inside the element
- Available to fit most Size 1 and Size 2 bag housings with no hardware changes
- Available in 101.6 cm (40 in) for use in unique 101.6 cm (40 in) Marksman housings
- Unique sealing device adjusts to fit in most bag filter housings
- High surface area for long service life
- Micro-fiberglass Duo-Fine® media (with acrylic binder)
- Polypropylene end caps, polyester support, and outer netting
- Wide chemical compatibility
- Short length option to accommodate shorter baskets
Performance Specifications
- Filter grades: 1.5, 3, 10, 20, 40 µm
- Maximum operating differential pressure:
- to 2.9 bar @ 20°C (42 psid @ 68°F)
- to 1.0 bar @ 79°C (15 psid @ 175°F)
- Recommended change-out differential pressure: 2.4 bar @ up to 54°C (35 psid @ up to 130°F)
Particle Removal Ratings (µm)
| Cartridge Designation | 90% Efficiency | ≥99.9% Efficiency |
|---|---|---|
| DFNM 1.5 | 0.9 | 1.6 |
| DFNM 3 | 1.0 | 1.9 |
| DFNM 10 | 2.8 | 9.3 |
| DFNM 20 | 9.5 | 17.0 |
| DFNM 40 | 17.0 | 37.0 |
Typical Flow (mbard/lpm, psid/gpm) for Water @ 20°C (68°F)
| Filter Grade | Size 1 | Size 2 | 40 in |
|---|---|---|---|
| 1.5 | 0.21 (0.011) | 0.09 (0.005) | 0.05 (0.003) |
| 3 | 0.09 (0.005) | 0.04 (0.002) | 0.02 (0.001) |
| 10 | 0.06 (0.003) | 0.03 (0.001) | 0.02 (0.001) |
| 20 | 0.04 (0.002) | 0.02 (0.001) | 0.02 (0.001) |
| 40 | 0.04 (0.002) | 0.02 (0.001) | 0.02 (0.001) |
Product Specifications
Materials of construction
- Filter media: Borosilicate micro fiberglass with acrylic binder
- Hardware: Polypropylene end caps, Polyester outer netting
- Support material: Spunbonded polyester
- Gaskets: EPDM, fluorocarbon elastomer, nitrile
- Sealing: Thermal bond
Mechanical / hydraulic
Dimensions (nominal)
- Outside flange diameter: Three diameters are available; contact Pall for information on sizes.
- Outside filter diameter: 15.2 cm (6 in)
- Lengths:
- Size 1 - Standard, Short
- Size 2 - Standard, Short, Extra Short
- Size 4 - 101.6 cm (40 in)
Operating limits
For temperatures in excess of 43°C (110°F), a stainless steel flange is recommended.
Ordering Information
The Pall Part Number (DFNM) can be configured with options for:
- Cartridge lengths (Size 1 bag, Size 2 bag, 101.6 cm (40 in))
- Short length options (Standard, Short, Extra short for Size 2 only)
- Filter grades (1.5, 3, 10, 20, 40 µm)
- Gasket materials (Nitrile, EPDM, Fluorocarbon elastomer)
- End configurations (Plastic self-adjusting flange, Stainless steel self-adjusting flange, No flange)
- Flange/gasket styles to fit various housing types (e.g., Rosedale, Strainrite, GAF, FSI, Hayward)
Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. The data for contractual agreements must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.