Marksman DFN Series Filter Elements

The Marksman DFN Glass Fiber Filter Elements are used in the following industries – 

Materials of construction

 

Filter media: Borosilicate micro fiberglass with acrylic binder

Hardware: Polypropylene end caps and outer netting

Support material: Spunbonded polyester

Gaskets: EPDM, fluorocarbon elastomer, nitrile

Sealing: Thermal bond

 

Dimensions (nominal)

 

Outside flange diameter: Five flange options are available . Contact Pall for information on sizes.

Outside filter diameter: 15.2 cm (6 in.)

Lengths: Size 1, Size 2, Size 4 - 101.6 cm (40 in.)

 

Performance Specifications:

 

Filter grades

1.5, 3, 10, 20, 40 micron (µm)

 

Maximum operating differential pressure

• to 2.9 bard @ 20°C (42 psid @ 68°F)
• to 1.0 bard @ 79°C (15 psid @ 175°F)

 

NOTE: Stainless steel flange is recommended for temperatures in excess of 43 °C (110 °F).

 

Recommended change-out differential pressure¹

2.4 bard @ up to 54°C (35 psid @ up to 130°F)

 

Particle Removal Ratings² (µm)

 

Cartridge Designation	90% Efficiency	≥ 99.9% Efficiency
DFNM 1.5	0.9	1.6
DFNM 3	1	1.9
DFNM 10	2.8	9.3
DFNM 20	9.5	17
DFNM 40	17	37

 

Typical Flow 

 

Filter Grade	mbard/lpm (psid/gpm) Water @ 20 °C (68 °F)
	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

NOTE: For kPa, multiply mbard/lpm by 0.1.

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

² Marksman DFN series filter cartridge retention ratings are based on Pall’s Dynamic Efficiency test protocol. This single-pass, destructive challenge test is based on ASTM F-795 test procedures for determining the performance of a filter medium. Fine test dust is used as the test contaminant for filters in the 1 to 20 micron range. Coarse test dust is used for micron ratings above 20 microns. Additional information can be obtained by contacting Pall Corporation.

Pall Part Number = DFNM [1] [2] – [3] U [4] – [5] [6]

 

Table 1

Code	Length option
Blank	Standard

 

Table 2

Code	Filter grades (µm)
1.5	1.5
3	3
10	10
20	20
40	40

 

Table 3

Code	Cartridge lengths nominal
1	Size 1 bag
2	Size 2 bag
4	101.6 cm (40 in.)

 

Table 4

Code	Gasket materials
Blank	For NF version
N	Nitrile
E	EPDM (peroxide cured)
V	Fluorocarbon elastomer

 

Table 5

Code	End configurations
PF	Plastic self-adjusting flange
SF	Stainless steel self-adjusting flange (required for temperatures >43 °C/110 °F)
NF	No flange (for use with reusable SS flange)

 

Table 6

Code	Flange/gasket styles3
A	Pall Marksman Series vessels, Rosedale4, Strainrite, Krystil Klear5
B	FSI BFNP Series vessels (side entry), GAF6
C	FSI FSPN Series vessels (prior to June 2012), Hayward7 over the top
F	FSI FSPN Series vessels (from June 2012)
CB	FSI CBFP Series vessels8

³ Pall Marksman "Fit-up" kits are available to help select the best sealing flange/gasket style. Contact your Pall representative for more information.

⁴ Rosedale is a registered trademark of Rosedale Products, Inc.

⁵ Krystil Klear is a registered trademark of Pentair Water Filtration.

⁶ GAF is a registered trademark of GAF Corporation.

⁷ Hayward is a registered trademark of Hayward Industrial Products, Inc.

⁸ Installation of Marksman cartridge with CB flange requires an additional housing hold down plate as follows:

Part Number	Description
ERA286666C	CBFP 11/12 Hold-Down Plate, Stainless Steel, 2” Inlet
ERA286667C	CBFP 11/12 Hold-Down Plate, Stainless Steel, 3” Inlet

Q. 1. Do the Marksman DFN Series Filters require any hardware changes?

- The Marksman DFN Series Filters can fit most Size 1 and Size 2 bag vessels with no hardware changes.

 

Q. 2. What are the filter grade options available for Marksman DFN Series Filter Elements?

- The Marksman DFN Series Filter Elements are available in 1.5, 3, 10, 20, and 40 micron (µm) ratings. 

 

Q. 3. Can I use the Marksman DFN Series Filter Elements for carbon fiber production?

- Yes, the Marksman DFN Series Filters are ideal for carbon fiber production.