Marksman™ DFN Series Filter Elements

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 diameters 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.)

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 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	1.0	1.9
DFNM 10	2.8	9.3
DFNM 20	9.5	17.0
DFNM 40	17.0	37.0

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 micron. Additional information can be obtained by contacting Pall Corporation.

Large Format Filters

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 vessels

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.

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