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3M™ DF Series Filter Cartridge

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  • Graded-porosity filter medium provides up to 4 times more life than most conventional bag filters for fewer change-outs

  • Easily retrofits standard bag filter housings

  • Reduced filter changes help minimize product loss, labor, disposal costs, and operator exposure

  • Cartridge design reduces filter medium rupture, contaminant by-pass and unloading

  • Simplifies filter installation, removal and disposal

The 3M™ DF series filter element is a proven alternative to most conventional bag filters. Our filter is a true graded porosity media structure that provides a 62% increase in surface area compared to a standard #2 bag and up to 4 times more service life.

The 3M™ DF series filter media consists of 2 layers with the first layer being "open" to remove the larger contaminants while the second layer is "tighter" to remove the smaller contaminants. Our graded porosity structure provides greater contaminant holding capacity and longer life than conventional single layer media. Compared to conventional felt filter bags, 3M DF series filter element provide up to 4 times the service life, superior contaminant reduction efficiency, enhanced flow per filter and reduced losses associated with frequent filter change-outs.

The 3M DF series filter element consists of two cylinders bonded to a top plate and a lower seal plate. As fluid enters the top of the filter through flow channels in the top plate, it flows between the inner and outer media cylinders. Then it passes through the media and support basket and into the clean chamber of the filter housing. Our design incorporates an innovative geometry of both bag filter and restrainer basket, giving complete 3-dimensional support of the media. This eliminates the potential for bag filter rupture and the resulting gross contamination of the downstream effluent. The 3M DF series filter element design reduces hold-up fluid volume by 67% compared to conventional filter bags, which helps minimize worker exposure to process fluids due to less frequent bag change-outs.


3M™ DF Series Filter Best Features

100% downstream support of the filter element

  • Eliminates filter rupture, contaminant bypass and unloading
  • Allows operation to higher differential pressures before filter change-out

Superior flow characteristics

  • Maximizes utilization of filter surface area and maintains low operating pressure drop
  • Reduces flow per unit area (flux) for improved effluent quality

Greater media surface area

  • Achieves up to four times the service life as compared to conventional filter bags
  • Improves the retention efficiency of the bag filter

Greater contaminant holding capacity

  • Media layers of different porosities are combined to form a graded porosity structure
  • Each nominally rated filter medium has been optimized to achieve the longest service life

We use advanced thermal sealing processes to weld the side seams to form the bag and secure the sealing ring. Thermal-singe treatment of the exterior surface prevents material fibers from migrating into the clean filtered process media. Each grade of the 3M™ DF series filter element is manufactured from high performance fibers that are selected, based on extensive media performance testing. No adhesives, binders or silicone are used in the manufacturing processes.

Applications include

  1. Industrial waters
  2. Lubricants
  3. Chemicals
  4. Petrochemicals
  5. Food
  6. Wine filtration
  7. Beer micro filtration
  8. Process Water
  9. Pharmaceuticals
  10. Electronics
  11. Purification
  12. Water Treatment





Amine Sweetening, Water Injection for Enhanced Oil Recovery, Process Cooling Water, Completion & Workover Fluids, Hydrotreater Feed, Water Filtration for Beer Applications, RO Protection and Prefiltration, Particle Reduction in Bottle Water Manufacturing, Particle Reduction in Distilled Spirits Filtration, Final Filtration for Particulates in Soft Drinks, Turbidity and Particle Control in Soft Drink Water, Water Filtration for Wine Applications, Process Water Filtration, Raw Material, Intermediates, & Feed Stream Filtration, Resin Filtration, Electrodeposition Paint Filtration, Pretreatment, Electrodeposition Paint, Trade Paint Filtration.



Collar Diameter (Imperial)

7.205 in, 7 in

Collar Diameter (Metric)

18.3 cm, 17.8 cm

Component and Assembly Materials

Polyester, Polypropylene

Effective Filtration Area

3.4 ft², 6.7 ft², 3.4 m, 6.7 m

End Configuration

Closed (Standard Bag Housings)

End Modification

Closed (for standard bag housing),Open (for 3M DF series housing),Open (for 3M DF Series housing)

Factory ISO Certification

No ISO Certification information available

Filter Material

Polyester, Polypropylene

Filter Technology


Filter Type


Flow Rate (Imperial)

150.0 GPM,75.0 GPM

Flow Rate (Metric)

283.906 Liter per Minute, 568 Liter per Minute, 567.812 Liter per Minute, 284 Liter per Minute


Graded porosity

Gasket/O-ring Material

Polyester, Polypropylene


50 micron, 5 Micron, 1 Micron, 25 micron, 100 Micron, 10 micron, 200 Micron



Maximum Operating Temperature

149 ℃, 82 ℃, 80 ℃

Maximum Operating Temperature

300 ℉, 180 ℉, 176 ℉

Micron Rating

50 μm, 5 μm, 1 Absolute, @ 95%, 25 μm, 10 μm, 100 μm, 200 μm, 1 μm

Pressure Range (Imperial)

Recommended Change-out at 20 psid

Pressure Range (Metric)

Recommended Change-out at 1.4 bar

Product Series



3M™ DF Series

Units per Case



Dimensions and Classifications

Overall Diameter (Imperial)

7 in

Overall Diameter (Metric)

17.8 cm

Overall Length (Imperial)

14.291 in, 32 in, 16 in, 14.3 in, 27.8 in, 27.795 in

Overall Length (Metric)

36.3 cm, 81.28 cm, 40.64 cm, 70.6 cm









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Application Guides (1)
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