String-wound Depth Filter Cartridges

A Long Service Life and High Contaminant Loading Capacity 

Pall’s string-wound depth filters are designed for advanced and efficient particulate removal performance and high contaminant holding capacity. Compared to traditional polypropylene or polyester materials, these filter cartridges use woven media yarn around the core and have high chemical, temperature, and process fluid compatibility. Available with 10+ different medium options these cartridges are also an economical low-cost choice compared to depth and pleated style filters. 

Depth Filter Cartridges
Depth Filter Cartridges
Lube and Hydraulic Pleated Filter Elements
Lube and Hydraulic Pleated Filter Elements
Pleated Depth Filter Cartridges
Pleated Depth Filter Cartridges
Pleated Filter Cartridges
Pleated Filter Cartridges
String-Wound Filter Cartridges
String-Wound Filter Cartridges

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Filter 30" Fluorodyne II 0.1µm product photo

Filter 30" Fluorodyne II 0.1µm

Product ID: AB3JSD7WH4
Unit of Measure
1/EA
Min Order Qty
1
Duo-Fine® , Filter Cartridges, Removal Rating 0.2 μm, Length 10 Inches, Nitrile, DOE with elastomer gasket seals & end caps product photo

Duo-Fine® , Filter Cartridges, Removal Rating 0.2 μm, Length 10 Inches, Nitrile, DOE with elastomer gasket seals & end caps

Product ID: DFN0210UN
Unit of Measure
30/EA
Min Order Qty
30
Removal Rating
0.2 µm
Cartridge Length (Imperial)
10 in
Cartridge Length (Metric)
254 mm
Cartridge Length (Metric)
25.4 cm
Gasket / O-Ring Material
Nitrile
End Configuration
Blank - DOE with elastomer gasket seals & end caps
See All Attributes
Duo-Fine® , Filter Cartridges, Removal Rating 0.2 μm, Length 10 Inches product photo

Duo-Fine® , Filter Cartridges, Removal Rating 0.2 μm, Length 10 Inches

Product ID: DFN0210UE
Unit of Measure
30/EA
Min Order Qty
30
Removal Rating
0.2 µm
Cartridge Length (Imperial)
10 in
Cartridge Length (Metric)
254 mm
Cartridge Length (Metric)
25.4 cm
End Configuration
Blank - DOE with elastomer gasket seals & end caps
Change Out Differential Pressure
2.4 bard
See All Attributes
Duo-Fine® , Filter Cartridges, Removal Rating 0.2 μm, Length 30 Inches, Fluorocarbon Elastomer product photo

Duo-Fine® , Filter Cartridges, Removal Rating 0.2 μm, Length 30 Inches, Fluorocarbon Elastomer

Product ID: DFN0230AV
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
0.2 µm
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
Gasket / O-Ring Material
Fluorocarbon Elastomer
End Configuration
Blank - DOE with elastomer gasket seals & end caps
See All Attributes
Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 10 Inches, silicone, SOE fin end external 226 O-rings product photo

Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 10 Inches, silicone, SOE fin end external 226 O-rings

Product ID: DFNT0210USM7
Unit of Measure
1/EA
Min Order Qty
1
Removal Rating
0.2 µm
Cartridge Length (Imperial)
10 in
Cartridge Length (Metric)
254 mm
Cartridge Length (Metric)
25.4 cm
Gasket / O-Ring Material
Silicone
End Configuration Code
M7
See All Attributes
Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 20 Inches, Nitrile product photo

Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 20 Inches, Nitrile

Product ID: DFNT0220UN
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
0.2 µm
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
Gasket / O-Ring Material
Nitrile
End Configuration
Blank - DOE with elastomer gasket seals & end caps
See All Attributes
Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 30 Inches, silicone, SOE fin end external 226 O-rings product photo

Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 30 Inches, silicone, SOE fin end external 226 O-rings

Product ID: DFNT0230USM7B334
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
0.2 µm
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
Gasket / O-Ring Material
Silicone
End Configuration Code
M7
See All Attributes
Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 30 Inches, Nitrile, SOE fin end external 226 O-rings product photo

Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 30 Inches, Nitrile, SOE fin end external 226 O-rings

Product ID: DFNT0230UNM7
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
0.2 µm
End Configuration
SOE fin end, external 226 O-rings
Change Out Differential Pressure
2.4 bard
Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 10 Inches, Nitrile, Blank - DOE with elastomer gasket seals & end caps product photo

Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 10 Inches, Nitrile, Blank - DOE with elastomer gasket seals & end caps

Product ID: DFNT0210UN
Unit of Measure
30/EA
Min Order Qty
30
Removal Rating
0.2 µm
Cartridge Length (Imperial)
10 in
Cartridge Length (Metric)
254 mm
Cartridge Length (Metric)
25.4 cm
Gasket / O-Ring Material
Nitrile
End Configuration
Blank - DOE with elastomer gasket seals & end caps
See All Attributes
Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 20 Inches, silicone, SOE fin end external 226 O-rings product photo

Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 20 Inches, silicone, SOE fin end external 226 O-rings

Product ID: DFNT0220USM7
Unit of Measure
1/EA
Min Order Qty
1
Removal Rating
0.2 µm
End Configuration
SOE fin end, external 226 O-rings
Change Out Differential Pressure
2.4 bard
Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 30 Inches, Nitrile, Blank - DOE with elastomer gasket seals & end caps product photo

Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 30 Inches, Nitrile, Blank - DOE with elastomer gasket seals & end caps

Product ID: DFNT0230UN
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
0.2 µm
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
Gasket / O-Ring Material
Nitrile
End Configuration
Blank - DOE with elastomer gasket seals & end caps
See All Attributes
Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 9.75 Inches, Nitrile, SOE flat closed end external 222 O-rings product photo

Duo-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Length 9.75 Inches, Nitrile, SOE flat closed end external 222 O-rings

Product ID: DFNT02975UNM3
Unit of Measure
30/EA
Min Order Qty
30
Removal Rating
0.2 µm
End Configuration
SOE flat closed end, external 222 O-rings
Change Out Differential Pressure
2.4 bard
2,600 Items

Description

String-wound filter cartridges are a type of depth filter cartridge that is made by weaving yarn (cotton, glass fiber, polypropylene, polyester, nylon, and polyphenylene sulfide (PPS))around a core usually of 304 SS or 316 SS. 

Product Highlights:
  • High chemical and temperature compatibility
  • 10+ different medium options 
  • Economical choice

Specifications

Product Attributes Values
String-Wound Filters Filter Medium
  • Bleached cotton
  • Standard cotton
  • Natural cotton
  • Glass fiber
  • Heat purified glass fiber
  • Premium polypropylene
  • Standard polypropylene
  • Rayon
  • Polyester
  • Nylon
  • Acrylic
  • Polyphenylene sulfide (PPS)
  • Polytetrafluoroethylene (fluoropolymer)

Filter Grade Range

 0.5 μm to 350 μm
Length 10.2 cm (4 in.) to 127 cm (50 in.)

Applications/Uses

Pall’s string-wound filter cartridges are used for a variety of applications, including chemicals and polymer, oil and gas, and microelectronics.

Chemicals and Polymer

  • Midstream Process Water 
  • Poly Commodity Raw Material (Fluids)
  • Poly Commodity Intermediates (Fluids)
  • Poly Engineered & Special Raw Material (Fluids)
  • Poly Engineered & Special Intermediate (Fluids)

Oil and Gas

  • Upstream Offshore Boiler Water
  • Upstream Offshore Produced Water
  • Upstream Onshore Produced Water
  • Upstream Onshore Surface Discharged Water
  • Midstream Process Water
  • Upstream Injection Water & SRU

Microelectronics

  • Acid etch systems - including Piranha Etch Solvent Strip applications
  • Most aggressive and/or high temperature acids or solvents

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

Oil Production

  • Well completion fluids
  • Water flood

Air & Gas

  • Compressed air
  • Instrument air
  • 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

FAQs

1. Which are the two series that Pall offers for string-wound filters?

Pall offers string-wound filters in the DFT Classic and Encore Series.

 

2. Why choose Pall’s string-wound depth filters?

Pall’s string-wound depth filters are designed for advanced and efficient particulate removal performance and high contaminant holding capacity. These filter cartridges have high chemical, temperature, and process fluid compatibility compared to traditional polypropylene or polyester materials and come with 10+ different medium options.