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String Wound Filter Cartridges (Big Blue 4.5” OD)
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String Wound Filter Cartridges (Big Blue 4.5” OD)

$11.02

Case Qty: 18 filters per case. Please order in multiples of 18.

Don’t see the exact configuration you need?
We manufacture custom lengths, micron ratings, media types, and core materials to match your system requirements.
Email sales@customfiltrationsolutions.com or call 331-215-4119 for support or a custom quote.

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CFS String Wound Filter Cartridges – Big Blue (4.5" OD)

CFS Big Blue string wound cartridges provide high-capacity depth filtration with low pressure drop and long service life. The graded-density winding captures particles throughout the media thickness, making these an excellent choice for prefiltration and applications with variable or heavy sediment load.

Key Features

  • Large 4.5" outside diameter for higher flow and extended life
  • Depth-loading wound construction for high dirt-holding capacity
  • Available in polypropylene or bleached cotton media
  • Choice of polypropylene core or stainless steel core
  • DOE (double open end) configuration for easy installation
  • Fits industry-standard Big Blue style housings

Typical Applications

  • Process water and general plant utilities
  • Food and beverage ingredient filtration
  • Reverse osmosis prefiltration
  • Chemicals, solvents, glycols, coolants
  • Well water and municipal water sediment reduction
  • Plating and wash systems

Micron Ratings

Available nominal ratings: 1, 5, 10, 20, 50, 100 micron.

Dimensions

Outside Diameter Nominal Lengths End Configuration
4.5" 10", 20" DOE (Double Open End)

Materials

Component Options
Media Polypropylene, Bleached Cotton
Core Polypropylene Core, Stainless Steel Core

Operating Guidance

  • Select the coarsest micron that meets your quality target to maximize service life.
  • Use 10" or 20" lengths based on housing size and capacity requirements.
  • Choose stainless steel core for elevated temperature or demanding mechanical conditions.
  • Verify chemical compatibility for media and core with your process fluid and temperature.

Ordering Information

Configure the cartridge using the product options on this page.

Option Group Values
Media Polypropylene, Bleached Cotton
Micron Rating 1, 5, 10, 20, 50, 100
Length 10", 20"
Core Polypropylene Core, Stainless Steel Core

What to Provide for a Quote

  • Media, micron rating, and length
  • Core preference (polypropylene or stainless steel)
  • Quantity required and target delivery date
  • Operating temperature and brief fluid description

Compatibility & Fitment

This CFS Big Blue string wound cartridge is dimensionally compatible with standard 4.5" OD filter housings and may be used as a direct alternative to common commercial wound filter cartridges with matching length and micron ratings.

Common Industry Part Numbers with Similar Fit

  • SP-WP5-BB (4.5" x 10", 5 micron string wound)
  • SP-WP10-BB (4.5" x 10", 10 micron string wound)
  • SP-WP20-BB (4.5" x 10", 20 micron string wound)
  • SP-WP5-20BB (4.5" x 20", 5 micron string wound)
  • SP-WP10-20BB (4.5" x 20", 10 micron string wound)
  • SP-WP20-20BB (4.5" x 20", 20 micron string wound)
  • Pleated, melt-blown, and carbon Big Blue cartridges are also available separately.

Note: Product equivalency is based on dimensions, media type, and DOE end configuration. Always verify micron rating, core material, process temperature, and chemical compatibility for your application.

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