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Hydronix SDC-45-2001, 1 Micron Gradient Density Filter 20x4.5


Retail: $25.99 /ea
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The Hydronix SDC-45-2001, 1 Micron Gradient Density Filter 20x4.5 is an economical equivalent to the Liquatec SDF-45-2001. This 100% polypropylene filter contains graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The Hydronix water filter reduces waterborne contaminants like sand, silt, sediment and rust. The 20" Hydronix filter is resistant to chemicals and is ideal for residential, commercial, food service and industrial applications.

Constructed with a coreless design, this Hydronix Water Filter is surfactant free, adhesive free and binder free. The true multi-stage depth filtration of this cartridge is ideal for residential, industrial, commercial and food service applications. The Hydronix Sediment Filter uses 4 separate layers of micron filtration, as the outside-in flow allows the outer layer to trap larger sized particles. This 1 micron filter is an inexpensive solution to pre-filtration for reverse osmosis systems and post-filtration for granular activated carbon filters (also known as GAC filters). Do not use this filter with water that is of unknown quality or microbiologically unsafe without adequate disinfection before or after the system.


  • Brand: Hydronix
  • Part Number: SDC-45-2001
  • Replaces Part Number: SDF-45-2001
  • Pack Size: 1
  • Filter Life: 6 months
  • Filter Media: Gradient density polypropylene
  • Dimensions: 20" x 4 1/2"
  • Micron Rating: 1 micron
  • Flow Rate: 1 psi @ 20 gpm
  • Operating Temperature: 40 to 145 degrees Fahrenheit (62.8 degrees Celsius)
  • Certified to NSF standard 42
  • Lower pressure drop
  • Adhesive free, binder free, surfactant free

Compatible Parts:

The Hydronix SDC-45-2001 is the correct replacement for the following part numbers:

  • 20-4501S
  • 555475-43
  • DGD-2501-20
  • FFDG-20BB-1
  • FPMB-BB1-20
  • GD-2501-20BB
  • GDA-250.5-20BB
  • PPMB-1-20BV
  • SDF-45-2001
  • Check out our full line of 20" Sediment Filters: 20 Inch Sediment Filters

Fits In These Systems:

The Hydronix SDC-45-2001 fits in the following systems: