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White cylindrical string-wound filter cartridge, 20 inches tall, 25 micron rating, polypropylene media

Pentek

Pentek 155356-75 String Wound Filter Cartridge 20 gpm 25 Micron

SKU CH-RG91-K6FNQ

A 25 micron string wound polypropylene cartridge reduces sediment at 20 gpm for 20 inch Big Blue housings

  • Reduces sediment for clearer water with 25 micron filtration
  • Delivers 20 gpm flow for high-demand systems
  • Fits 20 in Big Blue housings for easy installation
  • Withstands 125 psi pressure for reliable operation
  • Meets ANSI/NSF 42 standard for drinking water safety

Pentek 25 Micron Sediment Cartridge

The Pentek 155356-75 string wound filter cartridge reduces sediment in drinking water systems. It fits 20 in Big Blue housings and carries ANSI/NSF 42 certification. The polypropylene media handles flow rates up to 20 gpm for whole-house or commercial point-of-entry use.

Installing the DGD Series Cartridge

Shut off pressure and relieve system pressure before removing the housing bowl. Insert the cartridge with the 1 in inside diameter centred on the housing post and the 4 1/2 in outside diameter seated against the sealing surface. Over-tightening the bowl can crack the housing or distort the cartridge ends.

Check Housing Compatibility and Limits

Verify the existing housing is a 20 in Big Blue model with a 1 in centre post before ordering. Confirm operating pressure stays below 125 psi and water temperature remains between 40 and 145 Degrees F. The cartridge is not suited for applications requiring finer micron ratings or higher flow capacity.

Highlights

  • Reduces sediment for clearer water with 25 micron filtration
  • Delivers 20 gpm flow for high-demand systems
  • Fits 20 in Big Blue housings for easy installation
  • Withstands 125 psi pressure for reliable operation
  • Meets ANSI/NSF 42 standard for drinking water safety

Specifications

BrandPENTAIR PENTEK

Questions about this item

How can I confirm the cartridge is reducing sediment effectively after installation?

Watch for clearer water at the tap and a steady flow near the 20 gpm rating; the 25 micron rating means finer particles are being trapped.

What comes with the Pentek 155356-75 cartridge and what must I supply?

The cartridge itself is included; you must provide a compatible 20 in Big Blue housing, plumbing connections and a water source within 40 to 145 °F and up to 125 psi.

Which Pentek DGD series version should I choose for my 20 in Big Blue housing?

Select the 155356-75 model when you need a 25 micron, 20 gpm string wound polypropylene cartridge that fits 20 in Big Blue housings and meets ANSI/NSF 42 for drinking water.

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