Parker 23R20A Cartridge Filter 5 Micron 20 Inch Cotton

Product Description

The PARKER 23R20A is a string-wound cartridge filter designed for plumbing and water treatment applications requiring reliable sediment removal. Constructed from FDA-grade cotton wound over a polypropylene plastic core, this filter delivers a 5-micron rating to capture fine particulates including sand, silt, rust, and scale. The 20-inch length and 2.5-inch outside diameter fit standard filter housings used across residential and light commercial installations. Licensed plumbers and water treatment technicians install this filter as part of point-of-entry and point-of-use filtration systems. Maximum working temperature is 120 degrees F, making it suitable for cold and cool water service lines.

This cartridge is well suited for whole-house sediment filtration, pre-filtration ahead of softeners or reverse osmosis systems, and general service water lines where particulate contamination is a concern. The string-wound construction provides depth filtration, trapping particles throughout the media rather than only at the surface. Typical installations include municipal water supplies and well water systems where sediment loads vary seasonally or after system disturbances.

Key Features

• 5-micron rating removes fine sediment including silt, rust, and scale
• String-wound cotton construction provides depth filtration for higher dirt-holding capacity
• FDA-grade cotton media suitable for potable water applications
• Polypropylene plastic core resists moisture and maintains structural integrity under line pressure
• 20-inch length fits standard 20-inch Big Blue and compatible filter housings
• Rated to 120 degrees F for cold and cool water service

Compatibility

Designed as an OEM-style replacement cartridge for standard 20-inch filter housings accepting a 2.5-inch outside diameter string-wound cartridge in residential and light commercial water treatment systems.

Installation Notes

A licensed plumber or water treatment technician should handle installation in potable water systems to meet local IPC requirements. Shut off the water supply and relieve system pressure before opening the filter housing. Do not exceed the rated maximum temperature of 120 degrees F. Replace the cartridge on a schedule based on water quality and pressure drop across the housing rather than waiting for visible flow restriction.