Parker 23R20 String-wound Cartridge Filter 5 Micron Cotton

Product Description

The PARKER 23R20 is a string-wound cartridge filter designed for plumbing and water treatment applications requiring reliable particulate removal. Constructed from FDA-grade cotton wound around a tinned steel core, this filter achieves a 5 micron rating, capturing sediment, sand, rust, and fine particles from potable and process water lines. The cartridge measures 2.5 inches in outside diameter and 20 inches in length, fitting standard 20-inch big-blue and comparable filter housings. It is rated for operation up to 250 degrees F, making it suitable for both cold and hot water service. Licensed plumbers and water treatment technicians are the primary installers of this filter type.

The PARKER 23R20 suits residential, light commercial, and industrial water filtration systems where a 20-inch string-wound sediment filter is specified. Common applications include pre-filtration ahead of water softeners, reverse osmosis systems, and boiler feed lines. The cotton string-wound construction provides graduated density filtration, meaning the outer layers capture larger particles while finer particulate is trapped closer to the core, extending service life compared to uniform-density media. Systems handling sediment-laden well water or municipal supply lines with pipe scale are typical use cases.

Key Features

• 5 micron rating removes fine sediment, rust, and particulate from water supply lines
• FDA-grade cotton construction suitable for potable water service
• Tinned steel core resists corrosion and maintains structural integrity under flow pressure
• Rated to 250 degrees F for compatibility with hot water and process water applications
• Standard 2.5 inch OD and 20 inch length fits widely available filter housings
• String-wound graduated density design extends cartridge service life

Compatibility

Designed as an OEM-style replacement or direct-fit cartridge for standard 20-inch string-wound filter housings accepting a 2.5 inch outside diameter cartridge.

Installation Notes

Installation and replacement of this filter cartridge is typically performed by a licensed plumber or water treatment technician. Shut off the water supply and relieve line pressure before opening the filter housing. Follow the housing manufacturer torque guidelines for the sump cap and inspect the O-ring for wear before reinstalling. Dispose of spent cartridges per local regulations, particularly if installed on process or non-potable water lines.