Parker 39R20S String-wound Cartridge Filter 1 Micron Cotton

Product Description

The PARKER 39R20S is a string-wound cartridge filter designed for plumbing and liquid filtration applications requiring fine particulate removal down to 1 micron. Constructed from FDA-grade cotton wound over a stainless steel core, this filter measures 2.5 inches in outside diameter and 20 inches in length. It handles operating temperatures up to 250 degrees F, making it suitable for hot-water and process-fluid systems. Licensed plumbers and filtration technicians install this type of cartridge in standard housing systems for sediment control in potable water, industrial process lines, and commercial plumbing setups.

This filter fits residential and commercial plumbing filtration systems where tight particulate control is required. The 1 micron rating targets fine sediment, silt, and suspended particles. The string-wound cotton construction provides a graded density profile, trapping larger particles in the outer layers and finer particles toward the core. The stainless steel core adds structural rigidity and resists corrosion in wet environments. Typical applications include point-of-entry water treatment, pre-filtration ahead of membranes or UV systems, and process fluid lines in light industrial settings.

Key Features

• 1 micron rating for fine sediment and particulate removal
• FDA-grade cotton media suitable for potable water applications
• Stainless steel core for structural integrity and corrosion resistance
• Rated for operating temperatures up to 250 degrees F
• String-wound construction provides graded-density filtration
• 20 inch length with 2.5 inch outside diameter for standard filter housings

Compatibility

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

Installation Notes

Installation is performed by a licensed plumber or qualified filtration technician. Shut off the water supply and relieve system pressure before opening the filter housing. Inspect the housing O-ring and replace it if worn before reinstalling the cap. Follow applicable IPC and local plumbing code requirements for potable water filtration installations.