Parker 11R20S 50 Micron Cotton Cartridge Filter 2.5 in 20 in

Product Description

The PARKER 11R20S is a string-wound cartridge filter designed for plumbing and water filtration applications. It measures 2.5 inches in outside diameter and 20 inches in length, providing a 50 micron filtration rating suitable for sediment reduction in commercial and residential water systems. The cotton winding construction meets FDA material grade standards, and the stainless steel core delivers structural rigidity under pressure and heat. Licensed plumbers and water treatment technicians are the primary installers for this type of filter cartridge.

This filter is used in standard sump-style filter housings that accept 20-inch cartridges. It is suited for potable water pre-filtration, process water treatment, and general plumbing system sediment control. The 50 micron rating targets coarse particulate, making it a common first-stage filter in multi-stage systems. The FDA-grade cotton material makes it appropriate for food service, beverage, and potable water installations where material compliance is required. Maximum rated working temperature is 250 degrees F.

Key Features

• 50 micron string-wound filtration for coarse sediment removal
• FDA-grade cotton winding material suitable for potable water and food-service applications
• Stainless steel core for structural strength and corrosion resistance
• 20 inch length fits standard sump-style filter housings
• Rated to 250 degrees F maximum working temperature
• 2.5 inch outside diameter for compatibility with common housing diameters

Compatibility

Designed as an OEM-style replacement for standard 20-inch sump cartridge filter housings accepting a 2.5-inch outside diameter cartridge. Consult the filter housing manufacturer specifications to confirm fitment before installation.

Installation Notes

Installation of cartridge filters is typically performed by a licensed plumber or qualified water treatment technician. Shut off the water supply and relieve system pressure completely before opening the filter housing. Inspect the housing o-ring for wear or damage and replace if necessary before seating the new cartridge. Follow applicable local plumbing codes and the housing manufacturer guidelines for torque and reassembly procedures.