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The PARKER M11R30A is a string-wound polypropylene cotton cartridge filter designed for inline plumbing filtration applications. At 30 inches long with a 2.5-inch outside diameter and a 50-micron rating, it removes sediment, dirt, rust particles, and suspended solids from water lines before they reach downstream equipment. The polypropylene cotton construction meets FDA material grade standards, making it suitable for use in potable water systems. Licensed plumbers and water treatment technicians install this style of cartridge in standard filter housings as part of whole-building or point-of-entry filtration setups.
This cartridge is used in residential and light commercial plumbing systems where large-particulate prefiltration is required. Typical applications include protecting water heaters, boilers, and fixtures from sediment buildup, or serving as a first-stage filter upstream of finer membrane or carbon filtration systems. The 50-micron rating makes it appropriate for high-flow, coarse-filtration duties. The string-wound construction provides graduated density, trapping larger particles at the outer layers and finer particles toward the core.
Designed as an OEM-style replacement or direct-fit cartridge for standard 2.5-inch inside-diameter, 30-inch filter housings used in residential and commercial plumbing filtration systems.
Installation is performed by a licensed plumber or qualified water treatment technician. Shut off the main water supply and relieve system pressure before opening the filter housing. Inspect the housing O-ring for wear or damage before seating the new cartridge, and do not overtighten the housing sump by hand or with a housing wrench beyond the manufacturer-specified torque range. Follow local plumbing codes, including applicable IPC requirements, for potable water system service.
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