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The PARKER N11R30A is a string-wound cartridge filter designed for plumbing and water filtration applications. It measures 30 inches in length with a 2.5-inch outside diameter and provides 50-micron filtration using a nylon string-wound construction over a polypropylene plastic core. This filter is rated for water service up to 120 degrees F and is suited for removing sediment, particulates, and debris from water lines in residential and light commercial systems. Licensed plumbers and water treatment technicians are the primary installers of this type of filter cartridge.
This filter is used in standard cartridge filter housings that accept 2.5-inch OD, 30-inch cartridges. Typical applications include whole-house sediment filtration, pre-filtration ahead of softeners or membrane systems, and process water lines where particulate control at 50 microns is required. The nylon string-wound media is compatible with a broad range of water chemistries and is commonly deployed in both residential and light commercial water treatment setups.
Designed as an OEM-style replacement cartridge for standard plumbing filter housings that accept 2.5-inch OD, 30-inch string-wound filter cartridges.
This cartridge is installed by licensed plumbers or water treatment technicians. Before replacing the cartridge, shut off the water supply to the filter housing and relieve system pressure by opening a downstream fixture. Use a housing wrench to remove the filter sump, then extract the spent cartridge and inspect the housing O-ring before inserting the replacement. Follow local plumbing codes and the housing manufacturer guidelines for torque and reassembly procedure.
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