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The PENTAIR 158838 is a single-stage water filtration system designed for point-of-entry or point-of-use applications in residential and light commercial settings. This filtration unit reduces sediment, particulates, and other contaminants from a water supply line, protecting downstream equipment and improving water quality. It is a new-condition unit suited for installation by licensed plumbers or qualified water treatment professionals. The single-stage design provides straightforward, compact filtration in applications where one filtration pass meets the treatment requirement.
This filtration system is appropriate for residential plumbing systems, light commercial supply lines, and equipment-protection applications where sediment or particulate removal is the primary treatment goal. It is commonly installed at main supply lines, before water heaters, boilers, or other mechanical equipment that benefits from filtered water input. Single-stage systems are a practical choice when space is limited or when a simpler filtration solution is sufficient for the water quality at the site.
Designed as an OEM-style single-stage filtration system for residential and light commercial water supply plumbing applications.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC requirements. Shut off the main water supply and relieve line pressure completely before cutting into any supply line or making connections. Use appropriate thread sealant or tape on threaded fittings as required by the fitting material and local code. Follow the manufacturer documentation for filter cartridge orientation and housing torque guidance during assembly.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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