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The DELTA FAUCET dwq300350 is a replacement pre-filter cartridge designed for use with the Clarifi Tankless Reverse Osmosis water filtration system. The pre-filter sits upstream of the main reverse osmosis membrane and multi-stage filter stack, intercepting sediment and particulates before water reaches the primary filtration layers. This protects the RO membrane and extends its service life. Installation is tool-free and takes under a minute, making it well-suited for routine maintenance by plumbers and knowledgeable homeowners alike.
This cartridge is intended for residential drinking water applications where an inline pre-filter stage is required. It fits within the Clarifi Tankless Reverse Osmosis system, which uses high-pressure filtration to reduce 90 or more contaminants from potable water. The pre-filter is part of a broader multi-cartridge service interval that includes the carbon filter and the RO membrane, allowing a technician or homeowner to swap all stages in a single service visit.
Designed as a replacement pre-filter cartridge for the DELTA FAUCET Clarifi Tankless Reverse Osmosis System.
Pre-filter cartridge replacement is a low-voltage-free, water-side service task. Shut off the feed water supply valve to the RO system before removing the existing cartridge. Follow the system manufacturer's cartridge replacement sequence to avoid cross-contamination between filter stages. Plumbers or water treatment technicians should verify local plumbing code requirements before servicing any point-of-use drinking water system.
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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