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The ZURN PEX qat333 is a 1/2 inch PEX plastic compression tee designed to create three-way branch connections in PEX piping systems. All three ports use compression-style end connections, eliminating the need for heat, crimp rings, or specialty tooling during installation. This fitting is suited for potable water distribution and hydronic heating applications. Licensed plumbers and pipefitters install this fitting when adding branch lines to existing or new PEX runs. The PEX construction provides corrosion resistance and flexibility compatible with PEX tubing systems.
This compression tee is appropriate for residential and light commercial plumbing and hydronic systems where 1/2 inch PEX tubing is the specified pipe size. Typical installations include domestic hot and cold water supply lines, radiant floor heating loops, and baseboard hydronic branch connections. The compression connection style allows the fitting to be made up using standard hand tools without flame or hydraulic press equipment, making it practical for service and retrofit work in tight spaces or occupied structures.
Designed as an OEM-style compression fitting replacement or new-install component for 1/2 inch PEX tubing in residential and light commercial potable water and hydronic piping systems.
Installation is performed by a licensed plumber in accordance with applicable local plumbing codes and IPC requirements. Shut off the water supply and depressurize and drain the affected line before cutting into existing tubing. Ensure the PEX tubing end is cut square and deburred before seating into the compression fitting. Do not overtighten the compression nut, as PEX material can deform under excessive mechanical load.
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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