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The UPONOR Q4751010 is a 1-inch PEX tee fitting constructed from polysulfone, designed for use in domestic water distribution systems. This tee provides a branch connection point within PEX piping runs, allowing installers to split or redirect flow in potable water applications. Polysulfone is a high-performance thermoplastic known for its resistance to high temperatures, chlorine, and chemical degradation, making it a reliable choice for long-term plumbing service. Licensed plumbers and pipefitters install this fitting as part of new construction or retrofit PEX plumbing systems where a durable, corrosion-resistant branch connection is required.
This tee is suited for residential and light commercial domestic water applications where 1-inch PEX pipe is used. It is compatible with standard PEX expansion or crimp connection methods appropriate for the Uponor system. Typical installations include main supply trunk lines, branch takeoffs to fixtures, and manifold-fed distribution layouts. Its polysulfone construction makes it appropriate for both hot and cold water service lines within a building's domestic plumbing system.
Designed as an OEM-style replacement or new-installation fitting for 1-inch PEX domestic water distribution systems using Uponor-compatible connection methods.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the domestic water supply and depressurize the line before cutting into existing piping or making new connections. Use the correct expansion or crimp tooling specified for the connection type and pipe size to ensure a leak-free joint. Inspect all connections for proper seating before restoring water pressure and placing the system back in service.
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