Uponor Q4751550 Reducing Tee 1-1/2x1-1/2x1/2 Inch Pex

Product Description

The UPONOR Q4751550 is a reducing tee fitting designed for PEX piping systems. It connects two 1-1/2 inch runs to a 1/2 inch branch outlet, allowing a distribution line to feed a smaller branch without additional adapters. The fitting is manufactured from modified polyphenylsulfone, a high-performance thermoplastic known for its resistance to heat, pressure, and chemical exposure in potable water applications. Licensed plumbers working on residential or light commercial hydronic and domestic water systems install this fitting as part of an expansion-style PEX connection assembly.

This reducing tee is suited for PEX distribution manifold branch-offs, radiant heating supply and return lines, and domestic hot and cold water rough-in work where a main trunk line must feed a reduced-size branch. The nominal size configuration of 1-1/2 x 1-1/2 x 1/2 inches makes it a practical choice for trunk-and-branch plumbing layouts. It is domestically sourced, which may satisfy project specifications requiring domestic-origin materials.

Key Features

• Nominal size: 1-1/2 x 1-1/2 x 1/2 inches — main run to reduced branch in a single fitting
• PEX end style for use with expansion or crimp PEX connection methods
• Modified polyphenylsulfone construction offers high thermal and chemical resistance
• Reducing configuration eliminates the need for a separate bushing or adapter at the branch
• Domestically manufactured — suitable for projects with domestic-origin material requirements

Compatibility

Designed as an OEM-style replacement or new-install fitting for PEX piping systems requiring a 1-1/2 x 1-1/2 x 1/2 inch reducing tee connection with a PEX end style.

Installation Notes

Installation is performed by a licensed plumber following applicable IPC or local plumbing code requirements. Shut off the water supply and depressurize the line before cutting into any existing piping. Use the appropriate PEX expansion or crimp tool rated for the fitting size to ensure a leak-free connection. Do not overtighten or force connections, as modified polyphenylsulfone fittings rely on proper tool engagement rather than mechanical torque.

Technical Specifications

• Nominal Size: 1-1/2 x 1-1/2 x 1/2 inches
• End Style: PEX
• Material: Modified Polyphenylsulfone
• Origin: Domestic

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: Q4751550