Uponor Q4771310 Reducing Coupling 1-1/4 X 1 Inch Propex

Product Description

The UPONOR Q4771310 is a reducing coupling designed for ProPEX expansion-style connections in potable water and hydronic piping systems. It transitions from a 1-1/4 inch nominal pipe to a 1 inch nominal pipe using the ProPEX end style, which requires a ProPEX expansion tool and corresponding PEX rings for installation. The fitting body is constructed from polysulfone and modified polyphenylsulfone, materials chosen for their resistance to high temperatures, chlorine, and pressure cycling common in residential and light commercial plumbing applications. Licensed plumbers and pipefitters are the primary installers of this component.

This reducing coupling is used wherever a ProPEX PEX-a piping system requires a step-down in pipe diameter, such as transitioning from a main distribution line to a branch line. Typical applications include domestic hot and cold water supply, radiant heating distribution manifolds, and hydronic systems. The domestic designation indicates this fitting is manufactured in the United States, which may be relevant for projects with domestic content requirements.

Key Features

• Reduces from 1-1/4 inch nominal to 1 inch nominal in a single fitting
• ProPEX end style for use with PEX-a tubing and expansion rings
• Polysulfone and modified polyphenylsulfone construction for thermal and chemical resistance
• Domestically manufactured fitting
• No metal components to corrode or dezincify in aggressive water conditions

Compatibility

Designed for use with UPONOR ProPEX PEX-a tubing systems requiring a 1-1/4 inch to 1 inch reducing connection using the ProPEX expansion method.

Installation Notes

Installation requires a calibrated ProPEX expansion tool and the correct size PEX expansion rings for both the 1-1/4 inch and 1 inch ends. Shut off the water supply and depressurize the line before cutting into any existing piping. Work must be performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC. Allow expanded PEX rings to fully contract around the fitting before pressurizing the system.

Technical Specifications

• Nominal Size: 1-1/4 x 1 inches
• End Style: ProPEX
• Material: Polysulfone / Modified Polyphenylsulfone
• Origin: Domestic (USA)

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: Q4771310