Uponor LF4547575 Propex Brass Coupling 3/4 Inch

Product Description

The UPONOR LF4547575 is a 3/4-inch nominal brass coupling designed for use with ProPEX end-style connections. It joins two sections of PEX tubing in potable water and hydronic distribution systems. The lead-free brass construction meets current plumbing code requirements for drinking water applications. This fitting is installed by licensed plumbers and pipefitters using a ProPEX expansion tool to create a reliable, leak-resistant joint without soldering or crimping. Its domestic manufacture supports project compliance on jobs requiring American-made components.

This coupling is suited for residential and light commercial plumbing systems where 3/4-inch PEX tubing is run for hot and cold water distribution or radiant heating supply and return lines. The ProPEX expansion method creates a joint that tightens around the fitting as the expanded tubing returns to its original diameter, making it a preferred connection style in high-volume rough-in work.

Key Features

• 3/4-inch nominal size for standard PEX distribution runs
• ProPEX end style for tool-expanded, compression-fit connections
• Lead-free brass construction meets safe drinking water standards
• Domestically manufactured for projects with domestic content requirements
• No soldering, solvent, or open flame required during installation

Compatibility

Designed as an OEM-style replacement and standard-use fitting for 3/4-inch ProPEX PEX tubing systems in residential and commercial plumbing applications.

Installation Notes

Installation requires a calibrated ProPEX expansion tool sized for 3/4-inch tubing. Shut off the water supply and depressurize the line before cutting or fitting work begins. Follow applicable IPC and local plumbing code requirements for PEX installations, including minimum expansion ring seating depth. Do not over-expand or reuse expansion rings that show cracking or deformation.

Technical Specifications

• Nominal Size: 3/4 inch
• End Style: ProPEX
• Material: Brass (Lead-Free)
• Country of Origin: Domestic

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: LF4547575