Uponor LF4517550 Pex to Copper Adapter 3/4x1/2 Brass

Product Description

The UPONOR LF4517550 is a lead-free brass adapter fitting designed to transition from a 3/4-inch PEX connection to a 1/2-inch copper (sweat) connection. This type of fitting is a standard component in residential and light commercial plumbing systems where PEX tubing runs meet copper supply lines or copper-connected fixtures. The PEX end accepts a standard expansion or crimp connection depending on the system in use, while the 1/2-inch C (sweat) end is soldered to copper pipe in the conventional manner. Licensed plumbers and pipefitters install this fitting during new construction, remodel work, or system conversions where both PEX and copper materials are present in the same run.

This adapter is suited for potable water supply applications in residential and light commercial plumbing. It is commonly installed at transition points where a PEX distribution trunk or branch line connects to an existing copper stub-out, fixture supply, or manifold port. The domestic designation indicates it is manufactured for use in the United States and meets applicable lead-free standards for contact with drinking water. It is appropriate for both hot and cold water supply lines within standard residential plumbing systems.

Key Features

• Lead-free brass construction compliant with potable water contact requirements
• 3/4-inch PEX inlet transitions to 1/2-inch copper sweat outlet
• C (sweat) end is compatible with standard copper pipe soldering procedures
• Domestically manufactured fitting for use in U.S. plumbing applications
• Compact adapter design simplifies PEX-to-copper transitions in tight spaces

Compatibility

Designed as an OEM-style transition fitting for 3/4-inch PEX systems connecting to 1/2-inch copper pipe in residential and light commercial potable water plumbing installations.

Installation Notes

Installation must be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and relieve system pressure before beginning work. The copper sweat end requires standard soldering tools and flux-core solder rated for potable water use. Ensure the PEX end is connected using the appropriate expansion or crimp method compatible with the installed PEX system type.

Technical Specifications

• Inlet Size: 3/4 inches (PEX)
• Outlet Size: 1/2 inches (Copper Sweat)
• Connection Type: PEX x C (Sweat)
• Material: Brass
• Lead-Free: Yes
• Origin: Domestic

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: LF4517550