Uponor LF4515075 Pex X Copper Adapter 1/2x3/4 Brass

Product Description

The UPONOR LF4515075 is a lead-free brass adapter fitting designed to transition between PEX tubing and copper pipe in potable water and hydronic plumbing systems. It connects 1/2-inch PEX on one end to 3/4-inch copper sweat (type C) on the other, allowing installers to tie PEX distribution runs into existing or new copper infrastructure. The lead-free brass construction meets current safe drinking water requirements, making it appropriate for use in domestic water supply lines. Licensed plumbers install this fitting as part of rough-in work, remodel tie-ins, or system expansions where PEX and copper must be joined.

This adapter is used in residential and light commercial plumbing applications where a size transition between PEX and copper is required. Common scenarios include connecting a 1/2-inch PEX branch line to a 3/4-inch copper main or stub-out, retrofitting copper systems with PEX distribution, and new construction plumbing rough-ins. The domestic designation confirms the fitting is manufactured in the United States, which may satisfy project specifications or local code requirements for domestically sourced materials.

Key Features

• Lead-free brass construction meets safe drinking water act requirements for potable water use
• 1/2-inch PEX inlet to 3/4-inch copper sweat outlet provides size transition in a single fitting
• PEX x C (sweat) end configuration works with standard expansion or crimp PEX connections and soldered copper
• Domestically manufactured for projects requiring USA-made components
• Compact adapter design minimizes material and labor compared to multi-piece transition assemblies

Compatibility

Designed as an OEM-style transition fitting compatible with 1/2-inch PEX tubing systems and 3/4-inch copper sweat connections in residential and light commercial potable water plumbing.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC standards. Shut off the water supply and relieve system pressure before beginning work. The copper sweat end requires standard soldering tools and flux-grade solder rated for potable water; allow the joint to cool fully before pressurizing. The PEX end should be installed using the appropriate Uponor expansion or crimp method per the tubing manufacturer specifications.

Technical Specifications

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

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: LF4515075