Uponor LFP4517575 Propex Press Adapter 3/4 X 3/4 Pex Copper

Product Description

The UPONOR LFP4517575 is a ProPEX press adapter designed to transition a 3/4-inch PEX line to a 3/4-inch copper connection. Built from lead-free brass, this fitting meets drinking water safety requirements for potable water systems. The ProPEX end expands and connects using the Uponor ProPEX expansion method, while the copper end accepts a standard press or sweat connection. Licensed plumbers install this adapter in residential and light commercial plumbing systems where PEX distribution lines terminate at copper stub-outs, manifolds, or fixture supply connections.

This adapter is suited for potable water supply systems, hydronic heating distribution, and mixed-material plumbing layouts where PEX tubing meets existing copper infrastructure. It is a domestically sourced fitting, making it appropriate for projects subject to Buy American provisions or local procurement requirements. The lead-free brass construction satisfies NSF 61 and NSF 372 low-lead content thresholds applicable to wetted components in drinking water systems.

Key Features

• 3/4-inch PEX by 3/4-inch copper nominal size transition
• Lead-free brass construction for potable water compliance
• ProPEX expansion end compatible with Uponor ProPEX expansion tooling
• Copper end accepts press or sweat connection methods
• Domestically sourced fitting suitable for Buy American project requirements

Compatibility

Designed as an OEM-style transition fitting for 3/4-inch ProPEX PEX tubing systems connecting to 3/4-inch copper pipe in residential and light commercial plumbing applications.

Installation Notes

Installation requires a licensed plumber and the appropriate Uponor ProPEX expansion tool to expand the PEX end before seating the fitting. Shut off the water supply and depressurize the line before making any connections. The copper end should be deburred and cleaned before pressing or soldering per standard IPC practices. Do not use open flame near PEX tubing when soldering an adjacent copper joint.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.