Uponor LF4575050 1/2 in Pex X Fnpt Brass Female Adapter

Product Description

The UPONOR LF4575050 is a lead-free brass female adapter designed to transition a 1/2-inch PEX tubing connection to a 1/2-inch female NPT threaded fitting. This fitting is used in potable water distribution systems where PEX tubing meets threaded pipe connections, valves, or fixtures. The lead-free brass construction meets domestic sourcing and drinking water compliance requirements. Plumbers and pipefitters install this adapter during new construction and retrofit projects where PEX runs terminate at a threaded connection point.

This adapter is suited for residential and light commercial plumbing applications involving 1/2-inch PEX tubing. It is commonly installed at fixture supply stops, valve inlets, and manifold transitions where a female NPT thread is required. The fitting is designed for use with the Uponor ProPEX expansion system, which requires the appropriate expansion tool and PEX rings for a proper connection on the PEX side.

Key Features

• Lead-free brass construction meets Safe Drinking Water Act compliance requirements
• 1/2-inch PEX connection on one end, 1/2-inch FNPT thread on the other
• Domestic product designation supports project specifications requiring domestic sourcing
• Transitions PEX tubing to standard NPT-threaded fittings, valves, or fixtures
• Compatible with Uponor ProPEX expansion-style installation method

Compatibility

Designed as an OEM-style fitting for use in 1/2-inch PEX-a tubing systems utilizing the Uponor ProPEX expansion connection method in potable water distribution applications.

Installation Notes

Installation is performed by a licensed plumber. Shut off the water supply and depressurize the line before beginning work. The PEX side requires an expansion tool and the correct-size PEX ring; do not attempt to compress or crimp this fitting type. All threaded connections should be made with appropriate thread sealant or PTFE tape and must comply with applicable local plumbing codes and the International Plumbing Code (IPC).

Technical Specifications

• Connection Type: PEX x FNPT
• Size: 1/2 inch
• Material: Lead-Free Brass
• Country of Origin: Domestic

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: LF4575050