Uponor LF4571010 Female Adapter 1 in Pex X Fnpt Brass

Product Description

The UPONOR LF4571010 is a 1-inch lead-free brass female adapter designed to transition between PEX tubing and female NPT threaded connections. It provides a reliable mechanical joint where PEX distribution lines meet threaded valves, manifolds, or other threaded fittings in a potable water system. The adapter is manufactured from lead-free brass, meeting current requirements for use in drinking water applications. Licensed plumbers and pipefitters install this fitting during new construction and remodel work where PEX-to-threaded transitions are required.

This adapter is suited for residential and light commercial plumbing systems that use PEX as the primary distribution pipe. Common install scenarios include connecting PEX supply runs to threaded shutoff valves, boiler connections, water heater ports, and manifold inlets. The 1-inch size handles main distribution lines and larger branch runs. Domestic manufacture supports compliance requirements for public and government-funded construction projects where country-of-origin documentation is required.

Key Features

• Lead-free brass construction for potable water compliance
• 1-inch PEX inlet transitions to 1-inch female NPT thread
• Domestically manufactured for projects requiring domestic material sourcing
• Compatible with standard PEX expansion and crimp installation methods appropriate to the UPONOR system

Compatibility

Designed as an OEM-style replacement or system fitting for 1-inch PEX plumbing installations requiring a female NPT threaded outlet connection.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and applicable IPC or IRC provisions governing PEX systems. Shut off the water supply and depressurize the line before installing any fitting. Use the correct PEX expansion or crimp tool specified for the tubing and fitting size to ensure a leak-free joint. Inspect the female NPT threads for debris and apply an approved thread sealant before making up the threaded connection.

Technical Specifications

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

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: LF4571010