Uponor LF4525050 Male Adapter 1/2 in Pex X Mnpt Brass

Product Description

The UPONOR LF4525050 is a 1/2 inch lead-free brass male adapter designed to transition from PEX tubing to a male NPT threaded connection. This fitting is manufactured from domestic brass stock and carries a lead-free designation, making it suitable for use in potable water systems where compliance with lead-free standards is required. Plumbers and pipefitters install this adapter when connecting PEX distribution lines to threaded valves, manifolds, or fixtures. The PEX end accepts an Uponor expansion-style connection, while the male NPT end threads directly into a female-threaded fitting or valve body.

This adapter is used in residential and light commercial plumbing systems where PEX tubing is the primary distribution material. Typical applications include domestic hot and cold water supply lines, in-wall rough-in work, and connections to shut-off valves or fixture supply stops. The 1/2 inch size is the most common size in residential potable water distribution, making this fitting a high-frequency item in new construction and remodel work alike.

Key Features

• Lead-free brass construction meets potable water compliance requirements
• 1/2 inch PEX inlet transitions to 1/2 inch male NPT outlet
• Domestically manufactured brass fitting
• Compatible with Uponor PEX expansion fitting systems
• Male NPT thread allows direct connection to standard female-threaded valves and fittings

Compatibility

Designed as an OEM-style transition fitting for 1/2 inch Uponor PEX expansion systems connecting to male NPT-threaded plumbing components.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable IPC or local plumbing codes. Shut off the water supply and depressurize the line before installation. The PEX end requires the appropriate Uponor expansion tool and ring; do not attempt to install the PEX connection without the correct expansion tooling. Apply thread sealant or PTFE tape to the male NPT threads before making up the threaded connection.

Technical Specifications

• Connection Type: PEX x MNPT
• Size: 1/2 inch
• Material: Brass
• Lead-Free: Yes
• Origin: Domestic

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: LF4525050