Ay Mcdonald 5423-276 Pex-a Brass Insert Sweat Adapter 1 in

Product Description

The AY MCDONALD 5423-276 is a 1-inch lead-free brass insert adapter designed to transition PEX-A tubing to a male sweat (solder) copper connection. This fitting allows a licensed plumber to bridge PEX-A flexible pipe runs to copper sweat fittings without additional adapters or specialty tools beyond standard PEX expansion and sweat equipment. The lead-free brass construction meets potable water requirements, making it appropriate for domestic water supply systems in residential and light commercial applications. Its insert-style end grips the interior of the PEX-A tube after expansion, creating a reliable, watertight mechanical connection.

This adapter is used where PEX-A distribution lines must terminate at or connect to copper sweat assemblies. Common install scenarios include mixing manifold transitions, water heater connections, fixture supply rough-ins, and retrofit work where existing copper lines are being extended with PEX-A. The 1-inch size suits main distribution runs in residential systems and branch mains in small commercial builds. It is intended for use with PEX-A tubing only, not PEX-B or PEX-C, as the expansion method is specific to PEX-A material memory properties.

Key Features

• Lead-free brass construction meets NSF and Safe Drinking Water Act requirements for potable water contact
• Insert end designed for use with PEX-A expansion tooling for a secure, memory-fit connection
• Male sweat end solders to standard copper fittings using conventional torch and solder method
• 1-inch size fits main distribution and branch main applications
• Single-unit order increment allows purchase of exact quantities needed

Compatibility

Designed as an OEM-style transition fitting for 1-inch PEX-A tubing systems connecting to copper sweat piping assemblies in residential and light commercial potable water applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and depressurize the line before beginning work. Use a calibrated PEX-A expansion tool sized for 1-inch tubing to expand the PEX-A end before seating the insert; allow the tubing to recover fully around the fitting. Complete all sweat soldering on the copper end before connecting to the PEX-A side to avoid heat damage to the tubing.

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.