Mueller Industries BDNA-15609 Copper Adapter 1/2x3/8 Cxm

Product Description

The MUELLER INDUSTRIES BDNA-15609 is a wrot copper pipe adapter designed to transition between a 1/2-inch copper sweat (C) connection and a 3/8-inch male threaded (M) connection. Wrot copper construction provides a dense, work-hardened material suitable for soldered joints in potable water, hydronic heating, and refrigeration line applications. The outside diameters measure 5/8 inch on the sweat end and 3/8 inch on the male threaded end. This fitting is installed by licensed plumbers and HVAC technicians in both residential and light commercial piping systems where a size and connection-type transition is required.

This adapter is commonly used in residential plumbing and HVAC applications where copper supply lines must transition to threaded fittings at valves, supply stops, compression fittings, or equipment connections. The C x M configuration makes it a standard choice when connecting copper distribution lines to threaded male outlets on shut-off valves, angle stops, and similar components. It is sold individually and requires a minimum order quantity of 5 units, making it practical for service vans and job-site stock.

Key Features

• Wrot copper construction for high-density, leak-resistant soldered joints
• 1/2-inch sweat (C) inlet transitions to 3/8-inch male thread (M) outlet
• Outside diameters of 5/8 inch and 3/8 inch respectively
• Compact profile suitable for tight-clearance installations
• Compatible with standard lead-free solder and flux per potable water requirements

Compatibility

Designed as an OEM-style wrot copper adapter for residential and light commercial plumbing and HVAC piping systems requiring a 1/2-inch copper sweat to 3/8-inch male thread transition.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician. Shut off the water supply and relieve system pressure before soldering. Clean and flux both the copper tube and fitting socket thoroughly before applying heat; follow local plumbing codes and ASTM standards for lead-free solder use in potable water systems. Ensure the threaded male end is properly sealed with thread sealant tape or compound when connecting to a female-threaded fitting.