Mueller Industries 15601 Copper Pipe Adapter 1/4 in C X M

Product Description

The MUELLER INDUSTRIES 15601 is a wrot copper pipe adapter designed to transition between a copper sweat (C) socket end and a male threaded (M) end. It provides a reliable, pressure-rated mechanical connection in copper piping systems used across plumbing, HVAC, and refrigeration applications. Both ends measure 1/4 inch, with an outside diameter of 3/8 inch on the sweat end and 1/4 inch on the male threaded end. Wrot copper construction delivers consistent wall thickness and high-integrity joints suitable for soldered connections. Licensed plumbers and HVAC technicians install this fitting during new construction, system retrofits, and service work where a sweat-to-thread transition is required.

This adapter is suited for residential and light commercial piping applications involving 1/4-inch copper lines. Common install scenarios include refrigerant line connections, chilled water branch lines, and potable water supply transitions where a C x M fitting is needed to connect copper tubing to a threaded component or valve. The 15601 is sold in a package quantity of 5 units, making it practical for service techs carrying field stock.

Key Features

• Wrot copper construction for consistent wall integrity and reliable solder joints
• C x M end configuration transitions sweat copper to male threaded connections
• 1/4 inch x 1/4 inch fitting size fits standard quarter-inch copper tubing
• Outside diameter of 3/8 inch on sweat end and 1/4 inch on male end
• Packaged in quantities of 5 for efficient field and shop inventory

Compatibility

Designed as an OEM-style replacement and general-use fitting for 1/4-inch copper piping systems requiring a sweat-to-male-thread transition in plumbing and HVAC applications.

Installation Notes

Installation is performed by licensed plumbers or HVAC technicians. Shut off and depressurize the line before cutting or sweating any fitting. Clean and flux both the tube and fitting socket before soldering per standard copper joining practice. Follow applicable IPC and IFGC code requirements for the specific system type and jurisdiction.