Mueller Streamline CORED1218 Copper Reducing Coupling

Product Description

The MUELLER STREAMLINE CORED1218 is a copper reducing coupling designed to connect two copper tubes of different diameters in a sweat-solder (C x C) configuration. It transitions from a 1/2-inch end to a 1/8-inch end, allowing plumbers and HVAC technicians to reduce line size within a system without additional adapters. The coupling uses standard copper-to-copper solder joints on both ends, making it compatible with common torch brazing and soft-solder installation methods. It is a compact, reliable fitting used in refrigeration, plumbing, and HVAC piping assemblies where a clean, leak-free reduction is required.

This reducing coupling suits residential and light commercial applications where copper tubing runs require a size transition. Typical install scenarios include domestic water supply lines, drain and vent piping, HVAC refrigerant line segments, and hydronic systems. The C x C end configuration means both connections are sweat-soldered, making it a straightforward choice for licensed plumbers and HVAC technicians working with standard copper tubing installations.

Key Features

• Reduces from 1/2-inch to 1/8-inch in a single fitting, eliminating extra adapters
• C x C (sweat-solder) end connections on both sides for standard torch installation
• Copper construction provides corrosion resistance and reliable joint integrity
• Compact profile suits tight spaces in plumbing and HVAC piping runs

Compatibility

Designed as an OEM-style replacement and standard-use fitting for copper tubing systems requiring a 1/2-inch to 1/8-inch reduction with sweat-solder end connections.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician following applicable local plumbing codes and IFGC or IPC guidelines. Shut off and depressurize the water or refrigerant line before cutting and fitting. Clean and flux all mating tube ends thoroughly before soldering to ensure a leak-free joint. Do not apply heat directly to flux residue left on finished joints; clean after soldering per standard practice.

Technical Specifications

• End Connection Type: C x C (Sweat Solder)
• Inlet Size: 1/2 inches
• Outlet Size: 1/8 inches
• Material: Copper
• Fitting Type: Reducing Coupling

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: CORED1218