Mueller Streamline W 01339 Copper Fitting Reducer

Product Description

The MUELLER STREAMLINE W 01339 is a copper fitting reducer designed to transition between two pipe sizes in a plumbing system. It connects a 1-inch fitting end to a 1/2-inch sweat (C) end, allowing technicians to reduce line size within a supply or distribution run. The Fitting x C configuration means one end accepts an existing fitting and the other end is a standard sweat-solder connection. This type of reducer is a standard component in residential and light commercial plumbing rough-in work and is installed by licensed plumbers and pipefitters.

This reducer is suited for potable water supply lines, hydronic distribution systems, and general copper plumbing applications where a line size change is required. The 1 x 1/2-inch size transition is one of the most common reductions in residential plumbing, typically found at branch takeoffs from main distribution lines or at fixture supply connections. The domestic designation indicates this fitting is manufactured in the United States.

Key Features

• 1 x 1/2-inch size reduction for transitioning between copper line sizes
• Fitting x C end configuration for compatibility with existing fitting sockets and sweat connections
• Copper construction for corrosion resistance and long service life in water systems
• Domestic manufacture

Compatibility

Designed as an OEM-style replacement and standard-use fitting for copper plumbing systems requiring a 1 x 1/2-inch reduction with a Fitting x C end configuration.

Installation Notes

Installation is performed by licensed plumbers using standard sweat-soldering tools including a torch, flux, and lead-free solder compliant with applicable plumbing codes such as the IPC and local authority requirements. Shut off and depressurize the water supply line and ensure pipe ends are clean, deburred, and dry before applying flux and soldering. Do not overheat the fitting, as excessive heat can damage the copper or cause solder to wick away from the joint.

Technical Specifications

• Size: 1 x 1/2 inches
• End Configuration: Fitting x C
• Material: Copper
• Origin: Domestic

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: W 01339