Mueller Streamline W 01027 Reducing Coupling Copper

Product Description

The MUELLER STREAMLINE W 01027 is a copper reducing coupling designed to connect two pipes of different diameters in a sweat-solder (C x C) configuration. It transitions from a 1/2-inch nominal inlet to a 1/8-inch nominal outlet, allowing plumbers to reduce line size within a copper piping system. The coupling uses a standard cup-by-cup end style, requiring no special tools beyond a torch, flux, and solder. Domestically manufactured, this fitting meets the dimensional and material expectations of licensed plumbing professionals working on residential and light commercial copper systems.

This reducing coupling is used in potable water supply lines, hydronic heating distribution piping, and refrigeration or HVAC copper tubing runs where a line-size reduction is required. It is suited for concealed and exposed installations where a soldered joint is appropriate and code-permitted. Plumbers and HVAC technicians installing copper branch lines, instrument connections, or low-flow supply drops will find this fitting appropriate for tight-space reducing transitions.

Key Features

• Reduces from 1/2-inch nominal to 1/8-inch nominal in a single fitting
• C x C (cup-by-cup) end style for sweat-solder connections
• Copper construction for corrosion resistance and long service life
• Domestically manufactured
• Compatible with standard plumbing solder and flux for reliable leak-free joints

Compatibility

Designed as an OEM-style replacement and standard-use fitting for copper sweat piping systems requiring a 1/2-inch to 1/8-inch nominal reduction.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off and drain the water supply completely before cutting into any existing line. Clean pipe ends and fitting cups thoroughly and apply flux before soldering to ensure a sound, leak-free joint. Do not overheat the fitting, as excessive heat can damage the copper and compromise the joint.

Technical Specifications

• Inlet Size: 1/2 inch nominal
• Outlet Size: 1/8 inch nominal
• End Style: C x C (Cup by Cup)
• Material: Copper
• Origin: Domestic

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: W 01027