Mueller Streamline COREDFTGC1141 Copper Reducing Coupling

Product Description

The MUELLER STREAMLINE COREDFTGC1141 is a copper reducing coupling designed to connect two copper pipes of different diameters in a sweat-solder plumbing system. The fitting transitions from a 1-1/4 inch fitting-end (Ftg) inlet to a 1 inch cup-end (C) outlet, allowing a plumber to step down pipe size within a run without additional adapters. This type of reducing coupling is a standard component in residential and light commercial water supply and distribution systems. Licensed plumbers and pipefitters install this fitting using a torch and solder to create a watertight, pressure-rated joint.

This reducing coupling is suited for potable water supply lines, hydronic heating distribution piping, and general copper plumbing roughing work where a pipe size reduction is required inline. The Ftg x C end configuration means the fitting-end slips over a copper pipe or fitting hub on one side, while the cup-end receives a standard copper pipe on the other. This makes it easy to integrate into existing copper plumbing runs during new construction or repair work.

Key Features

• Reduces from 1-1/4 inch fitting-end (Ftg) to 1 inch cup-end (C) in a single fitting
• Copper construction provides corrosion resistance and long service life in water systems
• Ftg x C end configuration integrates directly into standard sweat-solder copper pipe assemblies
• Suitable for potable water, hydronic, and general plumbing distribution applications

Compatibility

Designed as an OEM-style replacement and standard-use fitting for residential and light commercial copper sweat-solder plumbing systems using 1-1/4 inch and 1 inch copper pipe.

Installation Notes

Installation is performed by a licensed plumber using standard sweat-soldering tools including a torch, lead-free solder, and flux rated for potable water service per applicable plumbing codes such as the IPC or UPC. Shut off and drain the water supply completely before cutting into an existing line. Clean all pipe ends and fitting sockets thoroughly with emery cloth and apply flux before soldering to ensure a sound joint. Allow the fitting to cool fully before restoring water pressure.

Technical Specifications

• Inlet Size: 1-1/4 inches (Ftg)
• Outlet Size: 1 inch (C)
• End Configuration: Ftg x C (Fitting End x Cup End)
• Material: Copper
• Fitting Type: Reducing Coupling
• Connection Method: Sweat Solder

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: COREDFTGC1141