Mueller Industries 15789 Copper 45 Elbow 1/8 in C X C

Product Description

The MUELLER INDUSTRIES 15789 is a wrot copper 45-degree elbow fitting designed for sweat-connection copper piping systems. Sized at 1/8 inch with a copper-to-copper (C x C) end connection, this fitting redirects flow at a 45-degree angle in tight plumbing runs where a full 90-degree turn is not practical. Wrot copper construction provides consistent wall thickness and high joint integrity, making it a reliable choice for potable water, hydronic, and refrigeration tubing applications. The 1/4-inch outside diameter corresponds to the 1/8-inch nominal pipe size. Licensed plumbers and HVAC technicians are the typical installers.

This fitting is suited for residential and light commercial plumbing and mechanical systems where 1/8-inch nominal copper tubing is used. Common applications include low-volume water supply lines, instrument connections, and small-diameter refrigeration or oil lines. Its compact form factor makes it useful in congested mechanical spaces where routing flexibility is needed without the sharp angle of a 90-degree elbow.

Key Features

• Wrot copper construction for consistent wall thickness and strong sweat joints
• 45-degree elbow angle allows gradual directional change with lower flow restriction than a 90-degree fitting
• C x C (copper-to-copper) sweat end connections compatible with standard soldering practice
• 1/8-inch nominal fitting size with 1/4-inch outside diameter
• Sold in a package quantity of 5 units

Compatibility

Designed as an OEM-style replacement and new-installation fitting for 1/8-inch nominal copper tubing systems using standard C x C sweat connections.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with applicable local plumbing codes and ASTM B88 tubing standards. Shut off and depressurize the supply line before cutting or fitting work begins. Clean and flux all mating surfaces thoroughly before applying heat, and allow the joint to cool completely before restoring pressure. Do not overheat the fitting, as excessive heat can damage the copper or compromise the joint.