Nibco B072900 Cast Copper 90 Union Elbow 1 Inch C X M

Product Description

The NIBCO B072900 is a cast copper 90-degree union elbow designed for pressure piping applications in plumbing and mechanical systems. It features a C x M (sweat cup by male threaded) end connection, allowing it to transition between a soldered copper joint and a male threaded fitting in a single component. Sized at 1 inch, it is built to ASTM B584 and ISO standards, making it suitable for systems requiring verified dimensional and material compliance. Licensed plumbers and pipefitters install this type of fitting during new construction and retrofit work on copper distribution systems.

This fitting is used in residential and light commercial plumbing systems where copper pressure piping is the specified material. The 90-degree union elbow configuration is applied where a directional change is needed at a union point, simplifying disassembly and reassembly during service or equipment replacement. The C x M connection style accommodates transitions between soldered copper runs and threaded connections on valves, fixtures, or equipment inlets. It is a standard pressure fitting appropriate for hot and cold water distribution, as well as other compatible copper-piped services.

Key Features

• Cast copper construction built to ASTM B584 and ISO standards for dimensional consistency and material integrity
• 90-degree union elbow configuration allows directional change and serviceable union connection in one fitting
• C x M end connection transitions a sweat-soldered copper joint to a male threaded outlet
• 1-inch fitting size suits common residential and light commercial copper pressure piping runs
• Pressure fitting rating appropriate for standard potable water and mechanical system service pressures

Compatibility

Designed as an OEM-style pressure fitting for use with 1-inch copper pipe systems requiring a 90-degree directional change with a union elbow and C x M end connection.

Installation Notes

This fitting is installed by licensed plumbers following applicable IPC or local plumbing code requirements. Shut off and depressurize the water supply and allow all piping to cool before beginning work. The sweat cup end requires proper cleaning, flux application, and soldering technique to achieve a leak-free joint; the male threaded end should be wrapped with thread sealant tape or pipe compound before assembly. Inspect the joint after restoring pressure before closing up the work area.