Nibco B033100 Cast Copper Adapter 5 Inch C X M

Product Description

The NIBCO B033100 is a cast copper pipe adapter designed for pressure fitting applications in plumbing and hydronic systems. With a 5-inch fitting size and a C x M (copper sweat by male threaded) end connection, it transitions between a soldered copper line and a male threaded connection. Weighing 8.6 pounds, this fitting is built for durability in permanent pressure installations. Licensed plumbers and pipefitters install this adapter in both new construction and retrofit projects where a copper sweat-to-male-thread transition is required.

This adapter is suited for residential and light commercial plumbing installations where a soldered copper line must connect to a male-threaded fitting, valve, or equipment port. The C x M configuration makes it a standard choice in water supply, hydronic heating, and general pressure piping systems. It is installed by licensed plumbers following applicable IPC and local plumbing code requirements.

Key Features

• Cast copper construction for long service life in pressure piping applications
• 5-inch fitting size accommodates large-diameter copper pipe runs
• C x M end connection transitions soldered copper to male threaded fittings
• Pressure fitting style rated for permanent installation in pressurized systems
• Single-unit packaging suits both replacement and new installation jobs

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 5-inch copper pressure piping systems using standard C x M end connections.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the IPC or applicable local plumbing code. Shut off the water supply and depressurize the line before beginning work. The sweat end requires proper flux application and soldering technique; the male threaded end should be sealed with thread sealant tape or compound rated for the service conditions. Do not over-tighten the threaded connection, as cast copper fittings can crack under excessive torque.