Nibco B031400 Cast Copper Adapter 1x2 in C X M

Product Description

The NIBCO B031400 is a cast copper pipe adapter designed to connect copper tubing on the cup (C) end to a male threaded (M) fitting on the opposite end. This adapter transitions between a 1 inch copper sweat connection and a 2 inch male threaded connection, making it a reliable choice for pressure piping systems. Constructed from cast copper, it provides the corrosion resistance and durability expected in potable water, hydronic heating, and general plumbing pressure applications. Plumbers and pipefitters install this fitting where a solder-cup-to-male-thread transition is required within a pressurized system.

This adapter is suited for residential and light commercial plumbing installations where copper pressure piping meets a threaded connection point. Typical applications include water supply lines, hydronic distribution piping, and mechanical room piping where a size transition from 1 inch to 2 inch is needed at a male-threaded takeoff. It is sized and rated as a pressure fitting, appropriate for standard domestic water pressure service.

Key Features

• Cast copper construction for corrosion resistance in potable water and hydronic systems
• 1 inch cup (C) inlet sweat-solders directly to copper tubing
• 2 inch male thread (M) outlet connects to female-threaded fittings or valves
• Pressure fitting rating suitable for standard plumbing service
• Single-piece cast construction for a consistent, leak-resistant joint

Compatibility

Designed as an OEM-style replacement or new-installation pressure fitting for copper sweat-to-male-thread transition applications in residential and commercial plumbing systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable IPC or local plumbing code requirements. Shut off and depressurize the water supply and drain the line before soldering. Clean and flux all cup-end connections thoroughly before applying heat, and allow the joint to cool completely before pressurizing. Apply thread sealant or PTFE tape to the male threaded end per code-accepted practices before making up the threaded connection.