Nibco B029350 Cast Copper Adapter 2-1/2 in Ftg X F

Product Description

The NIBCO B029350 is a cast copper pipe adapter designed for pressure piping systems in plumbing and mechanical applications. At 2-1/2 inches, this adapter connects a fitting-end (FTG) copper tube or fitting to a female threaded (FNPT) port, making it a practical transition fitting between sweat and threaded connections. Cast from copper alloy per ASTM B584, it delivers the durability and corrosion resistance expected in potable water, hydronic heating, and general plumbing installations. Licensed plumbers and pipefitters are the primary installers for this type of fitting.

This adapter is suited for residential and light commercial pressure piping applications where a 2-1/2 inch sweat-to-female-thread transition is required. Typical scenarios include connecting copper distribution lines to threaded valves, manifolds, or equipment ports. The FTG end accepts a standard copper tube or fitting for soldering, while the F (FNPT) end threads onto a male-threaded nipple or valve body. It is sized and rated for standard pressure service in water supply and hydronic systems.

Key Features

• Cast copper alloy construction per ASTM B584 for pressure service durability
• 2-1/2 inch fitting size for larger-diameter distribution and mechanical piping
• FTG x F end connections enable sweat-to-female-thread transitions
• FNPT thread standard ensures compatibility with standard threaded fittings and valves
• Meets ASTM B584 and ISO standards for copper pressure fittings

Compatibility

Designed as an OEM-style replacement and standard-stock fitting for 2-1/2 inch copper pressure piping systems requiring an FTG x FNPT adapter configuration.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off and depressurize the system completely before cutting into any existing piping. The FTG end requires proper flux application and soldering with lead-free solder per potable water code requirements; the FNPT end should be made up with an approved thread sealant or PTFE tape. Do not overtighten the threaded connection or apply torch heat after the thread joint is assembled.