Nibco B025600 Cast Copper Adapter 1-1/4 X 2 in C X F

Product Description

The NIBCO B025600 is a cast copper pipe adapter designed to transition between a 1-1/4 inch copper sweat (C) connection and a 2 inch female (F) threaded connection. This pressure-rated fitting is used in plumbing and mechanical piping systems where a size change or a copper-to-threaded joint is required. Cast copper construction provides durability and reliable leak resistance under standard service pressures. Licensed plumbers and pipefitters are the primary installers of this fitting type in both new construction and retrofit applications.

This adapter is suited for residential and light commercial plumbing systems where copper supply or distribution piping must connect to a female-threaded fitting, valve, or equipment port. The C x F end configuration allows the sweat end to be soldered directly onto copper tubing while the threaded female end accepts a male-threaded pipe or fitting. It is a pressure fitting rated for typical domestic water supply service conditions.

Key Features

• Cast copper construction for strength and corrosion resistance in water service applications
• 1-1/4 inch sweat (C) inlet to 2 inch female threaded (F) outlet configuration
• Pressure fitting style rated for standard domestic plumbing service
• Compact single-unit fitting — no additional reducers or adapters required for this transition
• Compatible with standard copper tubing and NPT-threaded components

Compatibility

Designed as an OEM-style pressure fitting for copper plumbing systems requiring a 1-1/4 inch sweat to 2 inch female threaded transition in residential or commercial piping applications.

Installation Notes

Installation is performed by a licensed plumber following applicable IPC or local plumbing code requirements. Shut off the water supply and fully depressurize and drain the line before soldering. The sweat end requires proper flux application and lead-free solder per code; the female threaded end should be mated with an appropriate thread sealant or tape to ensure a leak-free joint. Do not overtighten threaded connections or apply heat near pre-assembled threaded components.