Nibco B025750 Cast Copper Adapter 1-1/4 X 3/4 C X F

Product Description

The NIBCO B025750 is a cast copper pipe adapter designed to transition between 1-1/4 inch and 3/4 inch copper pipe in pressure piping systems. The end connections are configured C x F, meaning one end accepts a sweat solder cup connection and the other is a female threaded connection. Cast copper construction provides reliable performance in pressure fitting applications where dimensional consistency and leak-free joints are required. This adapter is a single-piece fitting sold individually and is a standard component in plumbing and hydronic piping work performed by licensed plumbers and pipefitters.

This adapter is used in residential and light commercial plumbing systems where a size reduction from 1-1/4 inch to 3/4 inch copper pipe is needed alongside a transition from a sweat connection to a female threaded connection. Typical applications include supply lines, domestic water distribution, and hydronic heating systems. It is suited for installations where copper-to-threaded connections are required at a point of service, equipment tie-in, or branch takeoff.

Key Features

• Cast copper construction for consistent dimensional tolerances and pressure-rated performance
• 1-1/4 inch x 3/4 inch reducing configuration for downsizing copper pipe runs
• C x F end connection combines a sweat solder cup inlet with a female threaded outlet
• Pressure fitting style rated for use in pressurized plumbing and hydronic systems
• Sold as a single unit with a minimum order quantity of 1

Compatibility

Designed as an OEM-style pressure fitting replacement or new-installation adapter for 1-1/4 inch copper pipe systems transitioning to 3/4 inch female threaded connections in standard residential and commercial plumbing applications.

Installation Notes

Installation is performed by a licensed plumber or qualified pipefitter. Shut off the water supply and relieve system pressure before cutting into any existing line. The sweat cup end requires proper flux application and soldering with appropriate lead-free solder per applicable plumbing codes including IPC requirements. The female threaded end should be wrapped with thread sealant tape or pipe dope before making up the threaded connection to ensure a leak-free joint.