Nibco B026350 Cast Copper Adapter 2x1-1/4 in C X F

Product Description

The NIBCO B026350 is a cast copper pipe adapter designed to transition between a 2-inch copper sweat (C) connection and a 1-1/4-inch female (F) threaded connection. This pressure-rated fitting is used to reduce pipe diameter while changing the end connection type from solder to threaded in a single fitting. Cast copper construction provides reliable corrosion resistance and durability in potable water, hydronic heating, and general plumbing pressure systems. The fitting weighs 0.81 pounds and ships individually. Licensed plumbers and pipefitters are the primary installers of this type of fitting in both new construction and retrofit applications.

This adapter is suited for residential and light commercial plumbing systems where a copper sweat line must connect to a female NPT threaded component. Typical applications include connecting copper distribution lines to threaded valves, pumps, manifolds, or equipment inlets. The C x F configuration makes it a common choice when transitioning from soldered copper piping to a threaded iron or brass fitting. It is sold and packaged as a single unit.

Key Features

• Cast copper construction for corrosion resistance in plumbing and hydronic systems
• 2-inch sweat (C) inlet transitions to 1-1/4-inch female NPT (F) outlet
• Pressure fitting rated for standard plumbing service pressures
• Reduces pipe diameter while changing connection type in a single fitting
• Individual unit packaging — no breakpack required

Compatibility

Designed as an OEM-style replacement and standard-use fitting for copper pressure piping systems requiring a sweat-to-female-threaded adapter in a 2-inch by 1-1/4-inch size configuration.

Installation Notes

Installation is performed by a licensed plumber or qualified pipefitter. Shut off and depressurize the water supply before cutting into any existing line. The copper sweat end requires proper flux application and soldering with a torch in accordance with ASTM and applicable local plumbing codes. The female threaded end should be joined to a male-threaded fitting using an approved thread sealant or PTFE tape per IPC guidelines.