Nibco B146100 Cast Copper Tee 3/4x3/4x1 in C X C X F

Product Description

The NIBCO B146100 is a cast copper pressure tee fitting used to create branch connections in copper piping systems. It features a 3/4 x 3/4 x 1 inch configuration with a C x C x F end connection pattern, meaning the two run ends accept sweat (solder cup) connections and the branch end accepts a female threaded connection. Cast copper construction provides durability and corrosion resistance suited for potable water, HVAC hydronic, and general plumbing pressure applications. Licensed plumbers and pipefitters install this fitting during new construction and retrofit work on copper distribution systems.

This fitting is used in residential and light commercial plumbing systems where a branch takeoff is needed from a 1-inch main line down to a 3/4-inch run or branch. The mixed end configuration makes it suitable for transitioning between sweat and threaded connections at a single point in the system, reducing the need for an additional adapter fitting. Typical applications include domestic hot and cold water distribution, hydronic heating supply and return piping, and similar copper pressure piping installations.

Key Features

• Cast copper construction for corrosion resistance in water and hydronic systems
• 3/4 x 3/4 x 1 inch tee configuration for branch connections on a larger main
• C x C x F end connections combine sweat and female threaded ports in one fitting
• Pressure fitting style rated for standard plumbing system pressures
• Compact single-piece cast body eliminates extra adapters at the branch point

Compatibility

Designed as an OEM-style replacement or new-installation fitting for copper pressure piping systems using standard sweat and female threaded connections in 3/4-inch and 1-inch nominal pipe sizes.

Installation Notes

Installation is performed by a licensed plumber in accordance with the International Plumbing Code and applicable local codes. Shut off and drain the affected piping section before cutting or soldering. Sweat ends require proper flux application, clean tubing cuts, and a propane or MAPP torch; female threaded ports require compatible male threaded fittings with appropriate thread sealant or PTFE tape. Do not over-tighten threaded connections or apply excess heat to the cast body during soldering.