Nibco B138000 Cast Copper Tee 1/2 Inch C X C X C

Product Description

The NIBCO B138000 is a cast copper supply and return tee designed for pressure fitting applications in plumbing and hydronic systems. Featuring a C x C x C end connection configuration, this 1/2-inch tee allows a branch takeoff from a continuous run of copper tubing using standard sweat soldering methods. Cast copper construction provides consistent wall thickness and reliable joint integrity under pressure. This fitting is suited for residential and light commercial plumbing systems and is typically installed by licensed plumbers or experienced mechanical contractors working with copper pipe assemblies.

The B138000 is used in supply and return line configurations where a branch connection is required without interrupting flow in the main line. Its 1/2-inch size makes it a common choice in domestic water distribution, hydronic heating loops, and similar pressure piping systems. The C x C x C sweat connection type is compatible with standard hard and soft drawn copper tubing of the same nominal size.

Key Features

• Cast copper construction meets ASTM B584 and ISO standards for pressure fitting applications
• C x C x C end connections accept standard sweat solder joints on all three ports
• 1/2-inch fitting size suits common residential and light commercial copper pipe runs
• Supply and return tee configuration supports branch takeoffs from main supply or return lines
• Compact, single-piece cast body for consistent dimensional tolerances

Compatibility

Designed as an OEM-style pressure fitting replacement for use with 1/2-inch nominal copper tubing in sweat-jointed plumbing and hydronic piping systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code and applicable local codes. Shut off and drain the water supply before cutting into any existing copper line. All mating surfaces must be cleaned, deburred, and fluxed prior to soldering to ensure a leak-free joint. Do not apply heat to a fitting that still contains water, as steam pressure can compromise the solder joint.