In pipefitting, what does the term “Tee” refer to?

• A. A fitting that allows for a straight flow of liquid
• B. A fitting that allows for a branch line to be connected to the main line at a 90-degree angle
• C. A fitting that equalizes pressure in a pipeline
• D. A type of valve used for regulating flow

Answer: (B)

In pipefitting, the term “Tee” specifically refers to a fitting that facilitates the connection of a branch line to the main pipeline at a 90-degree angle. This design allows for the flow of fluid to either continue straight through the main line or divert into the branch line, making it essential in various piping arrangements where a secondary flow path is necessary.

The shape of a Tee fitting resembles the letter “T,” which rather clearly indicates its function. This type of fitting is critical in systems where multiple branches are needed, and it is commonly used in both residential and industrial applications. Understanding the function of a Tee is fundamental for anyone working in pipefitting, as it is one of the most common fittings encountered in the field.