What kind of fittings are used to change the direction of pipe flow?

• A. Tees
• B. Couplings
• C. Elbows
• D. Reducers

Answer: (C)

The fittings specifically designed to change the direction of pipe flow are elbows. Elbows come in different angles, most commonly 90 degrees and 45 degrees, to facilitate various changes in direction for piping systems. This feature is crucial in applications where space is limited or where a specific path for the piping is required to connect to other systems or components.

While tees are also used in piping systems, they serve a different purpose by allowing a branch line to connect to the main line. Couplings are utilized to connect two sections of pipe in a straight line, and reducers are used to connect pipes of differing diameters, allowing for a change in size but not direction. Thus, elbows are the most appropriate choice for altering the flow direction in piping systems.