Which plumbing fittings are typically used to change the direction of pipe flow?

The correct answer focuses on elbows, tees, and bends because these fittings are specifically designed to alter the direction of fluid flow within a plumbing system. Elbows allow for a change in direction typically at a 90-degree or 45-degree angle, making them essential for redirecting pipes. Tees enable branching off in multiple directions, allowing for flow to be diverted to another line. Bends provide a smooth transition in direction, ensuring minimal turbulence and maintaining flow efficiency.

Understanding the role of these fittings is crucial for effective plumbing design, as they dictate how fluids navigate through a system. Employing the appropriate fittings helps optimize flow paths and prevent issues such as backpressure or leaks caused by abrupt changes in direction.