What is considered a "long sweep" in plumbing terminology?

In plumbing terminology, a "long sweep" refers to a fitting designed to create a smooth bend in a drain line. This design is crucial for maintaining proper flow and minimizing the risk of clogs. Long sweep fittings feature a gradual curve that allows wastewater to flow more easily around the bend, reducing turbulence that can lead to blockages.

Other options relate to different plumbing components but do not capture the essence of what a long sweep is. Valves, pipe joints, and methods for joining pipes serve other functions within plumbing systems, such as controlling flow, connecting two sections of pipe, or sealing joints, respectively. Understanding the characteristics and applications of long sweep fittings helps ensure efficient drainage system design and installation.