A 90° elbow turns a pipe run a quarter turn — around a corner, up to a riser, or down into a trench. Schedule 40 Dura PVC in ½″, ¾″ and 1″.
Standard slip × slip elbows solvent-weld between two pipes; street elbows (spigot × slip) plug straight into another fitting to save a coupling; and reducing elbows step down a size, such as ¾″ × ½″, as they turn. Sold each or in bulk bags and boxes.