Lasco Fittings 409015SW 1-1/2" x 1-1/2" Spigot x Slip SCH 40 PVC 90 Degree Street Sweep Elbow - This street sweep elbow is used to change the direction of flow by 90 degrees. It connects one piece of pipe to another and is meant to extend an underground irrigation system. SCH 40 PVC pipe is easy to use and install and has a maximum working temperature of 140 degrees.