Two online sources for PVC pipe fitting drawings are Mueller Industries and Charlotte Pipe and Foundry Company. These sources offer illustrations on PVC pipe fittings that include the Adapter Part 115 - Adapter Coupling, CTS Part 2100I IPS x CTS Transition Coupling and the Nut Slip Joint Plastic Threaded.
The Charlotte Pipe and Foundry Company provides its illustrations in both PDF and DWG formats, the former requiring Adobe Reader to view. Individuals can access the illustrations by going to the Resources and Support page on the company website at CharlottePipe.com. The illustrations for PVC pipes are available by clicking the Plastic tab under the Detailed Drawings heading. As of 2016, illustrations in this category include the Adapter Part 115 - Adapter Coupling, Adapter Part 123R - Hub Adapter, Cast Iron, Increaser, CTS Part 2100I IPS x CTS Transition Coupling, CTS Part 2107I IPS x CTS Transition Coupling and Adapter Part 119 - No-Hub Adapter.
Mueller Industries provides various pipe illustrations under the categories of 2-D Dimensional Drawings, 3-D CAD Drawings and Revit Models. PVC pipe illustrations in the PVC DWV Fittings category include the Nut Slip Joint Plastic Threaded, Pipe Increaser/Reducer (H x H), Drum Trap with Cleanout (H x H), Closet Flange and Return Bend.