About Adding or Modifying Fittings or MvParts

AutoCAD MEP 2026 toolset lets you add fittings automatically as you lay out a run, based on the default preferences specified in the relevant domain. You can also add fittings manually and modify them to refine your layout.

To add fittings manually in a particular domain, see:

• Adding a Duct Fitting Manually
• Adding a Pipe Fitting Manually
• Adding Plumbing Fittings Manually
• Adding Cable Tray or Conduit Fittings Manually

To modify fittings in a particular domain, see:

• Modifying a Duct Fitting
• Modifying a Pipe Fitting
• Modifying Plumbing Lines and Fittings
• Modifying a Cable Tray or Conduit Fitting