After sizing the mainline in your irrigation design, you've noticed that the pressure loss for your master valve is not listed in the Critical Analysis.
The master valve has most likely been mistakenly removed from your project.
1. Open our Edit Equipment / View Data tool, then select the master valve in your drawing.
2. If you see an Error accessing equipment message, your master valve has been removed from the project. If so, add the master valve back to your project.
3. Size the mainline again. You should now see the pressure loss for the master valve in the Critical Analysis.