This version of the script is revision 3. Previous blog posts you can find on the site to see all features that the script has. Changes in this revision: The script now works for all metric units and for Revit 2021, Revit 2022 and Revit 2023.
The script requires a pipe system and insulation type from the user. Then the script will list all unique pipe sizes and for those sizes, the user needs to enter pipe insulation thickness in millimeters.
Please make sure that before you start using this script you back up the existing project model.
Also, if you want to download this (and all other scripts) with my sample files please visit the Shop page.
The script uses the following Dynamo packages: Data-Shapes