If you are searching for the Dynamo script which will automate some part of your tasks regarding the pipe isometric view then you can check this script.
This script is able to automatically assign Mark values as unique values. Also, the user has the freedom to select just a category of Pipes, Pipes accessories or Pipe fittings or any combination of those categories. The script will automatically search for unique marks and assign them to the elements.
Also, the user will have the ability to ignore pipes with a length less than the user’s chosen value. If used, that option will not assign marks and tags to those pipes.
Please make sure that before you start using this script that you back up your 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 v.2019.2.42 GeniusLoci v.2020.8.20