Step 1. The app will install the content to CPak Common. "C:\AutoCAD Plant 3D 2025 Content\Cpak ISCO HDPE Fittings Valves Python Content Pack". The app will automatically detect the latest version of your Autodesk® AutoCAD® Plant 3D™ installed in "C:\". 

Step 2. Launch AutoCAD Plant 3D and run the command "PLANTREGISTERCUSTOMSCRIPTS" to compile the scripts and restart the Plant 3D.

Step 3. Create a new spec and add all components from the catalog to the spec.

For more information, please check the help document in the installation folder.

A catalog support folder exists in this location:

• Windows 10/11: C:\AutoCAD Plant 3D 2025 Content\ISCO HDPE Fittings Valves Python Content Pack".

To uninstall this content pack, please go to Control Panel => Programs and Features => Select the "ISCO HDPE Fittings Valves Python Content Pack" => Uninstall