Step 1. The app will install the content to CPak Common. "C:\AutoCAD Plant 3D 2026 Content\Cpak GF Python Valves Fittings ChlorFIT CPVC". The app will automatically detect the latest version of your Autodesk® AutoCAD® Plant 3D™ installed in "C:\". 

Step 2. Launch 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 2026 Content\GF Python Valves Fittings ChlorFIT CPVC".

To uninstall this content pack, please go to Control Panel => Programs and Features => Select the "GF Python Valves Fittings ChlorFIT CPVC" => Uninstall