A "smart" family uses parameters to drive both geometry and engineering data:
Nozzles should be hosted to the shell surface or reference planes so they move automatically when the shell diameter or length changes. 2. Connector Intelligence (The "MEP" in BIM) shell and tube heat exchanger revit family work
A simple bounding box or cylinder representing the overall footprint. Medium: General shape with nozzles and supports visible. A "smart" family uses parameters to drive both
for the cylindrical body. Ensure you lock the ends of the extrusion to your length reference planes so the shell stretches when you change the parameter. Headers and Ends shell and tube heat exchanger revit family work