I'm getting a Piping Connections Optional Properties Mismatch error message box with "Pressure Class: Component 1 is <>, Component 2 is <>". At every move of the mouse this continues to message. I tried to turn all optional property matches off in the Connections-Joints, but something is still giving me problems. We're at the conceptual level on the project so I'd really be interested in learning how to suppress all of these connection errors. Anyone have any suggestions?
IMO, the best thing to do is make sure the Pressure Classes have a value and match. Does it occur on particular components? If you create a blank drawing and drop in a pipe with a flanged valve, does it occur?