Show Dual Flow in a Process Line - P&ID

Question

In AutoCAD P&ID, how do I show dual flow in a process line?

Answer

In P&ID a process line has only one direction of flow and this is usually indicated by the direction of Off-page Connectors and Flow Arrows on a drawing. The simplest way to represent dual flow in a line is to create a new Off-Page Connector with a double-headed arrow to show flow in/out of the drawing sheet and also to manually add flow arrows to the process line, reversing their direction as necessary using the Flip Component grip.