This is a heat exchanger PID diagram. P&IDs are drawings used in the process sector to represent pipe and instrumentation. All plumbing is displayed in a P&ID, together with the "physical sequence of branches, reducers, valves, equipment, instrumentation, and control interlocks." The process system is run using a P&ID since it displays the installed equipment and instrumentation as well as the pipework for the process flow. EdrawMax is the perfect tool to draw P&ID diagrams.
