Abbreviated as P&ID, a piping and instrumentation diagram is an articulate drawing of a processing plan that entails the piping and process equipment with its instrumentation and control machinery. It displays the piping and associated parts of a physical process flow. Such diagrams are famous in the engineering field. This is a wastewater treatment plant P&ID. You can also design your own P&ID using automakers. Click the diagram to edit it directly or create a new one from scratch.