And this kind of diagram is mainly used for laying out a process control installation.Ī piping and instrumentation diagram displays the piping components (for example equipment, valves, reducers and so on) of an actual physical process flow and is often used in the engineering projects, such as setting up steam boilers, heat exchangers, electric boilers and more.

It presents the interconnection of process equipment and the instrumentation which is used to control the process. Piping and instrumentation diagram, also called P&ID, is a drawing in the process industry. Part 1: What is The Piping Design Diagram