This Process Flow Diagram outlines the steps involved in a process from start to finish. It includes the inputs, outputs, and tasks that are necessary to complete the process. It also provides a visual representation of the sequence of events and the relationships between them. The diagram can be used to identify
From Wikipedia
A process flow diagram (PFD) is a diagram commonly used in chemical and process engineering to indicate the general flow of plant processes and equipment. The PFD displays the relationship between major equipment of a plant facility and does not show minor details such as piping details and designations. Another commonly used term for a PFD is process flowsheet. It is the key document in process design.