Functional engineering, functional objects and the ...

P&ID vs. PFD. P&IDs may often be confused with PFD’s, or process flow diagram. P&ID’s and PFD’s generally utilize the same notation for equipment. However, they serve different purposes and provide different information. The purpose of a PFD is to show exactly what a process does during operation, and a P&ID shows all controllers, valve ... ................
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