Spec driven with the option to turn this feature OFF. When you choose to use pipe specs, the application automatically extracts valve data from the spec files. AutoFLOW includes all the required functions to generate P IDs. The equipment section contains a comprehensive set of symbols and equipment drafting functions. The instrumentation section covers instrument equipment, balloons and linetypes. The valve sections includes all types of valves, PSVs, control valves and actuators.