Do I need to draw the flanges of the valve?
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If flange connection is determined for the valves in the pipeline, is it necessary to draw the flanges? I see that the previous drawings indicated the valves, but no flanges were shown; I’m a beginner and would appreciate some guidance
Process diagrams can be included or omitted. Pipe diagrams must be drawn (with scale)
Generally, flanges need not be shown in PID diagrams, but it is necessary to comply with the unified engineering regulations; pipe diagrams must be drawn, and single-line diagrams should show even the welding points of the neck flanges. The above is for discussion purposes only
It is not necessary to draw them; the valve types are already indicated in the pipeline classification table, which contains definitions of the connection methods for those valves.
It is not shown in the PID, but it must be shown in the piping diagram
There should be uniform rules regarding whether to draw certain elements or not. If a valve on the main diagram in a PID diagram has flanges, it needs to be drawn; similarly, if it doesn’t have flanges on that main diagram, it can be omitted. However, consistency is essential to avoid misunderstandings. It is necessary to draw such elements in piping diagrams, as design itself is a meticulous process that requires consistency and standardization. Because if an accident occurs in the future and an investigation is needed, it will start with the design phase. Responsibility.