Questions tagged [pi-diagram]

For questions relating to piping & instrumentation diagrams

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Custom User Models in Aspen Plus

I'm trying to simulate a purifier in Aspen Plus in a cryogenic system. This purifier is just meant to change the pressure of the outlet stream based on the inlet flow and pressure (we are using the ...
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Atmospheric Break

I'm working on a P&ID drawing and need to add a symbol for an "Atmospheric Break". Is there a symbol for this that I can use to represent this? Thanks in advance.
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Proper designator for a torque guard in a P&ID

What's the proper first letter designator for a torque guard in a DIN or ISO compliant P&ID? I find fist-letter designators for a few physical values (L for level, S for speed etc.) but none for ...
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What makes a good piping and instrumentation diagram tool?

A while back, I asked this question for a free Piping and Instrumentation Diagram (P&ID) software on softwarerecs.SE. I described the core features of a P&ID software thusly: Where a proper ...