Autocad Plant 3d Iso | Symbol Skey

3D Part Property (SKEY) -> ISO Symbol Map -> 2D Block in IsoSymbols.dwg

If the SKEY is missing or does not match a block in the symbol library, the ISO engine draws a default box or an "unknown" symbol (usually a question mark or a blank circle). autocad plant 3d iso symbol skey

Pro Tip: You can also map SKEYs via the PlantPartConvert command or by editing the PartData.xls spreadsheet directly, though the Spec Editor is safest. 3D Part Property (SKEY) -> ISO Symbol Map

If you have ever opened an isometric drawing in AutoCAD Plant 3D and wondered, “How does the software know to draw a gate valve as two triangles and a ball valve as a circle?” — the answer is a small but powerful text string called the SKEY. Pro Tip: You can also map SKEYs via

The Symbol Key (SKEY) is the invisible link between your 3D model’s specification and the 2D representation on an isometric drawing. Misunderstand the SKEY, and your isometrics will look chaotic. Master it, and you gain complete control over your project’s deliverables.

In this post, we’ll break down what SKEYs are, how they work, and how to customize them for your plant design projects.

<SymbolDef>
  <Name>Gate Valve (GAV)</Name>
  <Skey>GAV</Skey>
  <BlockName>Gate Valve</BlockName>
  <Description>Gate valve, general</Description>
  <Annotation>VALVE</Annotation>
</SymbolDef>

The process connects the 3D model to the 2D output. It works in three steps: