Concentric reducer
ISO 10628-2 (groups 24-25, fittings and piping) / PIP PIC001
Drawn as
A symmetric trapezoid in the line: tall at the large end and short at the small end, with both pipe centrelines in line.
Meaning
Size change on vertical lines, or where the centreline must stay put. The sizes are written beside it (e.g. 8"x6"). In plant.json the assembler inserts reducers automatically when port sizes differ.
Variants
- Some legends use a plain triangle
- Swages (small bore, threaded or socket-weld) are drawn the same