Vertical vessel symbol
Also called Drum, Pressure vessel, Separator
A vertical pressure vessel holds or separates fluids under pressure. Vertical drums suit gas-liquid separation where the liquid volume is small.
What the vertical vessel symbol means
A vertical pressure vessel holds or separates fluids under pressure. Vertical drums suit gas-liquid separation where the liquid volume is small.
How it is drawn
A tall rectangle with rounded ends, the heads, with nozzles drawn where lines connect.
The vertical vessel symbol in each standard
Drawn as on most US-style legend sheets.
Tank, vessel with dished ends. Drawn the same way. Supports have their own symbols: legs X8002, brackets X8003, skirt X8004.
German (DIN): Stehender Behälter. See DIN P&ID symbols.
Where you see it on a P&ID
As knock-out drums, scrubbers, separators, accumulators and surge drums.
Tag codes
The vertical vessel is commonly tagged:
- V
- D
Tag formats follow the project numbering procedure. For instruments, the letters follow ISA 5.1, explained on the instrument symbols page.
Related symbols
Frequently asked questions
What does the vertical vessel symbol look like on a P&ID?
A tall rectangle with rounded ends, the heads, with nozzles drawn where lines connect.
What is a vertical vessel used for?
A vertical pressure vessel holds or separates fluids under pressure. Vertical drums suit gas-liquid separation where the liquid volume is small. You will find it as knock-out drums, scrubbers, separators, accumulators and surge drums.
What tag does a vertical vessel have?
It is commonly tagged V, D. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the vertical vessel symbol the same in ISA and ISO?
Yes, ISO 10628-2 draws it the same way (2062). Companies vary the details, so always check the legend sheets at the front of the P&ID set.
What is the vertical vessel called in German?
Stehender Behälter. On a German R&I-Fließschema it is drawn to DIN EN ISO 10628-2.
- In production since 2014
- Thousands of daily users
- On MODEC FPSO projects since 2016