Cyclone symbol
Also called Cyclone separator, Hydrocyclone
A cyclone separates solids or droplets from a gas or liquid by spinning the flow, which throws the heavier material to the wall and down to the outlet.
What the cyclone symbol means
A cyclone separates solids or droplets from a gas or liquid by spinning the flow, which throws the heavier material to the wall and down to the outlet.
How it is drawn
A short cylinder on top of a long cone, with a tangential inlet and outlets at the top and bottom.
The cyclone symbol in each standard
Drawn as on most US-style legend sheets.
German (DIN): Zyklonabscheider. See DIN P&ID symbols.
Where you see it on a P&ID
In FCC units, dust collection, sand removal and produced water treatment.
Tag codes
The cyclone is commonly tagged:
- CY
- S
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 cyclone symbol look like on a P&ID?
A short cylinder on top of a long cone, with a tangential inlet and outlets at the top and bottom.
What is a cyclone used for?
A cyclone separates solids or droplets from a gas or liquid by spinning the flow, which throws the heavier material to the wall and down to the outlet. You will find it in FCC units, dust collection, sand removal and produced water treatment.
What tag does a cyclone have?
It is commonly tagged CY, S. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the cyclone symbol the same in ISA and ISO?
No. A separator outline with a spiral inside. The ISO 10628-2 registration number is X2618. Always check the legend sheets at the front of the P&ID set.
What is the cyclone called in German?
Zyklonabscheider. 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