Centrifugal pump symbol
A centrifugal pump moves liquid with a spinning impeller that throws it outwards into the casing. It is the most common pump in process plants.
What the centrifugal pump symbol means
A centrifugal pump moves liquid with a spinning impeller that throws it outwards into the casing. It is the most common pump in process plants.
How it is drawn
A circle with the suction coming in at the centre and the discharge leaving tangentially from the top, often on a small base.
Variants
- Vertical and submersible pumps drawn upright
The centrifugal pump symbol in each standard
Drawn as on most US-style legend sheets.
Pump, centrifugal type. The ISO pump is a circle with two lines meeting at the outlet. The centrifugal type adds a line through the middle. The general liquid pump, 2301, has no middle line.
ISO SVG
German (DIN): Kreiselpumpe. See DIN P&ID symbols.
Where you see it on a P&ID
On transfer, circulation, boiler feed, cooling water and product pumps, usually drawn as a duty and standby pair.
Tag codes
The centrifugal pump is commonly tagged:
- P-101A / P-101B
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 centrifugal pump symbol look like on a P&ID?
A circle with the suction coming in at the centre and the discharge leaving tangentially from the top, often on a small base.
What is a centrifugal pump used for?
A centrifugal pump moves liquid with a spinning impeller that throws it outwards into the casing. It is the most common pump in process plants. You will find it on transfer, circulation, boiler feed, cooling water and product pumps, usually drawn as a duty and standby pair.
What tag does a centrifugal pump have?
It is commonly tagged P-101A / P-101B. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the centrifugal pump symbol the same in ISA and ISO?
No. The ISO pump is a circle with two lines meeting at the outlet. The centrifugal type adds a line through the middle. The general liquid pump, 2301, has no middle line. The ISO 10628-2 registration number is 2322. Always check the legend sheets at the front of the P&ID set.
What is the centrifugal pump called in German?
Kreiselpumpe. 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