Fan or blower symbol
Also called Blower
A fan or blower moves large volumes of air or gas at low pressure rise.
What the fan or blower symbol means
A fan or blower moves large volumes of air or gas at low pressure rise.
How it is drawn
A circle with curved blades inside, or a circle with a propeller.
The fan or blower symbol in each standard
Drawn as on most US-style legend sheets.
Blower, fan (general). The compressor outline with a three-blade rotor inside.
ISO SVG
German (DIN): Ventilator, Gebläse. See DIN P&ID symbols.
Where you see it on a P&ID
On air coolers, combustion air, ventilation and flue gas.
Tag codes
The fan or blower is commonly tagged:
- K
- B
- F
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 fan or blower symbol look like on a P&ID?
A circle with curved blades inside, or a circle with a propeller.
What is a fan or blower used for?
A fan or blower moves large volumes of air or gas at low pressure rise. You will find it on air coolers, combustion air, ventilation and flue gas.
What tag does a fan or blower have?
It is commonly tagged K, B, F. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the fan or blower symbol the same in ISA and ISO?
No. The compressor outline with a three-blade rotor inside. The ISO 10628-2 registration number is X8164. Always check the legend sheets at the front of the P&ID set.
What is the fan or blower called in German?
Ventilator, Gebläse. 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