How do low- and high-pressure fans differ?
Different series are designed for different airflow and pressure regions. “High pressure” does not mean more suitable for every application; the required operating point determines selection.
CENTRIFUGAL FAN SERIES
Select a centrifugal fan for its operating point
Centrifugal fan selection considers the required airflow and system pressure together. Access technical tables and performance curves for the YRD, YHF, YRO, YRY and YMN series.
What is a centrifugal fan?
A centrifugal or radial fan draws air into the centre and directs it radially towards the casing outlet. The Turkish term “salyangoz fan” refers to its scroll-shaped casing. Selection depends on the required airflow and pressure, not just appearance or diameter.
Compare series and catalogue models
| Fan family | Series | Model count |
|---|---|---|
| Low pressure | YRD 160 · YRD 120 · YHF | 75 |
| Medium pressure | YRD 80 · YRO 50 | 54 |
| High pressure | YRO 40 · YRY 36 | 31 |
| Material handling | YMN | 22 |
Model counts describe the online selection data; they are not stock or lead-time information. Product pages let you read technical tables, select a series and model, and inspect the performance curve.
How should you use the performance curve?
- Treat required airflow and system pressure as a single operating point.
- Include site altitude and operating temperature in the selection tool.
- Review pressure and power on the model curve at the required airflow.
- Include conveyed material, casing and connection requirements in the technical assessment.
What information is needed for a quotation?
Preparing the following information helps us assess your application and the appropriate product family. If a value is unavailable, describe the existing installation rather than guessing.
- Required airflow (m³/h) and system pressure (Pa), or a description of the application if these are not yet known.
- Process temperature, site altitude and operating schedule.
- Properties of the air or conveyed material, including dust type and moisture where relevant.
- Existing fan nameplate, duct dimensions, a layout sketch and relevant photographs.
Frequently asked questions
Can any centrifugal fan convey material?
Conveyed material, particle properties and process conditions require separate assessment. Explore the YMN material-handling family and its technical data for these applications.
Why can a table value differ from a point on the curve?
The table presents catalogue model information. The curve shows pressure and power at the selected airflow. Comparisons must use the same operating point.