9-12 High Pressure
Centrifugal Fan
The 9-12 high pressure centrifugal fan is used when an air system must overcome long duct runs, equipment pressure loss, furnace auxiliary resistance or process air delivery requirements.
This series is selected by working point: airflow, total pressure, resistance source, medium condition, motor power, outlet direction, rotation and installation space.
Pressure Support for Long Ducts and Process Equipment
The 9-12 series is selected when the challenge is maintaining airflow after the air passes through long ducts, elbows, equipment chambers, dampers or high-resistance process points. It is not a general low-pressure ventilation fan.
This fan is often used for high pressure air supply, process ventilation, furnace auxiliary air delivery and non-corrosive gas conveying. The correct model depends on total pressure and airflow together, not only on the model number.
When the working point is close to the upper pressure range, motor power, fan speed, duct route, safety margin and continuous operation requirement should be checked before confirming the final fan.
Typical Resistance Points in a 9-12 Air System
The 9-12 fan should be selected after the main pressure-loss points are understood. A long duct system may require more pressure than a short open exhaust layout even when airflow is similar.
Check inlet loss and inlet condition.
Duct length and elbows add resistance.
Equipment pressure loss should be included.
Final pressure must still support airflow.
Where the 9-12 Fan Is Commonly Reviewed
9-12 Main Fan Sizes and Motor Options
The following performance table is for preliminary selection. Final selection should be confirmed against the actual working point, system resistance and medium condition.
| Fan No. | Speed r/min | Total Pressure Pa | Airflow m³/h | Motor Model | Power kW |
|---|---|---|---|---|---|
| 9-12 6.8 | 2930 | 11590-11740 | 1700-4460 | Y160M2-2 / Y180M-2 | 15-22 |
| 9-12 7.1 | 2900 | 12347-12739 | 2074-4990 | Y160M2-2 / Y200L1-2 | 15-30 |
| 9-12 7.4D | 2900 | 13416-13465 | 2349-6315 | Y160M2-2 / Y225M-2 | 15-45 |
| 9-12 7.7D | 2930 | 14543-14583 | 2349-6315 | Y180M-2 / Y225M-2 | 22-45 |
| 9-12 8D | 2950 | 16216-16729 | 2996-7133 | Y200L1-2 / Y250M-2 | 30-55 |
| 9-12 9D | 2970 | 20803-21719 | 4295-9039 | Y225M-2 / Y280M-2 | 45-90 |
Note: If the required pressure is close to the upper range, motor power, fan speed and safety margin should be reviewed together.
Typical 9-12 High Pressure Fan Applications
Long Duct Air Supply
Used where duct length, elbows and branch lines create clear pressure loss.
Process Equipment Air Delivery
Suitable for equipment requiring stable airflow under higher system resistance.
Industrial Forced Blowing
Applied in forced-air systems where pressure stability is more important than simple exhaust volume.
Furnace Auxiliary Air
Used as auxiliary air delivery where furnace or process resistance must be overcome.
Non-Corrosive Gas Conveying
For clean or low-dust gas conveying where the medium is non-corrosive and non-viscous.
Replacement Projects
Model comparison based on old fan data, pressure loss and installation direction.
Continue by High Pressure Fan or Application
For furnace blowing and high pressure gas conveying reference. 9-19 High Pressure Centrifugal Fan
For forced air delivery and pneumatic conveying systems. Industrial Pneumatic Conveying Air System
Review pressure loss and conveying air supply requirements. Fan Selection Support
Send airflow, pressure and working condition for preliminary review.
FAQ About 9-12 High Pressure Centrifugal Fan
What is the 9-12 high pressure centrifugal fan used for?
It is used for high pressure air supply, long duct ventilation, process equipment air delivery, furnace auxiliary air and non-corrosive gas conveying.
What airflow and pressure range does the 9-12 fan cover?
The reference airflow range is 1700-9039 m³/h, and the total pressure range is 11590-21719 Pa.
How should I confirm the working point?
Confirm airflow, total pressure or static pressure, duct resistance, medium temperature, dust content, humidity, outlet direction, rotation direction and motor voltage.
Can 9-12 be used for corrosive or sticky gas?
Standard selection is for non-corrosive and non-viscous gas. Corrosive, sticky or high-temperature gas should be reviewed before material and configuration selection.
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