4-72 Centrifugal Ventilation Fan
General-purpose centrifugal fan for factory ventilation, workshop exhaust, equipment-room air supply and ordinary industrial air-handling systems.
Suitable for clean air or non-corrosive gas under normal-temperature ventilation conditions. Model selection is based on airflow, total pressure, speed, drive arrangement, outlet direction and installation space.
General-Purpose Centrifugal Fan for Ordinary Industrial Ventilation
The 4-72 centrifugal ventilation fan is designed for air supply, exhaust ventilation, workshop air exchange, equipment-room heat removal and general factory ventilation. It is primarily selected for conveying ordinary air or non-corrosive gas where moderate pressure and stable airflow are required.
The final model should not be chosen by fan number alone. Required airflow, total pressure, operating temperature, medium condition, drive type, rotation direction, outlet angle and available installation space should be confirmed before quotation.
Where the 4-72 Fan Fits - and Where It Does Not
A-Type, C-Type and D-Type Configurations
A-Type Direct Drive
Compact structure with the impeller mounted directly on the motor shaft. Commonly used for smaller sizes and applications where simple installation and a reduced footprint are priorities.
C-Type Belt Drive
The fan and motor are connected through pulleys and belts. This arrangement provides more flexibility for speed matching and motor placement where the installation layout requires separation.
D-Type Coupling Drive
The motor and fan shaft are connected by coupling. It is suitable for larger capacities and applications requiring a separate bearing housing and a more robust transmission arrangement.
4-72 A-Type Reference Performance Table
The values below are reference data for preliminary selection. Final performance, motor power and outlet arrangement should be confirmed according to the required working point and actual system resistance.
| Model | Speed r/min |
Total Pressure Pa |
Airflow m³/h |
Motor Power kW |
Motor Model |
|---|---|---|---|---|---|
| 2.8A | 2900 | 606–994 | 1131–2356 | 1.5 | Y90S-2 |
| 3.2A | 2900 | 792–1300 | 1688–3517 | 2.2 | Y90L-2 |
| 3.2A | 1450 | 198–324 | 844–1758 | 1.1 | Y90S-4 |
| 3.6A | 2900 | 989–1758 | 2664–5268 | 3 | Y100L-2 |
| 3.6A | 1450 | 247–393 | 1332–2634 | 1.1 | Y90S-4 |
| 4A | 2900 | 1320–2014 | 4012–7419 | 5.5 | Y132S1-2 |
| 4A | 1450 | 329–501 | 2006–3709 | 1.1 | Y90S-4 |
| 5A | 2900 | 2019–3187 | 7728–15455 | 15 | Y160M2-2 |
| 5A | 1450 | 502–790 | 3864–7728 | 2.2 | Y100L1-4 |
| 6A | 1450 | 724–1139 | 6677–13353 | 4 | Y112M-4 |
| 6A | 960 | 317–498 | 4420–8841 | 1.5 | Y100L-6 |
Information Needed for Correct Model Selection
Required Airflow
Provide the design airflow in m³/h and the normal operating range where available.
Pressure Requirement
Provide total pressure, static pressure or the calculated resistance of the complete duct system.
Air Medium
Confirm whether the medium is clean air, dusty air, hot air, corrosive gas or another process gas.
Temperature and Altitude
Operating temperature and site altitude affect gas density, pressure and motor power calculation.
Installation Direction
Confirm rotation direction, discharge angle, inlet orientation and available installation space.
Electrical Requirement
Provide voltage, frequency, motor protection level and any project-specific brand requirement.
Typical Industrial Ventilation Applications
Factory Ventilation
General air exchange for industrial buildings, workshops and production areas.
Workshop Exhaust
Discharge of warm air, odor and ordinary process air where the medium is suitable.
Air Supply Systems
Fresh-air supply and auxiliary air delivery for ordinary industrial environments.
Equipment Rooms
Ventilation and heat-removal support for machinery rooms and utility areas.
Warehouse Air Circulation
Air circulation and exhaust support for storage areas and large enclosed spaces.
Equipment Air Handling
Supporting airflow for machinery, production equipment and general duct systems.
Available Configuration Options
| Item | Available Option | Selection Purpose |
|---|---|---|
| Drive Type | A-type, C-type or D-type | Match capacity, maintenance preference and installation layout |
| Motor | Voltage, frequency, protection level and brand options | Match local power supply and project specification |
| Rotation / Outlet | Clockwise or counter-clockwise rotation and customized discharge angle | Fit duct routing and available installation space |
| Base Frame | Standard or project-specific steel base | Support installation accuracy and site assembly |
| Accessories | Inlet damper, flexible connector, vibration isolator and guard | Improve system integration and operational safety |
Choose the Fan Series by Actual Working Condition
Alternative general ventilation series selected by actual duty point. Dust Collection Fans
For dust-laden airflow and dust collector systems. Boiler & High-Temperature Fans
For hot flue gas, boiler draft and high-temperature exhaust. Corrosion-Resistant Fans
For chemical exhaust and corrosive gas service.
4-72 Centrifugal Ventilation Fan FAQ
What is the 4-72 centrifugal fan mainly used for?
It is mainly used for factory ventilation, workshop exhaust, air supply, equipment-room ventilation and ordinary industrial air-handling systems.
Can the 4-72 fan handle dusty air?
The standard 4-72 fan is intended for clean air or non-corrosive gas. Dust concentration, particle size and abrasion level should be reviewed before using it in a dust collection system.
How do I choose between A-type, C-type and D-type?
The choice depends on fan size, speed, motor arrangement, maintenance preference and installation space. A-type is compact, C-type provides belt-drive flexibility and D-type uses a separate shaft and coupling arrangement.
What information is required for quotation?
Please provide airflow, total pressure, medium, temperature, altitude, voltage, frequency, rotation direction, discharge angle, quantity and any project-specific motor or accessory requirement.
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