4-68 Centrifugal
Ventilation Fan
The 4-68 centrifugal ventilation fan is used for factory air exchange, large building ventilation, warehouse airflow and general industrial air supply or exhaust systems that require a broad airflow range and flexible drive arrangement.
It is normally selected for clean air or non-corrosive gas. Fan size, drive type, speed, motor power, outlet direction and installation layout should be reviewed according to real airflow and total pressure demand.
Airflow Fan for Large Factory and Building Ventilation
The 4-68 centrifugal fan is positioned for industrial ventilation projects that need a wider model range and more drive choices than small general exhaust fans. It can support air supply, exhaust ventilation, workshop air exchange and large indoor airflow circulation.
This fan series is normally used for clean air or non-corrosive gas under ordinary working conditions. If the medium contains heavy dust, sticky material, high-temperature gas, corrosive gas or explosive gas, the working condition should be reviewed before choosing the fan material and motor configuration.
For replacement projects, old fan nameplate data, airflow, pressure, speed, motor power, outlet angle and site photos can help QIYUE FAN compare the current duty point and recommend a practical 4-68 fan option.
Key Data for Preliminary Selection
Choose A, C, D or B Type by Fan Size and Site Layout
The 4-68 series covers multiple drive forms. This is one of the main differences from smaller general ventilation fan selections. The drive type affects fan structure, speed range, maintenance space and motor arrangement.
When 4-68 Fits and When to Review Another Fan Series
4-68 Fan Performance Range
The following range is used for preliminary model comparison. Final selection should be confirmed according to actual airflow, total pressure, duct resistance, working medium, motor configuration and site layout.
Note: Detailed performance table can be checked after the required airflow, pressure and working condition are confirmed. For special gas conditions, please review the suitable fan series before quotation.
Information Needed for 4-68 Fan Selection
To select a 4-68 centrifugal ventilation fan, the working point should be confirmed first. The same model can have different performance under different speeds and drive arrangements.
1. Air Volume
Required airflow or existing fan air volume.
2. Total Pressure
Required pressure, duct resistance, filter loss and outlet resistance.
3. Medium Condition
Clean air, temperature, dust content, humidity and any corrosive gas risk.
4. Installation Layout
Drive type, rotation direction, outlet angle, base frame and motor position.
Typical Uses of 4-68 Centrifugal Fans
Factory Ventilation
Air supply and exhaust support for industrial plants and production areas.
Large Building Ventilation
Air exchange for halls, large indoor spaces and supporting ventilation systems.
Warehouse Air Circulation
Continuous airflow support for storage areas and logistics buildings.
Equipment Room Exhaust
Heat discharge and air replacement for machinery rooms and auxiliary spaces.
General Air Supply
Fresh air delivery for ordinary industrial ventilation systems.
Replacement Projects
Replacement of existing fans after checking model, airflow, pressure and layout.
Continue Selection by Working Condition
For workshop air exchange, heat removal and general ventilation planning. Centrifugal Fans
Review other centrifugal fan series by airflow and pressure range. 4-72 Centrifugal Ventilation Fan
For general workshop ventilation and ordinary air supply. 4-2×72 Double Inlet Fan
For large-volume centralized air handling and double-inlet airflow.
FAQ About 4-68 Centrifugal Ventilation Fan
What is the 4-68 centrifugal ventilation fan used for?
It is used for factory ventilation, workshop air exchange, warehouse airflow, large building ventilation and general industrial air supply or exhaust.
How is 4-68 different from smaller general ventilation fans?
The 4-68 series covers more drive types and a wider airflow range, making it suitable for larger ventilation systems and different installation layouts.
Can 4-68 be used for dusty or corrosive gas?
Standard 4-68 fans are mainly for clean air or non-corrosive gas. Dusty, hot or corrosive gas conditions should be reviewed before selecting material and motor configuration.
What information should I send before quotation?
Please send airflow, pressure, medium, temperature, duct layout, drive preference, rotation direction, outlet angle, voltage, frequency and quantity.
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