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AC Backward Centrifugal Fans (Plug Fan)

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Speed (RPM)
Sound pres level[dB(A)]
Max. Airflow [m³/h]
Max. Air pressure [Pa]

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Power input
Sound pres
Perm amb
Voltage Type Frequency Max. Airflow
Max. Air pressure
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AC Backward Centrifugal Fans, also known as Plug Fans, are high-performance air-moving devices designed for various ventilation, air conditioning, and air handling applications. They feature a backward-curved impeller design and are directly driven by an external motor, making them compact, efficient, and versatile for both supply and exhaust air applications.

1.Product Features:

  • Backward-Curved Impeller Design:

Utilizes a backward-curved impeller configuration, which provides efficient airflow performance with low noise levels and moderate to high static pressure capabilities.

  • Direct Drive Configuration:

Mounted directly onto the motor shaft without the need for a transmission or belt drive system, resulting in reduced maintenance requirements, increased efficiency, and compact installation.

  • High Airflow Rates:

Capable of delivering high volumes of air at relatively low speeds, making them suitable for applications requiring uniform air distribution and energy efficiency.

  • Compact Design:

Space-saving design allows for flexible installation in various HVAC systems, air handling units, and ducted ventilation systems with limited space constraints.

  • Robust Construction:

Built with durable materials to withstand continuous operation and harsh environmental conditions, ensuring long-term reliability and performance.

2.Application Scenarios:

  • HVAC Systems:

Used in heating, ventilation, and air conditioning (HVAC) systems to supply or exhaust air from buildings, ensuring proper air circulation, temperature control, and indoor air quality.

  • Air Handling Units (AHUs):

Integrated into air handling units to distribute conditioned air throughout buildings, providing comfort cooling or heating to occupants.

  • Commercial Kitchen Exhaust:

Employed in commercial kitchen exhaust systems to remove smoke, grease, and odors from cooking areas, maintaining a clean and safe working environment.

  • Industrial Ventilation:

Utilized in factories, warehouses, and production facilities to exhaust hot air, smoke, fumes, and other airborne contaminants, ensuring worker safety and equipment performance.

3.Company Advantages:

  • Reliability:

Our company is recognized for producing high-quality AC backward centrifugal fans that are reliable, durable, and built to withstand demanding operating conditions.

  • Expertise:

With years of experience in fan design and manufacturing, we offer comprehensive solutions tailored to our customers’ specific requirements and applications.

  • Customization Options:

We offer customizable fan solutions to meet unique performance requirements, including different sizes, airflow capacities, impeller designs, and motor options.

  • Technical Support:

Our dedicated team of engineers and technical experts provides expert support, including fan selection assistance, system integration guidance, and after-sales service, to ensure customer satisfaction.


Q: What are the advantages of using AC Backward Centrifugal Fans (Plug Fans)?

A: AC backward centrifugal fans offer efficient airflow performance, compact installation, and versatility for various ventilation and air handling applications. Their direct-drive configuration eliminates the need for belts and pulleys, reducing maintenance requirements and increasing efficiency.

Q: Can AC Backward Centrifugal Fans be used for both supply and exhaust air applications?

A: Yes, AC backward centrifugal fans are suitable for both supply and exhaust air applications. Their versatile design and backward-curved impeller configuration allow for efficient airflow performance in both directions, making them ideal for a wide range of HVAC and ventilation systems.

Q: Are AC Backward Centrifugal Fans suitable for outdoor installations?

A: Yes, we offer AC backward centrifugal fans with weatherproof enclosures and corrosion-resistant materials, making them suitable for outdoor installations. They are designed to withstand exposure to moisture, dust, and other environmental factors while maintaining reliable performance.

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