Coolvent Technology

Discover the superior craftsmanship and reliability of the Ostberg Inline Fan, designed to deliver powerful and efficient air movement across residential, commercial, and industrial applications. Engineered with precision and durability in mind, this inline fan provides seamless integration into duct systems, ensuring optimal airflow control wherever it's installed.

• Advanced Fan Design
  Featuring a backward-curved impeller that optimizes airflow while minimizing noise, the Ostberg Inline Fan strikes a fine balance between performance and quiet operation.The Smart HVACBMP Systems Shop

• Robust, Weather-Resistant Construction
  Built with a galvanized steel casing and equipped with an external rotor motor, it's built to last—even in damp or outdoor environments.The Smart HVAC+1BMP Systems Shop

• Effortless Installation and Flexible Placement
  The fan’s compact footprint and flange connections allow for installation in any orientation and in tight ducting segments.The Smart HVAC+1

• Superior Technical Performance
  Delivers high static pressure and airflow, ideal for overcoming resistance in long or complex duct runs.The Smart HVAC+1

• Low Noise & Built-In Motor Protection
  Designed for quiet operation and featuring integrated thermal protection and IP44-rated housing for added tooless safety and longevity.BMP Systems ShopThe Smart HVAC

• Moisture Tolerance & Reliability
  Excellent resistance to humidity, making it a dependable choice for environments like kitchens, bathrooms, or outdoor installations.The Smart HVAC

1. Circular Inline Fan (CK Series)

   • Available in diameters ranging from 100 mm (4") up to 315 mm (12"), the CK series offers straight-through airflow and high capacity.The Smart HVAC

   • Example: CK 315 B, with backward-curved blades, maintenance-free sealed ball bearings, IP44 junction box, and galvanized housing. Ideal for high-efficiency, low-noise applications.BMP Systems Shop

2. Rectangular Inline Fan (RK / RKB Series)

   • Fits rectangular ducting with sizes from 400×200 mm up to 1000×500 mm, available in both forward-curved (RK) and backward-curved (RKB) impeller styles.The Smart HVAC

   • Compact casing, easy-flange connections, and strong performance in terms of airflow and install flexibility.The Smart HVAC

• HVAC systems requiring efficient air circulation and precise pressure control

• Ventilation for bathrooms, kitchens, and damp areas, thanks to robust weather resistance

• Industrial duct systems with extended run lengths or demanding airflow requirements

• Environments needing quiet, continuous ventilation—for example, offices or residential spaces

The Circular Duct Inline Fan is designed to provide efficient air movement and ventilation in HVAC systems, commercial buildings, residential applications, and light industrial environments. Its compact, cylindrical design allows for easy integration directly into circular ductwork, offering a seamless solution for both air supply and exhaust applications.

The fan features a robust mild steel or corrosion-resistant alloy casing, engineered for durability and stable performance in continuous operation. The aerodynamically designed impeller ensures high-efficiency airflow with low noise generation, making it ideal for use in offices, homes, shops, laboratories, and clean rooms.

Powered by a high-efficiency IE2-rated electric motor, the fan delivers reliable performance with low energy consumption. It is supplied complete with:

• Circular inlet and outlet connections, allowing easy integration into standard duct systems.

• Vibration isolators to reduce operational noise and mechanical stress.

• Protective bird screens or mesh guards for operator safety.

• Mounting brackets or supports for stable installation.

For enhanced durability, the fan is finished with two coats of primer and two coats of enamel paint, providing resistance to dust, moisture, and environmental corrosion.

Typical applications of the Circular Duct Inline Fan include residential ventilation, kitchen exhaust systems, air conditioning duct boosting, smoke extraction, small industrial process ventilation, and air circulation in confined spaces.