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Axial fan VENTS VKF series

Axial fan VENTS VKF series

Low pressure axial fans in the steel casing with the air capacity up to 12200 m3/h (50 Hz) and up to 12400 m3/h (60 Hz) for wall mounting.

Series and modification   Number of poles   Phase   Dimension type
VENTS VKF -mounting into a vent duct   2, 4   E- single phase;
D - three phases
  200; 250; 300; 350; 400; 450; 500; 550; 630
ErP data  
Overall efficiency η,[%]
Measurement category MC
Efficiency category EC
Efficiency grade N
Variable speed drive VSD
Power [kW]
Current [A]
Air flow [m3/h]
Static pressure [Pa]
Speed [n/min-1]
Specific ratio SR

Combined supply and exhaust ventilation systems for various premises where high air capacity at relatively low system resistance is required.


The fan casing and the impeller are made of steel with polymeric coating. VKF fan is fitted with the external terminal box mounted on the fan casing.


The impellers are powered by two- or three-pole, single- or three-phase asynchronous motors with external rotor and built-in thermal overheating protection depending on the model. Ball bearings in the motor provide long service life designed for at least 40 000 hours. Motor protection rating IP 44.

Speed control

Both smooth or step speed control is performed by means of the thymistor or autotransformer controller. Several fans can be connected to one controller if the total power and operating current do not exceed the rated controller values.


VKF fan is installed into the duct by means of connecting flanges. The fan is powered through the external remote terminal box.

Power supply and installation shall be performed in compliance with the manual and wiring diagram on the terminal box.

VENTS VFK fan installation into the vent duct by means of flanges


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