High efficiency reverse-blade impellers. Double stage, with connection duct.

Double-extension motor, directly coupled.

Use: for the suction of clean and dusty air. These types of fans with doubles stage, are characterized by a high out put which allows a certain saving of electric power; by using special types of fan wheels with inverted blades (negative).
They are used for giving oxygen to impure waters, for pneumatic conveyalces, in cement factories, in the mills, in “pasta” factories, in dye works (for the quick drying wool), in ceramic factories (for the pneumatic cleaning of the rooms), in chemical, iron and metallurgical industries where small and medium capacities with very high pressure are required.

The temperature of the fluid sucked in must not exceed 80°C.

Characteristics:    V = 7.500÷24.000 m3/h   |    Pt = 2.600÷4.650 kg/m2

ErP: these fans are covered by Directive 2009/125/EC.

Series APRED-APRFD-APRGD always have a specific ratio greater than 1.11. Please note that in the case of specific ratio >1,11 the Directive 2009/125/CE is applied, but these fans are not subject to the constraints of energy efficiency that it impose and therefore neither to the verification of these parameters.


Installed Motor Power
Rotation Speed
Volumetric Flow
V = m³/min
Discharge Pressure
Pt = kg/m² (mm H2O)
Inlet Flange
Outlet Flange
int. mm
901/A 900 315 M - 2 p 132 2950 140 - 200 3750 - 3400 360 315x224
901/B 900 315 M - 2 p 160 2950 140 - 280 3750 - 2750 360 315x224
902/A 900 315 S - 2 p 110 2950 125 - 180 3500 - 3170 360 315x224
902/B 900 315 M - 2 p 132 2950 125 - 250 3500 - 2600 360 315x224
1001/A 1000 355 L - 2 p 250 2950 200 - 250 4650 - 4460 405 355x250
1001/B 1000 355 L - 2 p 250 2950 200 - 315 4650 - 4090 405 355x250
1001/C 1000 355 L - 2 p 300 2950 200 - 400 4650 - 3400 405 355x250
1002/A 1000 315 M - 2 p 200 2950 160 - 225 4480 - 4160 405 355x250
1002/B 1000 355 L - 2 p 250 2950 160 - 280 4480 - 3800 405 355x250
1002/C 1000 355 L - 2 p 250 2950 160 - 355 4480 - 3220 405 355x250


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