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 = 600÷4.260 m3/h      |      Pt = 1.450÷4.760 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
631/A 630 132 S - 2 p 7,5 2900 10 - 16 1650 - 1450 164 100x71
711/A 710 160 M - 2 p 11 2900 10 - 20 2400 - 2045 164 100x71
712/A 710 132 M - 2 p 9 2900 10 - 18 2090 - 1755 164 100x71
801/A 800 160 L - 2 p 18,5 2900 12 - 25 2770 - 2206 164 100x71
901/A 900 180 M - 2 p 22 2950 14 - 25 3192 - 3100 184 112x80
1001/A 1000 225 M - 2 p 45 2950 20 - 40 4068 - 4000 228 180x125
1001/B 1000 250 M - 2 p 55 2950 20 - 56 4060 - 3940 228 180x125
1002/A 1000 200 L - 2 p 37 2950 18 - 45 3525 - 3440 228 180x125
1003/A 1000 200 L - 2 p 30 2950 16 - 40 3103 - 3030 228 180x125
1122/A 1120 280 S - 2 p 75 2950 25 - 71 4770 - 4600 255 200x140


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