Backward Inclined Forward Curved Blades

Almeco centrifugal fans with backward inclined forward curved blades


  • For clean air or air lightly charged with non-abrasive dust
  • High efficiency
  • Very low noise level
  • Excellent mechanical resistance


Arrangement Drive Max. Pressure (Pa) Max. Flow Rate (m³/s)
3J & 3Z V-belt drive 18500 50
1J & 1Z Direct drive 1500 tr/min 8000 25
1J & 1Z Direct drive 3000 tr/min 16000 15


L14S, M14S, M16S, M18S, M20S, M22S, F16S, F18S, F20S, F22S, P25S, P28S, P31S


Fans come supplied with:

  • Casing drain
  • Discharge flange
  • Inlet flange
  • Inspection door on fan casing

Other available accessories:

  • Actuator
  • Anti-vibration pads
  • Base frame
  • Discharge damper
  • Electric control
  • Electric motor
  • Flexible joint
  • Flexible sleeves (with or without deflector)
  • Frequency regulator
  • Inlet casing
  • Inlet counter flange
  • Inlet filter
  • Inlet regulator
  • Inlet screen
  • Outlet counter flange
  • Outlet screen
  • Silencer
  • Swing-out opening

Special configurations

  • Project-related modifications
  • ATEX configuration (for use in Potentially Explosive Atmospheres)
  • Gas-proof
  • Temperatures from -50 °C up to 800 °C
  • Diameters up to 3150 mm and capacities up to 1000 kW
  • Removable fan casing
  • Materials adapted to any type of gas (carbon steel, aluminium, titanium, chrome/nickel alloy, ...)
  • Coating adapted to the environment (alkyd paint, epoxy powder, galvanizing, metalizing aluminium or zinc, ebonite, cataphoresis, ...)

More about the special configurations

More about the backward inclined forward curved blades

These blades were designed in order to minimise the risk of clogging.

This blade is particularly well suited to thick anti-corrosion coatings such as ebonite.

Another advantage of this blade is its good mechanical resistance which means that it can be used at a high temperature.

The curved shape of the flare, the inlet disc and the blades provide a good flow of the fluid in the impeller. This means that efficiency and noise levels are significantly better than can be obtained with conventional radial blades.

Almeco NV-SA - Royennestraat 51, rue de la Royenne - B-7700 Moeskroen-Mouscron
Almeco Nederland BV - Postbus 32 - NL-5550 AA Valkenswaard
Almeco France SARL - 67, Rue de Luxembourg - F-59777 Euralille