Fan Accessories

Teral-Aerotech avails a wide variety of fan accessories to suit many commercial and industrial requirements.

See our comprehensive list below, but if there are any fan accessories that are not listed here then please contact us and we’ll do our best either to source it or fabricate a suitable replacement for you.


Matching flanges
Inlet or outlet dampers – parallel blade or ppposed blade
Variable inlet vanes (Viv's) to control fan performance
Guide vanes and flow straighteners
Silencers or noise attenuators
Inlet filters for dusty environment
Inlet boxes to replace inlet elbows in tight situations
Shaft seals - friction, V-ring, double lip, mechanical, Stuffing Box, Stuffing Box with gas purge
Cooling fins in cast aluminium for heat dissipation
Actuators and positioners - pneumatic or electrical
Flexible connections to reduce vibration transmission
Inlet and outlet transitions
Anti-vibration mounts - spring or rubber-in-shear
Safety mesh guards for open inlet or outlet
Lagged or cladded casings for noise / heat reduction
Split casings to facilitate transport, impeller and shaft removal
Anti-sparking and explosion-proof construction
Outlet evase to reduce velocity for static regain
Variable speed control to vary fan performance
Wear liners/plates, hard facing or thermal lining for abrasive conditions
Bearing and condition monitoring equipment
Backward withdrawal for easy access to impeller
Venturi system for conveying
Flywheel impeller to keep impeller running for a while after shut down


Discharge Silencer

Inlet Silencer

Parallel Blade Damper

Variable Inlet Vane

Opposed Blade Damper

Inlet Box


Bifurcated Fans


Long cased axial fan with motor outside the air stream. Birfurcated axial fans are designed to move large volumes of hot and/or corrosive air at low pressure. The bifurcated or 'split' casing diverts the air flow on either side of the motor compartment and rejoins again downstream, leaving the motor open to clean, ambient air outside the casing.


Bifurcated fans can be used for extracting large volumes of warm, dusty or corrosive air at relatively low pressures.




Ø310 to 1000 impeller

Speed control

Voltage variation

Pressure range



Ducted, via flanged spigots.


Cast aluminium


Motor outside the airstream allow high temperature / corrosive fumes through the fan (up to 150°C)




Single or three phase models

Motor type

Standard, outside airstream

Flow rate

50,000-70,000 m³/h