Duty notes
Applications, by what the fan actually has to do
A selection is a set of trade-offs decided by the duty. These pages state what each application demands, which wheel survives it and what to measure before you ask for a price.
Choose a duty
Six duties, six different machines
Dust Collection Fan Duty
Selection and wear notes for fans on bag filters, cyclones and workshop extraction, dirty side and clean side.
Duty notes
Pneumatic Conveying Blower Duty
Dilute phase conveying duty: line velocity, material rate, travel distance, pressure and wheel choice.
Duty notes
Aeration and Water Treatment Blower Duty
Aeration, backwash and effluent duty: head from diffuser depth, density corrections, turndown and corrosion.
Duty notes
Boiler and Kiln Draft Fan Duty
Forced draft and induced draft duty on boilers, kilns and dryers, with fly ash, temperature tiers and materials.
Duty notes
Paint Booth and Spray Exhaust Duty
Overspray extraction duty: sticky loads, buildup, cleaning access, wheel choice and explosion-risk awareness.
Duty notes
Tunnel and Enclosed Space Ventilation Duty
Tunnel, car park and shaft ventilation: reversible and emergency duty, corrosion protection and the axial decision.
Duty notes
Common to all
Whatever the duty, these four decide the fan
- Density
- Airflow is volume; pressure and power follow gas density. State temperature and site altitude
- Solids
- Dust load, particle size and hardness choose the wheel and the wear protection
- Chemistry
- Gas composition chooses the material, from mild steel to titanium
- Duty cycle
- Continuous running justifies efficiency; intermittent duty justifies metal
Not sure which duty you are in
Send the airflow, pressure and temperature and we will tell you which family we would build, and why.