The Centrifugal Fans is one equipment which gives motion to air. A rotor is made to rotate inside a compartment suitably, which disturbs the air stream and air comes out. Blowers could be designed for exact needs of air, be it volume based or pressure based or both. It could be metal or plastic fabricated or casted. Motive Powers Inc have designed many types of blowers and fans to meet specific needs.

Fabricated Fans: This design is developed using rotor blades provided with backward curve, forward curve or straight. Selection is made based on the performance expected. Direction of rotation is selected based on duet design as per process layout needs. Normally fans are designed tailor-made for capacity performance of 100 m3/hr to 1,00,000 m3/hr & pressure range from 50 to 500 mmWg. Energy consumption depends on working specifications. They are fabricated out of–

* All mild steel (M.S.)
* All aluminum
* Stainless steel (S.S.)
* All plastic
* All fibre reinforced plastic (F.R.P.)
* Combination of plastic & F.R.P.
* Combination of M.S & S.S

Working and static parts are coated with rubber or FRP lining if need arises. Rotors are well structured and balanced statically as well as dynamically. Body is front covered and the rotor is removable from back. Split casing is also suggested. Drive could be direct, V belt or greased drive.