Six decades of experience manufacturing air and gas blowers, compressors and exhausters that meet the highest demands required by the market.
For over 60 years MAPRO® prodices in Italy and sells all over the world various types of machines for the compression,
suction and vacuum of gaseous fluids such as air, biogas, methane and industrial gases, including corrosive ones. Our strengths are the large experience in the execution of special machines on Customer request and the assistance in the design phases to study the most technically reliable solution.
One stage of a MAPRO® multistage centrifugal blower is generally made of:
Actually, a centrifugal blower is always used in the multistage configuration. The gas is sucked into the first stage through an inlet volute, every next single stage is linked to the former one through a return channel, and a discharge volute collects the gas from the exit of the last stage delivering it to the outlet pipe. The impellers are built with radial exit blades or backward facing blades. The radial blades allow the achievement of a higher compression ratio, whilst the impellers with backward facing blades, at fixed speed of rotation and for the same differential pressure, produce a characteristic curve with a much wider stable range.
Their main construction features are the following:
The blowers are always coupled to the electric motor via belt drives and the safety drive guards
are made of spark-free material. Centrifugal blowers are designed for rotation speeds up to 6000 revolutions/min.The combination of different types of impellers, the possibility of joining several stages in series (up to 10) and the wide range of rotation speeds allow to cover, with the same machine size, a wide range of operation.
There are no parts in relative creep during operation. Since there is no friction and therefore no lubrication is necessary, the conveyed air is not polluted. Moreover, the main advantages of using MAPRO® multistage centrifugal blowers are:
For more information on Multistage Centrifugal Blowers, please visit: Mapro International’s website.