These Series of fans were developed to provide a compact, high-performance solution, eliminating the typical constraints of centrifugal fans. Their very compact dimensions and the absence of a preferential direction for the generated airflow make them suitable wherever distributed ventilation is required and high pressure losses need to be overcome, or in cases where enclosed, limited spaces need to be ventilated while generating high pressures (for example, enclosures containing electrical and electronic equipment).

The ORV Series is characterised by the presence of a conveyor housing that separates the electric motor from the airflow handled by the fan (e.g. for hot air applications [> 60°C]).

As with the other Comet small centrifugal fan families, the impellers of the OR/ORV Series can be fitted with straight, curved or aerofoil-profile blades, and can be made from carbon steel, stainless steel or aluminium, depending on mechanical or environmental requirements.

The OR and ORV Series offer compact, high-performance solutions for forced ventilation in industrial plants, where high pressure losses need to be overcome and significant pressures must be achieved in confined spaces. They are ideal for cooling heat exchangers, radiators, electrical panels and electronic equipment, and for ventilating enclosed spaces. The ORV version, thanks to the conveyor housing that separates the motor from the airflow, is suited to processes involving hot or contaminated air, while the OR Series offers maximum installation flexibility. The range of available impellers and materials makes it possible to meet mechanical and environmental requirements, ensuring reliability even under demanding operating conditions.