The industrial sector is a world made up of various elements that, when combined, ensure the development of a product. There are many productive fields, from food to mechanics, from metal processing to the processing of materials that make up objects functional for everyday life. However, regardless of the final result, the production chain revolves around tools among which we also find the extraction tower. torrino di estrazioneLet's see what it is and how this component represents a necessary element in certain companies. So, characterization and purpose of what in many cases is much more than a mere extractor.

What is an extraction tower

After making a necessary introduction to the topic, let's first examine the meaning of the term in question: the extraction tower. This term refers to a system used in industries for the low-pressure suction of certain volumes of air. This component is often noticed at first glance but many are unaware that it is defined in this way. To put it simply and less technically, the extraction tower is nothing more than that mushroom-shaped object that is usually connected to flues or more or less complex suction systems. It is placed on the roof of a structure to convey a certain volume of low-pressure air from the inside to the outside. Therefore, as anticipated in the introductory phase, it is a very useful element, especially when talking about chemical companies or those in contact with similar materials. Here, air filtration is fundamental both for preserving the environmental working conditions and for the protection of workers, and not just for the final product. This discussion helps us understand how this industrial component, often ignored, is actually crucial for maintaining certain environmental conditions inside a workplace. Just like its placement, the extraction tower is at the pinnacle of functionality, not just in material installation. It is the extreme point of a production chain that would otherwise be unable to fulfill its task.

Composition of the extraction tower

Having understood what the extraction tower is and particularly the context of its application, let's now shift our focus to its composition. Alvanized steel and glass in back resin are the two main components of the aforementioned object. These materials are used to make the dome and the part immediately below it functional for protection against atmospheric agents. Inside, there is a motor of varying power that drives a fan useful for air suction. This is very quiet during operation, contrary to what one might think. In fact, when thinking of an industry, the immediate thought is often of the noise and chaos from which workers have to isolate themselves using specific acoustic protection devices.

The range of extraction towers

There is a wide range of extraction towers, which you can also find on our websitediffering mainly in the power of the suction motor. There are nine different models of motors, all three-phase, providing significant drawing and subsequent filtering power. Alternatively, there are also single-phase models equipped with variable speed controllers to regulate the air flow. Depending on its characteristics, the extraction tower can operate up to a maximum temperature of 200 degrees. Such delicate operating conditions can only be sustained by materials like steel and zinc. In fact, the extraction tower is a component specifically designed as explained above to operate without any problems under the mentioned conditions.

Other technical features of the extraction tower

Let's now examine other technical features of the extraction tower, in addition to those listed so far. Among these, we find a proportional weight-to-size ratio conducive to proper functioning. This also greatly facilitates its mounting on roofs and tops of structures of interest. Indeed, the lightness of the component in question is aimed not only at its use but also at its insertion and relative installation. This factor also makes the extraction tower an extremely long-lasting element. It can last many years due to the galvanized and steel coating between the inner and outer parts. This aspect also has a positive impact on the economic side, as such exquisite manufacturing does not entail additional maintenance costs.The fan housed inside is perfectly stabilized to ensure there are no oscillations or unexpected movements. The motor powering it, being of great power in the vast majority of models, drives the fan at a high speed. This would affect the correct aspiration process if the aforementioned fan were not balanced. Not to mention the further impact on the quietness of the suction mechanism, always related to stabilization. In short, from what can be gleaned about the characterization and constitution of the tower, we are undoubtedly talking about a tool of artisanal excellence. A component that is made and designed not only for the task it must perform, but also for the protection and safeguarding of its usage conditions. The better the quality of its parts (motor, fan, etc.), the more likely it is to withstand the years. All this without having to resort to corrective and maintenance interventions, which are often not only costly but also invasive and not entirely effective. The extraction tower is therefore a key object in various types of industrial production, as it represents not just a mere air filtration and suction system, but an indispensable means for the protection of a work environment. Especially when the latter involves materials or chemical compounds, often releasing residues and fumes that absolutely need to be evacuated.

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Work environments play a crucial role in the daily lives of millions of people worldwide. From the industrial sector to the modern office, ensuring a healthy and safe work environment is a priority for companies. One fundamental aspect of achieving this goal is controlling the air quality within these environments.

In industrial sectors, especially those involving chemical production, metal processing, or the pharmaceutical industry, air control becomes even more critical for the safety of workers. The presence of hazardous chemicals or fine dust requires advanced ventilation, filtration, and emission detection systems to prevent any exposure that could be harmful to workers' health. These measures are essential to prevent accidents, illnesses, and long-term health issues.

What features should a good industrial fan have?

A good industrial fan should first and foremost be made of high-quality materials, including strong, durable, and long-lasting welds and constructions. In addition, the motor should be powerful enough to generate the force required to rotate the blades at a certain speed. The higher the power, the longer the fan's performance will last.

What to look for when choosing the best fans for industrial warehouses?

Having discussed the characteristics of the materials that should make up an excellent industrial fan, let's delve into the topic in more detail. Let's take a closer look at the details to consider when choosing such equipment for industrial warehouses. The robustness and compositional compactness of these fans are the first aspects to look at during the engineering and assembly phase. It should endure over time, as highlighted in the above paragraph, which is why its construction must be of top quality. When you compromise on materials, you get a subpar product that tends to decline in terms of performance over the years. Another detail to focus on is the level and value of the bearings, as with all accessori: they are essential for the proper functioning of an industrial fan, especially in companies such as foundries or steel mills where round-the-clock work puts a significant strain on fans. If they are of poor quality, they can compromise the production process.


At Meridiana Aspiratori we know that the high reliability of our products stems from a continuous commitment to achieving high-quality standards. We are a company that has adopted procedures for a proven QUALITY POLICY. Rigorous checks are carried out throughout the design and production phase to ensure the suitability of the assembled components and the performance of the finished product. Our commitment is continuous improvement and efficiency of the product.

Our commitment is a continuous effort to improve the product and its efficiency.

Active control of fans is of fundamental importance in many applications where it is necessary to regulate speed and airflow. This type of control offers various advantages depending on the context in which it is used.

Energy Efficiency: Active control allows for the adjustment of fan speed based on actual ventilation needs. This means that fans can operate at lower speeds when the demand for airflow is lower, saving energy and reducing operational costs.

Comfort and Indoor Air Quality: In building cooling and ventilation systems, active control helps maintain a comfortable indoor environment by adjusting fan speeds to avoid excessive drafts or sudden temperature fluctuations. It also helps maintain indoor air quality by effectively removing pollutants and allergens.

Noise Reduction:By reducing fan speeds when intense ventilation is not required, the noise generated by ventilation systems is also reduced. This is particularly important in noise-sensitive environments such as homes, hospitals, or offices.

Extended Fan Lifespan:The use of active control reduces wear and tear on fan components since they can operate at lower speeds with less mechanical stress when demand is low. This contributes to extending their lifespan and reducing maintenance costs.

Adaptation to Changing Conditions: Active control allows for adaptation to changing environmental conditions, such as temperature, humidity, or the presence of people in a space. This flexibility is crucial to ensuring optimal performance and a safe environment in different situations.

Enhancement of Industrial Process Performance:In industrial settings, active fan control is crucial to ensuring the proper functioning of production processes, product quality, and worker safety. It is used to control temperature, humidity, and the concentration of chemicals in the air.

At Meridiana Aspiratori we understand the importance of controlling industrial fans, which is why we rely on CEREBRO HumanDroid 4.0, a computerized brain designed to increase the safety and reliability of aspiration systems. It is a joint venture through which we pursue the same objectives, such as the constant pursuit of quality and operational efficiency.

When to suggest an alternative to centrifugal fans: axial fans

In this article we focus on the substantial differences between centrifugal and axial fans, identifying when is convenient to use the latter instead of the former.

An alternative to centrifugal fans: axial fans.

Centrifugal fans and axial fans differ in some important characteristics.

Centrifugal fans also allow the transport of very aggressive fluids with very high temperatures, which the axial fan does not allow to do.
Also, centrifugal fans are capable of delivering larger pressure drops.

On the other hand, with the axial fans is possible to obtain a greater flow rate at significantly lower purchase and installation costs than those of a centrifugal fan.

Ventilatori Assiali
Axial Fans

The axial fans are simpler to be installed than centrifugal fans because they have a smaller footprint.

Therefore, if the system transports non-aggressive fluids at low temperatures with low head losses, it is advisable to use some axial fans for fluid handling.

Meridiana Aspiratori offers to its customers a careful analysis of the cost-benefit ratio before suggesting what kind of fan can be inserted and/or replaced in a system.

Each parameter is carefully evaluated, including the size and resistance required for the transport of fluids.

Summarizing, any order requires a careful preliminary study, designed to avoid possible inconvenience and to guarantee best results and maximum satisfaction.

Our experience is a guarantee of seriousness and dedication for the customer.


Centrifugal fans are devices that move air or gas from one location to another, creating a negative pressure that draws the fluid into a filtration or ventilation system. Centrifugal fans are widely used in industry, for applications such as cooling, extraction, dust control, material handling and air exchange.

How centrifugal fans work

Centrifugal fans consist of a bladed impeller that rotates inside a drum-shaped casing. The impeller can have forward, backward or radial curved blades, depending on the type of performance required. The fluid enters the fan in an axial direction (parallel to the axis of rotation) and is accelerated by the impeller outwards, leaving the fan in a radial direction (perpendicular to the axis of rotation). The change in speed and direction of the fluid generates a change in pressure, which creates the air flow.

Advantages of centrifugal fans

Centrifugal fans offer several advantages over other types of fans, such as axial or helical fans. Among the main advantages can be mentioned:

  • High efficiency: centrifugal fans have a high efficiency, as they make best use of the mechanical energy supplied by the motor to transform it into kinetic energy of the fluid.
  • High Pressure: Centrifugal fans are capable of generating high pressure, even with low air flows. This makes them suitable for applications that require high pressure drops, such as filtration or cooling systems.
  • Low noise: centrifugal fans have a lower noise than other types of fans, as the fluid does not come into contact with the surfaces of the casing and the impeller is protected by acoustic shields.
  • Flexibility: centrifugal fans can be adjusted according to the needs of the application, by varying the rotation speed of the impeller, the number and inclination of the blades, the shape of the casing and thef connection to the system.

Meridiana Aspiratori follows the technological evolution of ventilation systems with extreme attention, welcoming and studying every innovation in order to be able to provide its customers with a cutting-edge offer that is increasingly in step with innovation in the sector.

Ventilatore centrifugo
Ventilatore centrifugo

Centrifugal fans are a pivotal component in various industrial and commercial applications such as ventilation, heating and cooling systems, and material handling. In the rapidly expanding domain of air-moving equipment, the quality and efficiency in which an air-flow system operates play a vital role in daily life. When it comes to centrifugal fans, the key component to maximize efficiency is by selecting suitable centrifugal fan accessories.This article will expand on the importance and impact of having the most relevant accessories equipped for your centrifugal fan systems.

 Types and functions of important centrifugal fan accessories

To ensure the system runs at optimum levels, safety, efficiency, and maintenance are the three primary aspects to focus on. Consequently, the centrifugal fan-related accessories are generally sorted into three categories. Let's dive into each category and outline the significance of the fundamental components


  1. Add-on Components for System Safety

Safety is of utmost paramount regardless of the specific application a centrifugal fan is performing. Thus, the range of safety-related accessories are essential to enhance the overall security without affecting daily tasks revolving around the work environment. Here are the main safety-centric accessories.

Protections uards - Commonly used fan guards and inlet/outlet guards shield the fan's rotating components, protecting users and assets from accidental contact.

Guards - Commonly used fan guards and inlet/outlet guards shield the fan's rotating components, protecting users and assets from accidental contact. Vibration Isolators - Help in reducing the transmission of vibrations to adjoined surfaces or objects, which not only deplete overall noise levels but also maintain the integrity of fan components over time. Motor Support Bases - These accessories support the fan motor, ensuring its proper alignment and optimum output potential without any compatibility is interfered by erroneous mounting or movement

Motor Support Bases - These accessories support the fan motor, ensuring its proper alignment and optimum output potential without any compatibility is interfered by erroneous mounting or movement.


  1. Controlling and Improving Efficiency

Numerous accessories are available to enhance and refine fan performance without compromising fan reliability or longevity. Such accessories depend primarily on the application type and customer requirements – yet, they are crucial parameters for maintaining overall system effectiveness. Some essential efficiency-centered enhancements to centrifugal fans include

Speed Controllers Fan's performance can be further fine-tuned, enabling the fan's and energy consumption rates to flexibly adapt as needed basis using speed controls or variable frequency drive (VFD), which is especially crucial in energy-intensive or constantly shifting industrial

DampersHelps to moderate the airflow rate and air pressure by enlarging or narrowing the fan outlet proportionally. They are beneficial for applications that have fluctuating demands, allowing frequent control of the air stream without disturbing the fan speed.


  1. Necessary maintenance and spare components

Like all other specialized industrial equipment, the centrifugal fan apparatus need regular checks and preservation through general replacement of components to guarantee optimum service life over time. Such elements, like regular centrifugal fan maintenance, are mandated by health and safety requirements, enhancing general performance stability indefinitely. Some of the valuable components deemed necessary are: filter component and bearings

Filter component

Replacement fan filters ensure a continuous flow of clean air and also limit the germs, pollutants, and particles that lead to wear on internal parts.


Since centrifugal fans can operate continuously for a prolonged duration, the bearings get subject to wear and tear. It is important to be aware of fan's lubrication intervals and know when it's replaced

In conclusion, selecting appropriate centrifugal fan accessories contributes immensely to enhancing performance efficiency, offering a safer environment, and delivering platform security over time. Decisive selections based on application necessities ensure smooth mechanics within manifold facets, adhering to industrial standards.

We at Meridiana Aspiratori operate with a multidisciplinary approach that puts our customer at the centre, starting with an in-depth analysis of his specific needs, from the organizational context and arriving at the identification of the most suitable and safest solution for optimal achievement of the final result.

The choice of one of our products is the beginning of a path shared with the customer, who from the very beginning gathers our support, in the analysis of his own need and then in the search for the most appropriate solution because, the installation of a fan, must have special attention in terms of safety and functionality.

Suction power, reliability, ease of use and silence:they are part of the guidelines we have followed, with particular attention to research and development, always focusing on innovation in continuously improving the functionality and ergonomics of the machines, but also to reduce noise, improve energy saving and develop excellent solutions according to different needs and problems in accordance with EC directives.

Meridiana Aspiratori is a historical Company and the only partner, since 1997, of the major Italian brands of electric fans, electric motors and industrial inverters in prompt delivery for Southern Italy and Islands. We also deal with the engineering of industrial suction systems, taking care of every detail and the needs of our customers because, for us, this means establishing a fiduciary relationship over time that goes beyond the simple purchase, representing a shared road to travel that meets transparency, fairness, honesty, respect, trust and innovation.

Thanks to our commitment and passion, we always succeed in guaranteeing the highest quality for our customers, always working to bring new technologies and resources to the market that can strengthen its brand and the idea of a company capable of maintaining itself at the top of the market and striving every day to continue to be the benchmark and guarantee its customers real benefits and satisfaction.

We commercialize products for industrial extraction and air treatment that are technologically advanced and developed with respect to safeguarding and sustainability. An important part of the company's policy concerns the search for means and systems capable of minimizing environmental impact.

It is our goal to maintain a high level of safety for the operator without indirectly causing pollution problems.

We turn to Italian production because we believe that quality is the fundamental principle for a company's efficiency and reliability. Our products are of high quality standard, guaranteed by materials and production strictly Made in Italy, meet all quality standards required by current regulations.

Because our mission is to find better and better solutions based on our experience and the use of new environmentally sustainable technologies, a methodology that is the basis of our company policy.

Industrial centrifugal fans are devices used to move large volumes of air or gas in industrial environments. They are called "centrifugal" because they use centrifugal force to move air or gas through the ventilation system. These fans consist of a blade rotor that rotates inside a cylindrical housing, called a "casing."

Air or gas enters the casing through an inlet nozzle located on the side of the device, then is accelerated towards the rotor, where centrifugal force pushes it outward towards the top of the casing, where it is expelled through an outlet nozzle located on the top of the device.

These fans are used in a wide range of industrial applications, including ventilation of production areas, air cleaning in purification plants, and air conditioning of workspaces. They can be designed in various shapes and sizes to fit specific application needs.




The use of industrial centrifugal fans depends on the specific requirements of the application. However, in general, they are used to move large volumes of air or gas in industrial environments.

Here are some examples of how they can be used:

  • Ventilation: centrifugal fans can be used to extract stale air or fumes produced during the production process and replace it with fresh air from outside. This improves the air quality inside the workspace, creating healthier and safer conditions for operators.
  • Air cleaning: these fans can be used in air purification plants to remove impurities or contaminants present in the air, such as dust, smoke, harmful gases, and odors.
  • Air conditioning of workspaces: centrifugal fans can be used to cool or heat the air inside the workspace, improving the thermal comfort of operators and increasing the efficiency of the production process.
  • Smoke extraction: centrifugal fans can be used to extract fumes produced during the welding process, reducing the exposure of operators to harmful substances and improving the air quality inside the workspace.

Vapor and gas extraction: these fans can be used to extract vapors or gases produced during the processing of chemicals, improving the safety of operators and the workspace environment. In any case, the use of industrial centrifugal fans must be supported by adequate design and installation of the ventilation system to ensure maximum performance and energy efficiency.

Our products

Our company offers a wide range of these products. Here are some examples:

  • CA SERIES and SR SERIES, SRQL, RLD - RL: Suction and transport of clean or slightly dusty air for various applications in industrial plants and air conditioning.
  • CB SERIES: For the suction of clean air, vapors, where large volumes of air are moved with low pressures.
  • GF SERIES: Suction and transport of clean or dusty air, even containing low quantities of sawdust, various chips, granular materials, except filamentous materials.
  • GR - RH SERIES: Suction and transport of clean or slightly dusty air. Suitable for the transport of solid materials mixed with air, chips, and sawdust with a fan not crossed by the material.
  • VC/N- VG/N - VI/N - VH/N SERIES: Suction and transport of clean air. With a fan not crossed for pneumatic transport, drying, pressurization, cooling.
  • P, SA, SC Series: For exhaust gas aspirators, used in the automatic machinery industry, plastics industry, and granulators.
  • ZA – ZB SERIES Suction and transport of very dusty air with suspended material also containing sawdust, various shavings, granular materials. ● ZC-ZD-ZM SERIES Suction and transport of very dusty air, with material in suspension, also containing sawdust, various shavings, granular materials, filamentary materials
  • SERIE ZC-ZD-ZM Aspirazione e trasporto di aria molto polverosa, con materiale in sospensione, anche contenente segatura, trucioli vari, materiali granulari, materiali filamentosi.

Meridiana Aspiratori has acquired over time technical and executive skills, whose competitive advantage lies in playing the role, not only of a supplier of high-quality products but also of unique services, such as consulting and engineering of industrial ventilation and suction systems, designed and processed based on the real needs of each individual customer.

What are the difficulties that may arise in the convective transport of hot gases,i.e. at a temperature higher than 60°C?
Fluids with a temperature greater or equal than 60°C can cause various damages to the structures that transport them.

Although steel alloy technology has made great strides, especially in the development of heat-resistant alloys, hot fluids can still cause thermal expansion and this expansion often causes irreversible deformations in the structures that carry them.

In addition to technical damages, these deformations can give rise to real accidents due to the leakage of gases, with consequent damages to environment and people.

It is therefore extremely necessary to provide to the cooling of these gases,and even to their ventilation..

Technology for ventilating hot gases

Meridiana aspiratori studied a technology which manages how to cool and, simultaneously, ventilate gases at temperatures higher than 60°C.



As shown in the figure, this technology consists of a metallic heat diffuser mounted on the fan hub. The diffuser has a small fan that allows the hot gases to pass through it.
Exactly as occurs in common computers, but in a more extended way, the contact of the gases with the heat diffuser cools the hot gases that can be put back into the convective circle forced by the fan. dal ventilatore.
As simple as it is useful, this technology represents an optimal solution to avoid structural thermal deformation phenomena.
Although the high temperature gases circulate for a short distance in the fan, the contact with the heat diffuser cools these gases very quickly, avoiding anomalous deformations,

Same as it happens in computers.

In a nutshell, our idea was precisely to apply a technology already widespread in the electronic field to successfully integrate the structures of our fans, making them effective in the forced convective transport of gases at temperatures higher than 60°C..

know how to manage both the production and financial aspects well. With this in mind, the tax credit is a facility that the State makes available to businesses for the investment of tangible and intangible assets.


Il The tax credit 4.0 helps achieve what is commonly referred to asindustria 4.0or the process of industrial automation that, thanks to the use of the internet, tends to optimize and speed up production. The aim of the latest industrial revolution is to automate and make industrial production systems more efficient and interconnected.

What is the tax credit 4.0?


While the tax credit epresents an incentive that the company can claim from the State to cover any of its debts, The tax credit 4.0which is part of the Transition 4.0 plan, concerns investments in new tangible and intangible capital goods aimed at the technological and digital transformation of the production processes of companies that produce within the State's territory.


Tra i Among the tangible assets 4.0 Industrial suction and cooling systems, if equipped with filtration, are in fact included in the tangible assets 4.0 Annex 'A' of the budget law, for which the incentive is confirmed to the extent of 50 per cent (no longer 40 per cent) of the purchase cost of the complete system with a total value of up to EUR 2.5 million.


How to apply for the tax credit?


To take advantage The tax credit 4.0it is important to take into account certain criteria and deadlines. While initially it was possible to claim this type of credit only until December 31, 2022, an extension of the bonus was established until June 2023 and, in some cases, until 2025(tangible assets 4.0 bonus).

Who is eligible for the tax credit 4.0?

There are many possible beneficiaries of the tax credit promoted by Industry 4.0. In fact, it can be accessed by all companies resident in the territory of the Stateregardless of their legal form, economic sector, size and tax regime.


However, two requirements are considered essential to enjoy this benefit. Companies must:


  • comply with workplace safety regulations
  • regularly pay workers the social security and welfare contributions to which they are contractually entitled.


You can take advantage of the tax credit 4.0 by installing an air extractor controlled by our state-of-the-art Cerebro system in your company.If you would like to learn more, please contact us for a consultation via e-mail or telephone.