Magnetic drive centrifugal pumps in ATEX zones

In the industry chemistry and pharmaceutical, Risk management is an integral part of the production process, a responsibility that all stakeholders must take on.. Given the complexity of the process industry, every component installed in a plant must meet precise safety requirements, especially when operating in the presence of potentially explosive gases, vapors, or dusts. This is precisely what is meant by ATEX zone: an operating context strongly regulated by European directives that define the necessary and essential prevention measures to avoid any possibility of ignition.

In these delicate environments, the choice of the right technology and the correct configuration of the pump based on real production needs is an aspect that directly affects the safety of places and workers. Magnetic drive centrifugal pumps produced by CDR Pompe are distinguished precisely by their ability to ensure complete hermeticity of the circuit, without points of leakage or direct contact between fluid and atmosphere.

CDR designs and manufactures certified pumps for ATEX zone, supporting companies from the earliest stages of technical analysis, configuring, right from the kick-off meeting, the most suitable solution for the type of fluid, temperature, and environmental classification, up to commissioning and periodic maintenance. A skill that stems from direct experience in the most complex industrial plants and translates into real, documented safety that complies with all currently applicable European regulations.

Safety and Classification in ATEX Zones

The term ATEX is the acronym for Explosive Atmospheres and indicates All areas where the interaction between flammable substances and oxygen can generate an explosive atmosphere, resulting in a risk of blast or explosion. These conditions occur when mixtures of combustible gases, vapors, mists, or dusts accumulate in concentrations high enough to explode upon contact with an ignition source. In the industrial facility, this risk is present in tanks, reactors, pumping systems, loading and unloading lines, synthesis laboratories, and mixing areas. To give a concrete example from everyday life, The gas stations where you refuel every day are ATEX classified environments.

To manage this type of danger, the European Union has introduced two fundamental directives: the 2014/34/EU, which regulates the design and certification of equipment intended for use in explosive atmospheres, and the 1999/92/EC, which defines minimum safety requirements for workers.

The ATEX zone they are not all the same, but they are classified based on the frequency and duration of the presence of an explosive atmosphere:

• Zone 0 / Zone 20The explosive atmosphere is present continuously or for long periods. It is the most restrictive category, requiring equipment with the highest level of protection.

• Zone 1 / Zone 21the presence of an explosive atmosphere is occasional, for example during certain phases of the process or during maintenance.

• Zone 2 / Zone 22the formation of an explosive atmosphere is unlikely and, if it occurs, it is short-lived.

In each ATEX zone, the choice of pump must be consistent with the level of risk. CDR Pompe offers certified models for Zone 1 and zone 2, developed to ensure reliable operation even in the presence of highly flammable or corrosive fluids, minimizing the risk of initiation.

Advantages of magnetic drive pumps for ATEX zones

In a classified environment ATEX zone, also a minimal loss or localized overheating, or even a small spark, they can turn into a huge risk both for the plant and, above all, for the on-site operators. The Magnetic drive centrifugal pumps they represent a technologically advanced response to the work needs of ATEX zones: thanks to their mechanical seal-free design, they prevent any fluid leakage and make the circuit completely sealed.

The operating principle is simple and effective: The motor's motion is transmitted to the impeller via a magnetic coupling, with no direct contact between the parts. The absence of dynamic seals and mechanical seals eliminates the most vulnerable point of traditional pumps, drastically reducing the probability of losses or friction that could generate sparks.

The main advantages for those who use magnetic drive pumps are: ATEX zone they are multiple:

• No leaks: The complete hermetic sealing of the pump casing prevents the leakage of dangerous or flammable substances, protecting the environment and operators.

• Intrinsic Safety without mechanical seals there are no frictions or contacts that could ignite sparks, making the pump suitable for operation in classified areas.

• Reliability over time The reduced wear of internal components limits maintenance interventions, ensuring continuity of service and shorter plant downtimes.

• Regulatory compliance: The CDR Pompe models are certified for ATEX zone 1 and ATEX zone 2, fully compliant with European directives 2014/34/EU and 1999/92/EC.

Stable, quiet, durable, and compliant with the strictest Italian and European regulations, a CDR magnetic drive pump represents the safest choice for working efficiently and without service interruptions in environments where the risk of explosions is higher.

Construction materials and configurations for high-risk environments

The reliability of a pump intended to operate in any ATEX zone It depends largely on the quality of the materials used and its design configuration. CDR Pompe uses only the highest-quality components, which are resistant to corrosion and high temperatures, and above all selected according to the nature of the fluid treated. The main materials available include PVDF, ETFE, PFA and AISI 316, each with specific chemical and mechanical resistance characteristics.

For example, PVDF and ETFE offer excellent stability against strong acids and concentrated bases, while AISI 316 steel is ideal for solvents and hydrocarbons at elevated temperatures. The material selection is the result of an in-depth analysis of the process conditions conducted during the initial negotiation phase, from the operating temperature to the fluid's pH to the compatibility of the application plant with the relevant regulations.

CDR certified pumps for ATEX zone they are used for transferring complex fluids such as flammable solvents, concentrated acids and bases, aggressive chemical mixtures, and high-temperature diathermic oils. Every application requires custom configuration, where hydraulic geometry, materials, and magnetic couplings are calibrated based on the specific risk. This engineering and consulting approach, developed over decades of activity in industrial fluid management, ensures consistent performance and safety even in the most sensitive processes, where an anomaly could compromise the entire production cycle.

Guidelines for Selecting and Installing Pumps in ATEX Zones

The adoption of centrifugal pumps for ATEX zone always requires an accurate technical assessment of the entire environment and the operational process as a whole. It is not enough, in fact, that a pump complies with the required certifications: it is also necessary, may it be installed and used correctly, in accordance with the area classification and the type of fluid being handled.

Before proceeding with the installation, it is advisable to follow some essential guidelines:

• Classify the installation area correctlyIdentify whether it is Zone 0, 1, or 2 (gas) or 20, 21, or 22 (dusts), assessing the probability and duration of the explosive atmosphere's presence.

• Verify the equipment categorythe pumps intended for ATEX zone they are divided into categories (1G, 2G, 3G for gases; 1D, 2D, 3D for dusts), each with specific protection levels.

• Check material compatibilityChoosing materials resistant to the treated fluid prevents undesirable chemical reactions, corrosion, or electrostatic phenomena that could generate ignition sources.

• Ensure proper grounding and ventilationPreventing the buildup of electrostatic charges is crucial in ATEX zone, as well as keeping the pump temperature within safe limits.

• Avoid dry running: A lack of fluid can cause the magnetic assembly to overheat rapidly; CDR Pompe provides control solutions to prevent this condition.

• Predict controlled periodic maintenanceRegular inspections, verification of certifications, and monitoring of operating parameters ensure ATEX compliance and plant safety over time.

Each installation in ATEX zone requires complete documentation, from the Declaration of conformity up to instruction and maintenance manuals. CDR Pompe supports its customers at every stage of the process by providing technical consulting and dedicated training for operators.

CDR Pompe: Experience and Reliability for Systems in ATEX Zones

Choose a certified magnetic drive centrifugal pump ATEX zone This means adopting an engineering solution that combines safety, efficiency, and regulatory compliance. CDR Pompe supports companies in risk assessment and the design of systems in potentially explosive atmospheres, offering consulting services, customized configurations, and After-sales support.

Every pump is the result of a Rigorous design, laboratory verification, and attended testing which certify full compliance with European standards. The result is a stable, reliable, and durable product, capable of meeting the needs of sectors where precision and safety are essential conditions for operation.

From compliance to performance: the value of ATEX CDR pumps

Operate in ATEX zone This means managing complex processes with the understanding that every technical detail affects the safety of the entire system. The CDR Pompe magnetic drive centrifugal pumps offer a practical solution to this challenge: built with high-quality materials, designed to withstand harsh environments, and certified in accordance with European directives.

Thanks to a deep understanding of industrial processes and qualified technical service, CDR Pompe supports companies towards customized and reliable solutions. An approach that combines innovation, experience, and attention to safety, to ensure maximum protection and operational continuity in every ATEX zone.

Frequently Asked Questions

Why magnetic drive are centrifugal pumps suitable for ATEX areas?

They magnetic drive pumps are suitable for ATEX zones because they have no mechanical seals or dynamic seals. The motor’s rotation is transmitted impeller through a magnetic coupling, without direct contact. The circuit remains completely sealed, without fluid leakage and with less friction that could generate sparks or overheating.

What is the difference between ATEX zones 0, 1 and 2 and between zones 20, 21 and 22?

The difference depends on the frequency and duration of the explosive atmosphere. Zones 0 and 20: continuous presence or for long periods. Zones 1 and 21: occasional presence, for example during certain process phases or during maintenance. Zones 2 and 22: unlikely and short-lived formation. Zones 0, 1 and 2 concern gases, while zones 20, 21 and 22 concern dust.

Which European directives regulate the pumps to be installed in ATEX explosive atmospheres?

Two European directives regulate explosive atmospheres. The 2014/34/EU regulates the design and certification of equipment intended to operate in explosive atmospheres. The 1999/92/EC defines the minimum safety requirements for workers. The models CDR Pompe for ATEX zones 1 and ATEX zone 2 are certified in accordance with both.

Which materials are used for ATEX pumps and magnetic drive for chemically aggressive fluids?

The main materials are PVDF, ETFE, PFA and AISI 316 steel. PVDF and ETFE offer excellent stability with strong acids and concentrated bases. AISI 316 is indicated for solvents and hydrocarbons at high temperatures. The choice depends on operating temperature, fluid pH and compliance with plant regulations.

What should be checked before installing a centrifugal pump in an ATEX area?

Before installation, it is necessary to classify the area (zone 0, 1, 2 for gases or 20, 21, 22 for dusts) and check the category of the equipment: 1G, 2G, 3G for gases, 1D, 2D, 3D for dusts. The compatibility of the materials, earthing and ventilation must also be verified. Protection against dry operation and a periodic maintenance plan are also required.

Why should I avoid dry operation in an ATEX magnetic pump and what documentation is required?

Dry operation should be avoided because the lack of fluid can cause a rapid overheating of the magnetic group, which is dangerous in an explosive atmosphere. Solutions for controlling this condition are CDR Pompe provided. Every ATEX installation also requires comprehensive documentation, from the declaration of conformity to the instruction and maintenance manuals.