Reliable valves for hydrogen technology

With the growing interest in climate-friendly energy solutions, the focus is increasingly shifting to hydrogen as a key technology. When the term “H2-ready” is used, it means that systems and components are specially designed to meet the requirements of hydrogen applications. However, it is important to note that the term “H2-ready” may merely be a marketing statement that should be checked. As an industrial valve manufacturer, we have risen to this challenge and designed our valves specifically to meet the requirements of hydrogen technology. Through targeted material selection, extensive testing and compliance with relevant norms and standards, we can ensure that our products can withstand the special conditions of hydrogen applications.

We offer a wide range of products that are specially designed for use in hydrogen applications. From ball valves and high-performance butterfly valves to double-flanged high-performance butterfly valves - at GEFA you will find the right solutions that are optimally adapted to the special properties of hydrogen. But what makes GEFA products so special?

Product features at a glance:

• Tightness: Absolute tightness on the inside and technically permanent tightness on the outside to ensure the high purity of the hydrogen.
  
  
• Material properties: High-quality, corrosion-resistant materials that can withstand the specific requirements of hydrogen, including resistance to hydrogen embrittlement.
• Pressure resistance: Developed for high-pressure applications to meet the demanding requirements of modern hydrogen technology.
  
  
• A wide range of applications: From DN 8 to DN 800, we can offer you the ideal solutions for the transportation, storage and use of hydrogen in industrial processes.

Are you curious to find out more about our expertise in the field of hydrogen? On our hydrogen page you will find detailed information, product descriptions and relevant application examples. You are also welcome to send us a message directly via the e-mail address This email address is being protected from spambots. You need JavaScript enabled to view it. or contact our hydrogen experts by telephone on +49 (0)231 61009 0.

H2-ready valves are an indispensable component of modern hydrogen technology and play a decisive role in the realization of the energy transition. GEFA is at your side as a competent partner when it comes to finding solutions that meet the highest standards.

Three-piece Ball Valve

DG1W for hydrogen applications

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High-performance Valve

HG1/7W for hydrogen applications

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Double Flange Valve

HG5 for hydrogen applications

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In numerous industries, from the chemical and petrochemical industries to food processing and power generation, there is a risk of explosion due to flammable gases, vapors or dusts. In order to minimize risks, the European ATEX directive stipulates safety requirements for systems and all fittings used in potentially explosive atmospheres.

The ATEX guideline 2014/34/EU regulates the requirements for valves that are used in potentially explosive atmospheres. It ensures that these devices are not a source of ignition and therefore guarantee safe operation in critical environments. Companies operating in such areas must only use ATEX-compliant valves in order to comply with safety regulations and avoid interruptions to operations.

ATEX divides potentially explosive atmospheres into different zones in order to categorize the risk and frequency of explosive atmospheres. For example, for gases, zone 0 describes an area in which an explosive atmosphere is present continuously or for long periods of time. Zone 1, on the other hand, describes an area in which an explosive atmosphere may occasionally occur under normal operating conditions. Zone 2 comprises areas in which an explosive atmosphere occurs only rarely and usually only for a short time.

The ATEX-certified butterfly valves in the K and HG series have been specially developed for safe use in potentially explosive atmospheres. They offer a number of advantages:

• Reliable safety: Developed and certified in accordance with ATEX requirements for use in potentially explosive atmospheres.
  
  
• Easy maintenance: Intelligent designs allow seals and components to be replaced quickly, reducing downtime.
• Long service life: Robust materials and high-quality workmanship minimize wear and increase service life.
  
  
• Optimum sealing: Prevents the escape of media to ensure safe working in hazardous environments.
  
  

In many industries, ATEX-certified butterfly valves are essential to ensure safety in potentially explosive environments. GEFA offers customized solutions that are specifically tailored to the requirements of these industries:

Safe handling of chemicals, solvents and flammable liquids in refineries and chemical production plants.

Applications on production platforms (onshore and offshore), in pipelines, tank farms and refineries.

Processing of medicines and active ingredients with explosive gases or dusts.

Use in biogas plants, hydrogen production and power plants.

Dust explosion protection in the processing of flour, sugar and spices and for alcohol vapors in distilleries and breweries.

Disposal facilities for chemicals and combustible waste and recycling of metals, plastics and electronics.

Protection during the production and processing of solvents and flammable substances.

With the ATEX butterfly valves of the K and HG series, GEFA provides reliable, durable and safe solutions for potentially explosive environments. Companies benefit from maximum safety, ease of maintenance and optimum performance in demanding industrial applications.

Butterfly Valves

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We are proud to inform you that our DG and FG series ball valves have now also received the ATEX EU type examination certificate for zone 0 IIC (explosion group; typical gas: hydrogen). This significantly increases the quality of our products, which meet the highest safety requirements.

With ATEX-certified ball valves from GEFA, you meet the strict safety requirements for ATEX Zone 0 (1G) IIC. This certification confirms that our products can be used reliably in environments with an extremely high explosion risk, such as when handling hydrogen.

• Maximum safety: Our DG and FG series ball valves offer maximum protection in ATEX Zone 0 IIC.
• Reliability: Developed to meet the stringent requirements of the hydrogen sector.
• Quality: GEFA stands for high-quality products and the highest safety standards.

If you are looking for reliable ball valves that offer you maximum safety, GEFA is your ideal partner. We can offer you the right solution, especially for demanding applications, such as use in hydrogen.

Visit our hydrogen page and find out more about our DG and FG ball valves!

Further product information on the DG can be found here:

Three-piece ball valves DG

Further product information on the DG can be found here:

Flanged ball valve FG

In a world where the efficiency and durability of machines and systems are crucial, ball valves are becoming indispensable components in industrial equipment. The DG1 ball valve with ceramic ball in particular is setting new standards in the industry.

The DG1 ball valve with ceramic ball was specially developed for use in demanding industrial environments. These environments are often characterized by abrasive media, high temperatures and aggressive chemical substances. Conventional ball valves, which are often made of stainless steel, can quickly reach their limits when exposed to extreme conditions.

In contrast, the DG1 ball valve offers a unique solution. Thanks to the use of ceramic as the main material for the ball, it offers exceptional resistance to abrasion and corrosion. This is particularly important in applications where particles are present in the medium. The ceramic ball protects the ball valve from premature wear, ensuring a longer service life and lower maintenance costs.

To better illustrate the practical benefits of the DG1 ball valve with ceramic ball, we have created an application example from zinc production with a highly abrasive medium.

Choosing the right ball valve is crucial for the efficiency and reliability of your system. With the DG1 ball valve, you are making an excellent decision. But what makes it so special?

The DG1's all ceramic ball offers outstanding durability compared to traditional stainless steel balls. Ceramic materials are known for their high hardness and strength, which enables them to withstand extremely abrasive conditions. The functionality of the ball valve is maintained over a long period of time, even when exposed to the harshest operating conditions.
In addition, this durability extends the service life of the entire system and reduces the need for frequent maintenance work. At a time when cost optimization and increased efficiency have top priority, this is a decisive advantage.

Another important factor in favor of the DG1 ball valve is the corrosion resistance of the ceramic ball. This property makes the DG1 particularly attractive for applications that work with aggressive chemical media. While conventional materials can be attacked quickly, the ceramic ball remains insensitive to many chemicals.
This feature not only extends the service life of the ball valve, but also reduces maintenance costs. Less frequent maintenance means less downtime and higher productivity for your company.

The precise design of the DG1 ensures smooth and reliable operation, even under extreme operating conditions. The ceramic ball ensures that the ball valve can be operated smoothly with minimal risk of leakage.
The DG1 also performs impressively at high pressures and temperatures. This reliability is essential in modern industrial processes where failures cannot be tolerated.

An often overlooked but important benefit of the DG1 ball valve is its sustainability. The use of durable materials reduces the need to replace the valves, which not only saves costs but also reduces the environmental impact.
If maintenance is required, the entire ball valve does not have to be disposed of, thanks to the easily replaceable internal parts. This supports companies in their efforts towards sustainable practices and helps to reduce waste.

The DG1 ball valve can be adapted to specific requirements. Whether it is different sizes, connection types or special materials - the DG1 offers solutions that are individually tailored to your needs.
The ability to customize the ball valve to meet specific requirements is a key advantage in today's dynamic industry. Companies value flexibility and adaptability in order to remain competitive.

Further product information can be found here:

GEFA ball valves DG1

Industrial progress is constantly presenting us with new challenges. Especially in safety-critical areas where chemical loads are extremely high, the selection of the right components is crucial. This is where the FGT flanged ball valve comes in - a solution that impresses with both internal durability and external elegance.

The valve industry knows how critical it is to choose the right valve for sensitive installation locations. Corrosion, aggressive media and high pressure ratios are just some of the challenges that need to be overcome. However, the FGT ball valve offers a pioneering answer to such challenges.

Areas such as the chemical industry, pharmaceuticals or petrochemical processes place high demands on the valves used, as conventional materials and designs often fail under harsh conditions. The most common problems include corrosion caused by aggressive media, which occurs particularly in chemical processing and can severely corrode both the inner and outer valve. In addition, improper stem seals often lead to leaks, allowing hazardous substances to escape in an uncontrolled manner. Another problem is the limited longevity, as materials such as painted materials cannot permanently withstand the extreme environmental influences. To meet these challenges, robust, durable and reliable solutions are needed that meet the special requirements of these industries.

What makes the FGT flanged ball valve from GEFA so special? The answer lies in a sophisticated combination of high-quality materials and advanced design technology.

Premium material selection
Instead of cast materials, the FGT uses a stainless steel body made of 1.4408, which ensures maximum corrosion resistance even in the toughest environments. At the same time, the wear and tear or damage that often occurs with painted surfaces is avoided.

Chemical resistance thanks to PFA lining
The thick-walled PFA lining (polyfluoroalkoxy) ensures unparalleled chemical resistance. The high diffusion resistance enables use in the processing of extremely aggressive media, which would quickly destroy conventional valves.

Sealing and safety
A spring-loaded stem seal with V-rings made of PTFE (polytetrafluoroethylene) offers absolute reliability. This minimizes the risk of leaks and increases safety, especially in areas that are subject to strict environmental or occupational safety regulations.

Automation made easy
Thanks to the EN ISO 5211 interface, the ball valve can be automated easily and cost-effectively. This includes the direct assembly of actuating elements and actuators, which makes processes even more efficient.

The FGT flanged ball valve is the ideal choice in demanding industrial areas. This ball valve shows its strengths particularly in environments where chemical and mechanical loads come together. It is used in the following industries, among others:

Thanks to its availability in accordance with the (EC) No 1935/2004 food safety standard, the FGT is perfect for hygiene-sensitive applications. Whether in the dairy or in beverage bottling - the chemical resistance and excellent seal guarantee the highest safety standards.

The FGT ball valve is able to withstand aggressive acids and alkalis. The thick-walled PFA lining prevents any weakening due to diffusion of chemicals.

Absolutely tight and highly resistant to corrosion, the ball valve is irreplaceable in critical processes. At the same time, the EN ISO 5211 interface facilitates the cost-efficient integration of automation elements.

The precise production and modular expansion options make it the leading choice even in the most technologically demanding processes.

Choosing the right flanged ball valve is crucial for the efficient and safe operation of industrial systems. The FGT ball valve from GEFA offers an ideally matched solution combining durability, functionality and flexibility. This state-of-the-art product raises every system to a new level of performance and safety.

Ready to optimize your processes? Contact us today to find out more about how the FGT ball valve can revolutionize your applications.

Further product information can be found here:

Flanged ball valve FGT

Our DOMINO knife gate valves types AT100, AT150 and AT200 are now available with ATEX certification for Zone 0 and 20. This certification ensures that our gate valves can also be used reliably and safely in potentially explosive atmospheres.

DOMINO knife gate valves are ideally equipped for applications in the following areas:

• Zone 0: In areas in which an explosive atmosphere in the form of a mixture of air and hazardous substances in the form of gas, vapor or mist is present continuously, for long periods or frequently.
• Zone 20: In areas in which an explosive atmosphere in the form of a cloud of combustible dust in air is present continuously, for long periods or frequently.

Knife gate valve AT100

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Knife gate valve AT150

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Knife gate valve AT200

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ATEX certifications are crucial for safety in potentially explosive atmospheres. Knife gate valves used in such environments must meet strict safety requirements to minimize the risk of explosions. ATEX-certified knife gate valves such as our DOMINO models AT100, AT150 and AT200 ensure that they operate reliably and safely even under extreme conditions. They offer protection against explosions in atmospheres endangered by gas, vapor or dust and thus contribute significantly to the safety of plants and employees thanks to our certified quality.

In addition to the models mentioned above, we have the following variants with special certifications and certificates:

• Knife gate valve AT200F: This knife gate valve has a type examination certificate for zone 20 and is also pressure shock-resistant and flameproof up to 10 bar, making it particularly robust and reliable.
• Knife gate valve AT500F / AT510F: These models are also equipped with a type examination certificate for Zone 20 and offer maximum safety and reliability in potentially explosive atmospheres.

Both series (AT200F and AT500F/AT510F) have been certified for explosion pressure resistance up to 18 bar (DN200 - DN600) and 10 bar (DN700 - DN800) in accordance with DIN EN 14460.

Knife gate valve AT200F

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Knife gate valve AT500F / AT510F

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