We are happy to announce an important milestone in the journey of InterApp Group: we are becoming AVK Industrial Sales.

The AVK Group is a globally respected, privately owned industrial group, comprising over 100 companies and renowned for its expertise in developing and producing high-quality valves, hydrants, and accessories for water applications and various industries.

Under the umbrella of AVK Industrial, we bring together the specialized strengths of well-established industrial brands, including:

• Indoil, offering high-performance ball valves,
• InterApp, with the PTFE-lined and elastomer-lined butterfly valves,
• Orbinox, a leader in knife gate valves,
• TecArtec, spezialised in high-performance desuperheaters,
• WouterWitzel, known for vulcanized, rubber-lined butterfly valves.

Some of the InterApp sales organizations - alrady renowned for offering one of the most extensive product portfolios in the industrial sector and backed by deep application expertise - will though gradually evolve into AVK Industrial sales organizations. This transformation reflects our commitment to strengthening partnerships, enhancing service, and supporting our customers with an even broader range of solutions.

What this means for our customers

The transition has already begun, with our organizations in Poland and Italy leading the way as they start operating under the AVK Industrial name by mid of this year.

In the German-speaking markets, we are working closely to unify our efforts and establish a strong DACH organization, which, like the North American organization, continues to operate under the InterApp brand. The existing sales structure of the other industrial brands in the DACH-region and North America remains unchanged.

Throughout this process, we are committed to keeping you informed every step of the way.

Looking Ahead

This transformation is an opportunity to provide full-scale valve solutions for a huge variety of demanding processes and industrial applications, offering unparalleled expertise, quality, and service to our valued customers and partners. As this represents primarily a name change for you, we will built on our strong relationship and trust that this will not mean any disruption for you.

For more information or questions about this transition, please don’t hesitate to contact your local representative.

We appreciate your continued trust and partnership as we embark on this exciting new chapter as AVK Industrial Sales.

Kind regards

Guido Baldini
Group Director - AVK Industrial Sales

We are happy to introduce a new InterApp Academy training video—a video tutorial on how to change a butterfly valve function from normally closed to normally open. This step-by-step guide is designed to help you master this adjustment process with ease and precision.

In this video, you will discover:

• How to handle pneumatic double-acting actuators and adjust air supply connections.
• Techniques for modifying single-acting actuators and manual adjustment of the valve disc.
• When to consider factory pre-settings for counterclockwise operating directions.

With clear instructions, the video equips you with the know-how to perform on-site adjustments confidently and safely.

Happy watching.

Video - How to change a butterfly valve function

We’re excited to announce a new instructional video from InterApp Academy! This step-by-step guide shows you how to change the optical position indicator and install open-mounted proximity switches with ease.

Key highlights of the tutorial:

• Optical position indicator adjustment: Learn how to modify the optical position indicator based on your specific valve type for correctly.
• Installing proximity switches: Discover how simple it is to install open-mounted proximity switches yourself, using two different position indicator cam options.

Happy learning!

Video - How to change the optical position indicator and install proximity switches

The oil and gas sector plays a crucial role in the extraction of raw hydrocarbons, their refinement, and the production of key end products such as fuels and petrochemicals, which are vital for a wide range of applications.

This complex industry spans upstream, midstream, and downstream processes, each presenting its own unique challenges and sub-processes. Depending on the process and media, our PTFE-lined butterfly valve Bianca, elastomer-lined butterfly valves Desponia and Desponia plus, or double-eccentric butterfly valve Elara are utilised.

The range is further enhanced by products from our sister company Indoil, offering globe, gate, check, and ball valves.

Learn more about our valves for various processes and media.

Application brochure Oil & Gas

High temperatures place considerable demands on the physical and chemical stability of materials.

In many industries, butterfly valves are used in high-temperature environments. A thorough understanding of material selection and application is required to ensure a long service life and high effectiveness of butterfly valves.

InterApp offers a wide range of disc, coating, and liner materials specifically tailored for various high-temperature applications. The range includes elastomer liners for the Desponia^® and Desponia^® plus series, as well as Ultraflon^® and PTFE liners for the Bianca series. In combination with metal discs or discs with PFA overmolding for the Bianca range, and with PEKK or Halar^® coatings for the Desponia^® range, configurations are created that offer excellent temperature resistance.

Our valves are ideal for demanding high-temperature processes and ensure reliable performance in industries such as pulp and paper, sugar, food and beverage, and chemical processing, to name a few.

Discover our high-temperature solutions in our brochure or contact us. We will be happy to help you make the right choice.

We are pleased to announce that CAD and BIM-compatible 3D models of Desponia and Desponia Plus are now available on the CADENAS platform.

CADENAS offers an extensive range of CAD catalogues in over 156 formats, providing a valuable resource for architects, engineers, and designers to create digital plant twins.

The following InterApp products are now completely integrated:
- PTFE-lined butterfly valves Bianca
- Elastomer-lined butterfly valve Desponia
- Elastomer-lined butterfly valve Desponia plus
- Pneumatic actuator IA motion
- Gearbox GB
- Plastic limit switch box

Take advantage of this excellent resource to configure your InterApp butterfly valves, generate data sheets, and create drawings in your preferred formats.

https://interapp.partcommunity.com/

The power generation industry is pivotal in providing electricity to homes, industries, and critical infrastructure, thereby fuelling economic activity.

Environmental considerations are gaining prominence, and the industry significantly contributes to sustainability and climate change discussions. From biomass and solar to wind and hydropower, the sector leads the transition towards a sustainable energy future.

InterApp has been dedicated to delivering high-quality valve solutions for power plant construction for over 50 years. Our products serve a diverse range of facilities, including coal, biomass, and solar power plants, offering customised solutions that meet their specific requirements.

In coal-fired power plants, our valves enhance systems such as water cooling, desulphurisation (FGD), and NOx reduction. Desponia® and Bianca butterfly valves are constructed from durable materials like cast steel bodies and super-duplex discs.

For biomass plants, our butterfly valves feature specially engineered NBR liners, are certified to EN161 standards, and are suitable for potentially explosive environments.

Learn more about our solutions. 
Application brochure - Power Generation

InterApp butterfly valves play a crucial role in the production of essential ingredients for fertilisers such as urea, monoammonium phosphate (MAP), diammonium phosphate (DAP), potassium chloride, and ammonia.

Fertilisers are crucial in supplying vital nutrients like nitrogen, phosphorus, and potassium to plants, thereby boosting their growth and productivity. They are available in a variety of forms, including organic, synthetic, and specialty fertilisers. Their production process - whether for liquid or dry fertiliser - requires durability and reliability.

Our valves are specifically designed to withstand the high pressures and temperatures encountered in fertiliser production. They also offer superior resistance to corrosion and abrasion, making them an ideal choice for the harsh conditions of fertiliser manufacturing.

Learn more about our valve solutions for your fertiliser production processes in our brochure.

The steel industry ranks among the world's largest industrial sectors.

Steel, renowned for its versatility, finds application across numerous industry sectors, including construction, automotive manufacturing, infrastructure development, mechanical engineering, and various other industrial applications.

Our Bianca, Desponia, Desponia plus, and Saturnia butterfly valves excel in terms of variety and reliability and find application in a diverse array of production processes:

- Ironmaking
- Steelmaking
- Primary forming
- Secondary forming
- Pickling
- Coating
- Acid generation
- Water treatment plant
- Gas cleaning system



Discover the suitable butterfly valve for your specific process and medium within our application brochure.

New How-To-Video

In our comprehensive video tutorial, you'll discover how to effectively repair large butterfly valves, taking you through each crucial step in the disassembly and reassembly process, providing you with valuable tips along the way.

Through responsible maintenance and waste reduction, we can collectively make a meaningful contribution to a more sustainable future.

To the video "How to repair large butterfly valves"

Uncompromising quality

The pharmaceutical industry plays a pivotal role in advancing new medicines and contributes significantly to disease prevention and long-term health solutions. Pharmaceutical products are offered in various forms, encompassing solid and liquid oral dosage forms, injectables, topical preparations, inhalants, and more.




The manufacturing of these products demands valves that meet the highest purity standards and exhibit exceptional temperature resistance, all while complying with stringent legal regulations.

InterApp butterfly valves not only fulfill these requirements but are also successfully employed in diverse production processes.

• Batch processing
• Sterilisation processes
• Fermentation
• Filtration
• Washing and dying
• Heat exchanging
• Reacting
• Solvent recovery
• Cleaning-in-place
• Sterilisation-in-place
• Material transfer
• Waste management

Discover the suitable butterfly valve for your specific process and medium within our application brochure.

We are delighted to announce a partnership with CADENAS, providing users with access to CAD and BIM-compatible 3D models of their Bianca butterfly valves.

Building Information Modelling (BIM) catalogues, containing detailed 3D models and building component data, are gaining significance in construction projects due to their precision and efficiency. CADENAS offers an extensive array of CAD catalogues in more than 156 formats, serving as a valuable resource for architects, engineers, and designers.



As of now, our Bianca butterfly valves are seamlessly integrated into the CADENAS Platform. This integration allows users to configure our valves, generate data sheets, and create drawings in their preferred formats.

By making Bianca butterfly valves available in the CADENAS CAD catalogue, InterApp takes a crucial stride towards digitalisation, equipping engineers and contractors with essential data for crafting digital plant twins. The platform is accessible to the public, establishing it as a valuable resource for industry professionals.

Link to Bianca CAD Models

Our new double eccentric butterfly valve Elara, available in sizes ranging from DN 50 to DN 600, has been designed specifically to meet the demands of heavy-duty industrial applications. It confidently performs in extreme temperature ranges, withstanding temperatures from -50°C to +400°C, and effortlessly handling pressures of up to 50 bar.

This robust butterfly valve offers a choice of body materials, including carbon steel and stainless steel, along with a stainless steel disc and three easily interchangeable seat options (MPTFE, metal, and fire safe).



The versatility of this valve extends across a wide range of industries, including water treatment, power generation, chemical processes, life sciences, the pulp and paper industry, sugar industry, oil and gas, marine, district cooling and heating, and air separation.

Notable features include:
- Easily interchangeable seat options that provide customisation to meet specific requirements, even on-site.
- A low fugitive emission gland packing system that ensures environmental compatibility.
- Fire Safe execution in compliance with ISO 10497 and API 607, supported by various certifications.

Our Elara butterfly valve is synonymous with quality and reliability for the most demanding industrial applications. To delve deeper into its technical features, please refer to our comprehensive data sheet.

MORE

We look forward to hearing from you and providing assistance with your projects.

We are delighted to announce the expansion of the InterApp family, and it is with great pride that we officially welcome InterApp North America and InterApp AVK Korea, commencing from October 1, 2023.

With an experienced team around Michelle Sinclair in the USA and the track-record of Yongjin Kim in South Korea, we move closer to our valued customers in these regions, enhancing our ability to serve and support them effectively.




InterApp North America, Inc.
440 Cobia Dr. Ste 1204
Katy, Texas 77494
United States
T: +1 713 860 5125
michellle.sinclair@interapp.net

InterApp AVK Korea Co. Ltd.
Suite 2056, B-dong
Geumgang IX
Tower, Dongtan
Cheomdansaneop 1-ro
Hwaseong-si, Gyeonggi-do
Korea. postal code:18469
T: +82 31 723 0312
yongjin.kim@interapp.net

High abrasion and corrosion-resistant valves for a long service life with minimal maintenance.

From feed preparation and pulping to bleaching, stock preparation, papermaking, finishing, converting, and HVAC, InterApp butterfly valves cover various process stages of paper manufacturing.

To handle corrosive media, our PTFE-lined Bianca butterfly valve with PFA overmoulded disc is suited. It is ideal for feed preparation from recycled chemicals, chemical and semi-chemical pulping as well as bleaching processes.
For abrasive media in various paper manufacturing processes, our Desponia butterfly valve with stainless steel disc is the ideal solution.
Knife gate valves, stainless steel ball valves, check valves, actuators, and accessories complete the package.



Discover our product range for the Pulp & Paper industry or contact us.

Guarantee efficient production processes

Sugar production is a crucial industry worldwide. It involves a combination of agricultural practices, extraction processes, refining techniques, and quality control measures to ensure a consistent supply of sugar to consumers.

InterApp butterfly valves meet the requirements of different process stages, ranging from preparation to extraction, clarification, evaporation, crystallisation, drying, refining and packaging. They stand for durable and efficient operation.



The InterApp product range for sugar industry covers:

• Centric butterfly valve Desponia®
• Double eccentric butterfly valve Elara
• Knife gate valves
• Ball valves
• Check valves
• Actuators
• Accessories

Discover our product solutions for sugar production or contact us.

Body coatings are important for butterfly valves because they contribute to the durability and performance of the valve. They serve several purposes:

- Protection against corrosion
- Improve wear resistance
- Weather resistance
- Aesthetics

For InterApp butterfly valves Bianca, Desponia and Desponia plus, an epoxy or epoxy/polyurethane coating with a thickness of 80 to 330 mm is mainly used. Depending on the coating material and thickness, different corrosion classes such as C2, C4, C5I and C5M can be achieved. Butterfly valves with a body coating of epoxy/polyurethane and a coating thickness of 330 mm, for example, are suitable for industrial areas with high humidity and aggressive atmospheres and can achieve a service life of over 15 years.



To ensure the highest quality standards, we at InterApp subject our coatings to thorough quality control. This includes adhesion and peel tests to ensure that the coatings are applied under optimal conditions.

Learn more about the different enclosure coatings and their suitability.

Maximum safety and trouble-free operation

Biogas is derived from organic materials including agricultural waste, liquid manure, municipal waste, plant material, green waste, and food waste. It serves as a progressive and sustainable energy source, playing a significant role in the transition to renewable energy.

InterApp butterfly valves are specially designed for the requirements of biogas plants and are used in production processes, such as substrate feeding and pre-treatment, fermentation, digestate treatment and biogas utilisation.



The versatile Desponia offers different, extremely corrosion-resistant liner materials based on NBR or FPM for different H₂S contents.
Desponia® and Desponia® plus, from DN 50 to DN 250 and an operating pressure of up to 5 bar, have fulfilled the strict requirements of EN 161 and received DVGW approval according to EN 161 Class A, valve group 2, safety class B. In addition, they meet one of the most important standards for fugitive emissions, ISO 15848-1 (former TA-Luft/VDI 2440), and can be supplied in ATEX design.

Discover our product solutions for biogas applications or contact us.

Flyer Biogas
Flyer Liner Desponia

Safe and highly reliable valve solutions

In the food and beverage industry, there are various production processes that can vary depending on the type of product being manufactured. The processes range from raw material preparation to mixing and processing, fermentation, preservation, filling, packaging and quality control.

InterApp butterfly valves meet the specifications for smooth, hygienic and reliable production processes and offer:

- Hygienic design
- Easy cleaning and maintenance
- Various materials with food approval
- EPDM and NBR liners in white and blue
- Reliability and durability



Discover the possibilities of Desponia, Desponia plus and Bianca for your process-specific applications in the food and beverage industry and contact us.

Reliable control for harsh conditions

We are pleased to announce the addition of FESTO's SRBC aluminium limit switch box to our range. The SRBC limit switch box is designed to provide electrical feedback and control of the position of valves. It is reliable even in the harshest industrial environments and ensures precise position control and reliable operation.

Key Features of the SRBC Limit Switch Box:

• Tool-free adjustment of trip cams
• Sturdy, corrosion-resistant design for harsh conditions
• Clear 3D position indicator for quick detection of valve position
• Mechanical, inductive, or magnetic switch variants for various applications
• Intrinsically safe options for potentially explosive areas
• Two cable inputs for shared power supply with solenoid valve

Together with our partner FESTO, we strive to deliver valve solutions that optimise processes, increase productivity and ensure operational efficiency.

Learn more about the SRBC limit switch box.

Faced with a global shortage of chips, GlobalFoundries increased its production capacity in Singapore by building a new manufacturing plant. InterApp product solutions were used for ultra pure water, waste water and cooling water.

Ultrapure water (UPW) in particular is critical in the semiconductor industry. This high-purity water is produced as close as possible to pure H2O and is used to clean the surfaces of semiconductors. To ensure that even the smallest foreign particles do not enter the process and that absolutely flawless products can be manufactured, the use of high-purity components is crucial.



The InterApp butterfly valve Bianca in high-purity design and Desponia® in grease-free design are manufactured under the strictest purity conditions. They are characterised by their quality and high degree of purity and contribute to the fact that exceptional quality and safety standards could be achieved in the newly built production facility.

Read more in the GlobalFoundries case study.

Safe operation thanks to the right material configuration

Corrosive media cause surface erosions and present significant challenges in terms of industrial equipment maintenance and safety and can cause significant costs.

To safely handle corrosive media, InterApp offers specific discs and liners with high-quality materials. Thanks to a wide range of combination options, our butterfly valves can be optimally composed to your requirements.

Our disc materials for corrosive media include PFA, Hastelloy, titanium, Ultralene Coating™, Stainless steel Halar® coated, Stainless steel, Stainless steel polished, Ductile iron Halar®, Rilsan® or Polyurethan coated.



Many different liner materials complete the range. Which corrosive media do you work with?

Find out about the different materials in our brochure and find the right butterfly valve for your medium.

Over the next two decades, a worldwide doubling of passenger numbers in air traffic and a continuous increase in freight traffic are predicted. In order to meet the challenges ahead, passengers and goods will have to be transported quickly and efficiently, while at the same time reducing emissions.

In Switzerland, the EuroTube Foundation is researching on Hyperloop-technology, a new vacuum transport technology that combines the speed of an aeroplane with the ecological footprint of a train. The hyperloop shall reach speeds of up to 1000 km/h, connect city centres directly and use 100% purely electric green energy.



As part of the project, our InterApp Bianca butterfly valves are installed in the vacuum system and currently tested for vacuum suitability. We will follow the development with excitement and are proud to be involved in this fascinating project.

Learn more about EuroTube and the project.

To be able to optimally serve projects with larger valve dimensions, we have commissioned an additional test bench for nominal sizes up to DN 2200.

In addition to its capacity for larger valves, the advantages of the test bench include the creation of a descriptive quality test report, several test options and the possibility of carrying out remote tests. Thanks to the integrated video camera equipment, the first factory acceptance test for a project in Abu Dhabi with DN 1600 valves and 16 bar operating pressure could already be successfully accepted from the distance.



The new test bench is an important milestone for our competence centre of desalination, which offers customers around the world a comprehensive service - from project support to plant-specific valve configurations.

The scarcity of water resources is an increasing problem for many regions.

Creating new water sources through desalination is therefore a natural and viable alternative. Currently, there are more than 17,000 desalination plants worldwide, producing more than 107 million m³ of freshwater every day, benefiting more than 300 million people.

InterApp butterfly valves are used in seawater desalination plants all over the world and are convincing in a wide range of processes. 

We are therefore pleased to announce the opening of our Desalination Competence Centre at InterApp Spain. Lead by Luis Monsalve, the centre will act as a global coordination hub for sales and production activities within the AVK Group and will assist our partners and customers worldwide in their projects.

We look forward to hearing from you.

Contact:
Luis Monsalve
Desalination Sales Manager
luis.monsalve@interapp.net

Learn more about our solutions for seawater desalination.

We are happy to announce that InterApp Spain is now certified according to ISO 14001:2015.

ISO 14001:2015 provides a foundation for eco-management, whose aim is to address environmental problems in a precautionary manner and to implement production-integrated solutions. These include, above all, closed-loop recycling, material substitution and process flow changes.



With this new ISO 14001:2015 certificate we emphasize our engagement to be an environmentally conscious company and commit ourselves to implement future-proof, environmentally compatible and cost-saving solutions for our operations.

The H₂S content in the biogas is decisive for the choice of liner material. The higher the H₂S content, the higher the sulphuric acid concentration.

Four corrosion-resistant liners for different H₂S contents are available for the Desponia^® butterfly valves:
- Nitrile N
- Nitrile NG
- Nitrile NH
- FPM VD



The high-quality elastomer compounds, together with the robust Desponia^® and Desponia^® plus, ensure trouble-free and safe plant operation.

Learn more about our liners for biogas applications.