We are pleased to introduce the AJ Series Triple Eccentric Butterfly Valve, a metal seated valve granting excellent performance and engineered for severe service conditions where safety, reliability, and zero leakage are essential.

Designed with an advanced triple eccentric (triple offset) metal-to-metal sealing concept, the AJ Series delivers "zero leakage" tight shut-off while eliminating friction between seat and seal ring during operation. This results in minimal wear, low operating torque, and extended service life, even under extreme pressure and temperature.



Key features and benefits

• Zero leakage performance in accordance with ISO 5208 Rate A and API 598
• Metal-to-metal, torque-seated design for high pressure and high temperature service
• Friction-free operation, reducing wear and maintenance requirements
• Fire-safe and low-emission design, suitable for safety-critical installations
• Wide size range and material selection, adaptable to demanding process conditions
• Primary and Cryogenic versions available, including extended bonnet design for low-temperature applications
• Operated by gearboxes, hydraulic, pneumatic, and electric actuators for easy automation

Designed for critical applications

The AJ Series is ideally suited for industries where performance and reliability cannot be compromised, including:

•  Oil & Gas (midstream, and downstream)
•  Energy and Power Generation
•  Chemical and Petrochemical Processing
•  Desalination and Water Treatment
•  District Heating and Cooling
•  Marine, Mining, Steel, and Heavy Industry

Its compact design, low operating torque, and robust construction make it an excellent alternative to gate, globe, and ball valves, offering a lower total cost of ownership without compromising performance.

For applications challenged by high temperatures and pressures, the AJ Series Triple Eccentric Butterfly Valve delivers dependable performance.

Get in touch to explore how the AJ Series can support your next project.

We are pleased to share our latest AVK Group Sustainability Report, highlighting our ongoing commitment to sustainability and responsible governance.

The report showcases how we continue to embed environmental, social, and governance (ESG) principles into our business strategy, reflecting the high ethical standards required by our global presence and guiding everything we do.

We are proud to share that in 2024/25, 52% of our total electricity consumption came from renewable sources – a strong result made possible through dedicated investments and the collective efforts of our companies across the AVK Group.

The report features selected case stories from across the AVK Group, along with our key sustainability results from the past year and our ambitions and targets for the years ahead.

Read about our efforts in the AVK Sustainability Report 2024/25.

The Management Board of INTERAPP POLSKA Spółka z ograniczoną odpowiedzialnością with its registered office in Poznań (the Acquiring Company), in connection with the intended merger with AVK ARMADAN Spółka z ograniczoną odpowiedzialnością with its registered office in Pniewy (the Acquired Company), pursuant to Article 500 § 2 (1) of the Commercial Companies Code, hereby makes public the Merger Plan of November 26, 2025.

Plan

Our offices will be closed from 24 December 2025 to 6 January 2026.

As the year comes to an end, we would like to express our heartfelt thanks for your trust, loyalty, and great cooperation.

We wish you and your family a joyful and peaceful Christmas season and a healthy, happy, and successful New Year.

Buone Feste – Merry Christmas Season!

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