Critical functions of valves in reservoirs

In large reservoirs, butterfly valves perform functions that are vital to public safety and to making the most of the water resource. This equipment is responsible for precisely regulating the water sent to the distribution channels, controlling the bottom outlets and managing the discharge systems needed to release volume in a controlled way in the event of floods or emergencies. They also act as safety isolation elements, making it possible to section off stretches of pipe to carry out maintenance work on the dam without interrupting the general supply.

Double eccentric technology

Our range of double flanged double eccentric butterfly valves meets these severe demands with full guarantees. Its double eccentric design offsets the axis of rotation with respect to the seat, which drastically reduces friction during opening and closing. This translates into minimum component wear, a stable operating torque over the years and a bidirectional tight shut-off that prevents any leakage under massive water columns.

Maximum safety automation with Bernard actuators

Automating these units is just as critical, since the safety of a reservoir depends on a fast, reliable response. That is why all the equipment has been fitted with Bernard Controls electric actuators. These industrial actuators bring millimetric precision to flow regulation and integrate perfectly with the dam’s centralised control system. The combination of the smooth rotation of our valves with the motor’s controlled torque ensures safe operations, protecting the pipework against water hammer. With this supply, we at COMEVAL reaffirm our commitment to bespoke engineering for safe water management.

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This project called for a highly engineered technological solution to transport highly concentrated phosphoric acid slurries. This critical fluid combines, in extreme form, two of the greatest threats to the service life of any installation: aggressive chemical corrosion and severe mechanical abrasion caused by the high concentration of suspended solids.

Straight-through diaphragm valves 

For this project, straight-through diaphragm valves are the ideal choice. Unlike weir type models, the unobstructed flow design of the straight-through series offers a fully concentric channel.

This optimised geometry brings decisive operational advantages for the fertiliser plant:

• Minimum pressure drop: the slurry moves smoothly with no internal restrictions.
• Zero blockages and sediment: its design with no internal cavities prevents phosphoric acid from building up and solidifying in the bottom of the body.
• Self-cleaning effect: when fully open, the continuous passage of the fluid itself carries the particles away, drastically reducing unplanned maintenance shutdowns.

High resistance linings and elastomers

At the heart of this project’s success lies the careful selection of materials. To withstand the simultaneous attack of abrasion and corrosion, the body of the DN150 valves has a specific, highly resistant internal lining.

This technical lining acts as an impenetrable barrier for the metal structure of the valve. Combined with the brand’s advanced elastomer diaphragms, the assembly guarantees complete tight isolation and prevents any leakage to the outside. It also allows perfect bidirectional flow shut-off and makes on-site maintenance easier without having to remove the valve from the pipeline.

Bespoke solutions for the chemical industry

With this project, Comeval Valve Systems reaffirms the reliability of its DIAVAL® brand in critical industrial environments with demanding chemical and mining requirements. Our ability to design bespoke solutions according to the specific variables of each process is the differentiating value that guarantees maximum safety, durability and profitability at our customers’ plants.

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DIAVAL® Weir Type Valves (W Series)

• • Tight shut-off with less effort: the central weir reduces the travel of the diaphragm, ensuring an immediate tight seal without straining the mechanism.
  • Flow regulation capability: its design allows the handwheel to be set at intermediate positions for precise flow control.
  • Safety with aggressive chemicals.
  • Prevents cross contamination.
  • In-line maintenance capability: thanks to its bolted bonnet, the diaphragm can be replaced without removing the valve from the pipe, minimising downtime.

DIAVAL® Straight-Through Valves (ST Series)

• • Zero obstructions: when fully open, the body behaves like a continuous straight pipe, avoiding pressure drops or the risk of blockages with viscous fluids.
  • Less abrasion wear: solids, sand and sludge flow straight through without hitting internal bends directly, extending the service life of the equipment.
  • Direct mechanical cleaning: its completely straight geometry makes it easy to introduce internal cleaning systems.
  • Perfect bidirectional flow: it guarantees optimum isolation performance regardless of the direction in which the fluid flows.

Optimise your plant with COMEVAL®

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Special summer hours

• Monday to Friday: 08:00 to 14:30.

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Technical capabilities

• Machining and automation: precise integration of valve-actuator assemblies.
• Original spare parts: exclusive use of official brand spares.
• Guaranteed calibration: equipment periodically verified in external laboratories.
• Functional testing: rigorous pressure tests to ensure optimum performance.

Diagnosis and performance guarantee

• Free diagnosis and proposed solution: we assess the real condition of the equipment and issue a free technical report. We always give priority to extending the asset’s service life and to safe use of the product.
• Effectiveness commitment: if after our intervention the equipment does not recover its original functionality, we do not invoice for the service.

Sustainability and efficiency 

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Strength and structural optimisation

Instead of a conventional homogeneous design, these valves combine two strategic materials to respond efficiently to the most demanding working conditions:

Stainless steel body: located in the area through which the fluid passes, to offer complete chemical resistance to aggressive media, avoiding corrosion and guaranteeing a long service life.

Carbon steel bonnet: provides the mechanical robustness needed to withstand pressure peaks (PN40) and structural stresses, optimising the economic viability of the assembly without compromising safety

Anti-tamper safety cap: protection against interference

Beyond the strength of its materials, the key feature of this valve is the inclusion of an anti-tamper safety cap. In complex industrial environments, preventing unauthorised interference is a critical priority for continuity of service.

This cap acts as physical shielding over the valve handwheel. It makes it absolutely impossible for the position of the line to be altered accidentally or at random. In this way, flow control remains strictly within the established safety protocols.

Reliability and performance with ARI-Armaturen

This solution meets the high standards of the ARI FABA® Plus series. It incorporates a double-walled metal bellows to prevent leaks and needs no subsequent maintenance. This important project demonstrates Comeval’s ability to act as a trusted supplier on critical projects, providing physical safety and innovation in materials.

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Under this edition’s central theme, “Circularity is a must”, the fair showed that the water and waste treatment sector has been a fundamental driver of the global economy. For Comeval, taking part was an outstanding opportunity to reaffirm our leadership in engineered fluid control solutions, sharing a stand with ARI-Armaturen.

The value of technical advice: Luca Garofalo’s expertise

One of the pillars of our presence this year was specialist advice. Our Water Business Developer, Luca Garofalo, led the technical consultancy sessions on the stand, looking at our customers’ projects and operational challenges at first hand. The excellent reception of these personalised sessions confirms that, in an increasingly technological environment, technical reliability and expert knowledge remain the assets most valued by operators and engineering firms in the water sector.

Key takeaways from IFAT 2026: efficiency and resilience

During the week we saw how digitalisation and energy efficiency have stopped being trends and become operational standards. At Comeval, our product lines for water applications – including solutions offering maximum reliability and operational efficiency – are aligned with the need to build infrastructure that is more resilient to climate change and resource scarcity.

We would like to thank all the customers and new contacts who visited us on the stand. Your concerns and projects are the driving force that pushes us to keep innovating in the manufacture of valves that guarantee water sustainability.

Couldn’t visit us in Munich? Do get in touch with our technical department or request a consultation with our team of experts to discover how our new products can optimise your installations

See you at the next edition in 2028!

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In a setting shaped by the need for more efficient infrastructure, Comeval works to respond to today’s water challenges. Our proposition combines precision engineering with solutions that guarantee extreme reliability and operational efficiency in every project.

Efficiency and sustainability in water infrastructure

Our presence at IFAT focuses on three pillars that are fundamental to the water industry:

• Operational efficiency: valves designed to optimise water transport and treatment, reducing energy costs.
• Maximum reliability: robust equipment prepared for the most demanding applications and critical environments.
• A commitment to sustainability: technology aligned with preserving water resources and reducing environmental impact

Personalised technical advice with Luca Garofalo

We understand that every installation has unique challenges. That is why Luca Garofalo, our water sector expert, will be in Munich to offer direct technical consultancy. We recommend booking your appointment in advance. That way we can analyse your projects and specific needs in detail and without any waiting during the days of the fair.

Visit us at IFAT Munich: location and tickets

We look forward to sharing our latest innovations and projects with you:

• Location: Hall C2 | Stand 205 (stand shared with ARI-Armaturen).
• Dates: 4 to 7 May 2026 in Munich.

Don’t have your pass yet? Don’t miss the sector’s benchmark event! You can get your ticket directly from the official IFAT portal

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Technical documentation always available thanks to the QR code

Every valve we manufacture at Comeval carries an individual QR code that links directly to complete, detailed technical information for that valve. This system ensures that the information is always up to date, available and accessible from any device, removing the dependence on printed documents or scattered files.

By scanning the QR code, the user can access:

• A detailed data sheet, with all the specifications for the model.
• Drawings and technical diagrams, essential for engineering and design.
• Installation and maintenance manuals, which ensure correct assembly and safe operation.
• General certificates, such as WRAS, ACS and other relevant approvals.
• Material certificates and specific tests for the valve received, guaranteeing full traceability from manufacture to delivery.

This immediate access means that any professional has the information they need at the exact moment they need it.

A system that brings efficiency, safety and transparency

QR traceability, now fully built into our valves, offers key benefits:

• Time savings: it cuts down searching and avoids errors caused by out-of-date documentation.
• Full transparency: every valve has its own verifiable technical history.
• Better maintenance: it makes product identification and spare parts management easier.
• Sustainability: it reduces paper use and duplicated documents.
• Greater operational safety: critical information is always available, even in the field.

An ongoing commitment to quality and digitalisation

At Comeval Valve Systems we continue to reinforce our commitment to innovation and excellence. Digital traceability by QR code, present in our valves, is a tool that improves processes, makes communication between teams easier and guarantees more efficient, safer technical management.

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At this edition, Comeval will share its space with ARI-Armaturen, presenting advanced solutions designed to improve the efficiency, reliability and sustainability of installations. Our Water Business Developer, Luca Garofalo, will be on hand to give visitors personalised advice, present our new products and explore new opportunities to work together.

Plan your visit to our stand with the official IFAT 2026 app

To make sure you get the most out of your visit, we recommend downloading the official IFAT app. With it you can explore the floor plan and the location of our stand, and follow the whole event programme.

The app lets you build your own personalised schedule and save Comeval as an exhibitor of interest. It also offers the IFAT Munich Solution Tours, guided routes through selected innovations, providing extra context and the chance to explore solutions in depth with expert guidance. This tool will help you focus on the most relevant solutions and make the best use of your time at the fair.

Come and see our solutions in Hall C2, Booth 205

We invite you to visit us at our stand, Hall C2 – Booth 205, where you can discover our latest developments and projects at first hand. We will be delighted to share knowledge, answer your questions and show how our solutions are transforming the water sector.

To make the most of your visit, we recommend booking your meeting with us in advance. That way we can devote the time needed to show you our solutions, answer your questions and look at how Comeval can help you improve the efficiency and sustainability of your operations.

We look forward to seeing you!

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