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Triple offset design
Process valve with butt weld ends



Chemicals, Food & Beverage, Valves, Pipes & Fittings

It’s absolutely tight, durable and versatile – for isolation and control even in harsh industrial environments. Ari-Armaturen’s metallic sealing, triple offset Zetrix process valve is a premium product for the international market that outlasts and outperforms the competition. New: A version with butt weld ends is now also available from Ari as an alternative to the double flanged and fully lugged designs.

Zetrix unites all the benefits of a metallic sealing process valve with the advantages of a butterfly design. With its small footprint and reduced weight, this cutting-edge butterfly valve is very easy to handle. The triple offset principle guarantees a permanently tight seal conforming to leakage rate A as per DIN EN 12266-1, because the valve fits precisely and closes without friction. Available in cast or stainless steel, it can optionally be used as an isolation and control valve – yet another example of its great versatility.

Zetrix is suitable for liquids, gases and vapours in a wide range of applications, for example in oil and gas processing, refineries, petrochemicals, chemicals, solar thermal power stations, power plants, district heating, pulp and paper, steelworks, sugar processing and industrial and plant manufacturing in general.

The Zetrix design was developed and optimised using the very latest generation of tools, including the finite element method, contact angle calculations, flow simulations and characteristic measurements. Field tests (e.g. fire safe) and endurance trials were carried out at an accredited testing laboratory as well as in our own experimental lab. The new Zetrix process valve has been tested and approved as fire safe according to ISO 15848 / German clean air regulations (TA-Luft) and SIL.

The finite element method (FEM) is a numerical calculation technique that was used to simulate the stresses and their distribution occurring over the valve disc. The aim was to achieve the required strength at pressure load levels in combination with a slim and flow friendly shape.

The media flow through the piping system was additionally determined with the help of flow simulations which enabled the flow velocity, flow direction and pressure distribution to be visualised.
Due to the optimised disc geometry, turbulences have been minimised and pressure loss prevented. The result: uniform flow plus a high flow capacity.

The flow values in different valve positions were measured on a special test section in our in-house laboratory. The curves obtained in this way were used to fine-tune the control characteristic of the process valve.

The rotation of the lamellar sealing ring into the body seat was optimised by ensuring that all sealing geometry parameters are precisely coordinated. The ideal plug shape that is critical for frictionless opening and closing of the Zetrix valve was then computed.

Last but not least, the new valve was subjected to the acid test. In many applications there is an increased fire hazard. In the event of a fire, the valve must continue to meet internal and external leak-tightness requirements for a defined period of time if exposed to direct flame impingement. This ability was impressively demonstrated in a fire safe test according to ISO 10497 / API 607 6th Edition.

Key features at a glance
The metallic sealing Zetrix has a triple offset design; in addition to a “smart”, self-aligning sealing ring, it also provides isolating and control functions. It is tight closing according to DIN EN 12266 (leakage rate A), has a stellited seat, hardened shaft bearings and a blow-out proof stem as standard and can be used as a pipe-end valve on both sides. The valve can be insulated in line with industrial standards and has ISO 15848 / TA-Luft, ISO 10497 / API 607 6th Edition fire safe and SIL approvals.

The Zetrix design complies with DIN, ANSI and API specifications, and the valve can be made from either cast carbon steel (1.0619 +N; SA216WCB) or stainless steel (1.4408; SA351CF8M). Its face-to-face length corresponds to DIN EN 558-1 Series 13 (double flanged), Series 16 (fully lugged) or Series 14 (new version with butt weld ends). The valve is rated for operation at temperatures from -29°C to +427°C.

Zetrix process valves are available in several different nominal diameters from DN 80 to DN 1200, for nominal pressures from PN 10 to PN 40 and conforming to Class 150 or Class 300, depending on the type of connection. Apart from the double flanged design, the valves can also be ordered as a fully lugged version or – in future – with butt weld ends. Zetrix valves are used with a manual gearbox or with a pneumatic, electric or hydraulic actuator. The manufacturer emphasises that other configurations, e.g. customer-specified connection types, nominal diameters, pressure classes, face-to-face lengths, materials and temperature ranges can also be implemented on request.

The above-mentioned product series is further enhanced with an array of useful options: a flushing port for the shaft bearings and a buffer port for protecting the stuffing box, a flushing port for the bottom flange, a welded bottom flange, a double packing with a drainage line (e.g. for thermal oil services), a test port, a “clean air” bushing according to TA-Luft, a solid sealing ring for special applications, a heating jacket for high viscosity fluids and blow-out protection to API 609.

Zetrix is typically used in the oil and gas industry, chemicals and petrochemicals, district heating, energy and power plants, iron and steel, food and beverages, sugar making, shipbuilding, the gas sector and pulp and paper.


A ground-breaking approach to keep plastics circular



Fully in line with its award-winning No Waste vision, Coveris is now introducing a new business segment named ‘ReCover’, bundling all efforts in waste sourcing, processing, and recycling to close the loop for circular plastic recycling. ReCover will act as a separate company supplying Coveris sites on an arm’s length basis but also supplying third party customers that are interested in recyclates on a quality level that are not available in the market today.

As part of its sustainability strategy, Coveris has already announced the ambition of reducing waste in all its forms. Expanding its recycling capacity and capabilities is just the next logical step for avoiding pollution and supporting customers in their sustainability efforts.

“With ReCover, we have launched a game-changing process – unique within the entire industry. With several high-impact projects in the pipeline, we are aiming at establishing a stand-alone Business Unit in the next couple of years, entirely dedicated to circular economy and closing the loop. ReCover is a platform for all mechanical recycling activities but also leads our developments to achieve food contact compliant materials.” comments Jakob A. Mosser, CEO Coveris.

To further strengthen and expand its recycling capabilities Coveris has recently acquired the site and assets from Capital Valley Plastics Blaenavon in Wales, UK. CVP is a well-established PE recycler, processing post-consumer and post-industrial waste via in-house mechanical recycling extruded mostly into building films. The Blaenavon site is equipped with the latest state-of-the-art mechanical recycling technology, with an annual capacity of 20 000 tons.

“The newly acquired Blaenavon site and assets will serve as an important recycling hub for Coveris’ Films and Flexibles operations, closing the loop for customers and for our own film production across the network. This new recycling acquisition marks a perfect start for our new company ReCover and our quest to continuously enhance our recycling offers to our customers, truly closing the loop and bringing us closer to our vision of No Waste.”, closes Mosser.

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Energy management system for green hydrogen



ABB introduces its energy management system ABB Ability OPTIMAX to the green hydrogen market, to help reduce costs of production by enabling real-time visibility of energy consumption across operations.

Green hydrogen made via electrolysis – a process of using electricity from renewable sources to split water into hydrogen and oxygen – is widely considered an important energy vector for achieving a low carbon future. It does, however, pose significant challenges in the way of high production costs and energy intensive processes.

According to the Green Hydrogen Catapult, a global initiative made up of leading energy companies, to scale up production capacity to the 50 times needed, the cost to produce green hydrogen needs to drop by 50 percent to less than $2/kg by 2026.

ABB’s OPTIMAX supports this by serving every aspect of a hydrogen plant lifecycle, from simulation at design and engineering phases to real-time visualization and monitoring when in operation. The software measures bi-directional power flows and carbon dioxide emissions providing contextual data which operators can use to determine optimal energy consumption levels required to support plant processes and minimize waste.

The transparency offered by the solution can also be applied to increase the efficiency and safety of each electrolyzer module being operated within the plant, regulating each module’s speed, and ensuring it is only used as and when required.

“Scaling up green hydrogen production requires significant capital investment as well as high operating costs,” said Sleman Saliba, Global Product Manager Energy Management for ABB Process Automation. “Nearly 70 percent of the total operating costs to run a hydrogen plant comes from the electricity needed to split the water molecule in the electrolysis process. With OPTIMAX, for between 1-3 percent technology investment, operators can run their industrial processes in the most energy efficient way and gain up to 20 percent reduction in electricity-based costs.”

Incorporating intra-day planning, operators can also utilize OPTIMAX to plan ahead to trade competitively with the grid, developing a circular energy system that is based on forecasts of renewable energy availability against demand, also considering market electricity prices.​

The solution can also be used to optimize green hydrogen integration with existing hydrogen networks and any future infrastructure that may developed.

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Innovation Hub for Co-Creation of end-to-end



As part of continuous investment, GCR Group has announced the recent opening of a dedicated R&D center in La Bisbal del Penedés, Tarragona, Spain. This ‘Innovation Hub’ is intended to build on 20 years of experience in materials technology and develop short-term and long-term polymer-based solutions that minimise environmental impact. The overall company investment is expected to reach Euros 100 million by 2025. Combined with the new state-of-the-art 200,000 tonnes recycling plant opening in 2023, these investments reflect a long-term vision created when the company was founded in 2001; ’Innovating our Sustainable Tomorrow.’

While materials based on virgin polymer resins have well-defined and consistent properties, working with recycled materials or finding ways to reduce carbon footprint presents new challenges that require experimentation to solve. Often custom solutions need to be created considering the waste stream and the application. This is why GCR believes collaborative partnerships in ‘co-creation’ projects within the value chain are vital. The new 2000 square meter Innovation Hub concentrates the technical expertise of GCR’s talented team. It includes all the equipment necessary for incubation and proof of concept from development to pilot plant and final production.

Existing collaborations involve technical institutions, equipment suppliers, raw material and waste-stream suppliers, plastic converters and brand owners. GCR also offers turn-key project management where customers completely trust GCR’s capabilities. “We prefer to send you all our scrap because the quality you’re getting out of it is something we will never reach,” quoted a major converter.

GCR’s extensive materials know-how and relentless attention to quality are reflected in existing product ranges. CICLIC R-polyolefins (Recycled polyolefins) are based on ‘up-cycling’ fully traceable waste streams and can deliver similar and consistent material properties as virgin plastics with 60-80 percent lower Carbon Footprint certification.

GRANIC mineral-filled masterbatches and compounds can offer up to a 30 percent reduction in energy costs in downstream polymer processing. In addition to an extensive range of existing products, the Innovation Hub combines GCR’s comprehensive technical and processing expertise to customise products and bring solutions to the challenges encountered when using post-consumer or post-industrial waste or carbon footprint/LCA improvement. GCR can enhance the value of waste streams through, for example, compatibilizers or capturing/blocking odour-producing bacteria. In addition, it has developed bio-polymer-based and biodegradable solutions.

“We firmly believe that we have the capability, agility and vision to accelerate the circular economy,” says Santiago Sans, Innovation Director at GCR. “Through this investment, we demonstrate our belief in collaboration with like-minded partners in the value chain.”

Finding new sustainable solutions will require changes in how the plastics industry traditionally works; a combination of know-how, new ways of thinking, and a long-term vision. GCR’s investments in Innovation Hub and the new recycling plant bring new tools to help facilitate these changes. This is another example of GCR’s long-term commitment to the circular economy.

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