silencers with the u-stamp certification

U-Stamp Certified In-line Silencers: Innovation and Safety for Industrial Compressors

As part of a growing commitment to excellence and internationalization, the first project entirely carried out under U-Stamp ASME certification has recently been completed. This involved a strategic supply of in-line silencers designed for the U.S. market, developed to meet specific acoustic and performance requirements. The result represents a significant milestone in the ability to deliver solutions that comply with the highest global standards.

A Strategic Project for the U.S. Market

the team behind the u-stamp certified silencers

A Leading Client in the Rotating Machinery Sector

The project involved the supply of in-line silencers for dual-stage compressors, intended for a well-known U.S. manufacturer of rotating machinery, a key player in the global industrial sector.

Custom Engineering Based on Client Specifications

Each silencer was designed to meet precise acoustic, fluid-dynamic, and mechanical requirements, tailored to the operating characteristics of the compressors. The design was optimized to ensure high performance in terms of noise reduction and structural reliability.

Performance and Safety, a Comprehensive Engineering Approach

Effective Noise Control Across All Operating Conditions

The silencers were engineered with appropriate safety margins to ensure effective noise attenuation, even under the most demanding working conditions. Acoustic analyses played a key role in validating the expected performance.

Prevention of Acoustic and Mechanical Resonance

Frequency analyses were conducted to prevent resonance phenomena, taking into account the rotational
speeds of the compressors and the natural frequencies of the proposed assemblies. By optimizing geometry, stiffness, and mass distribution, the design eliminated vibration issues throughout the entire operating range.

Certified Internal Cleanliness

As with all products directly connected to compressors, advanced manufacturing techniques were used to ensure the absence of particles larger than 100 microns. Internal cleanliness was certified through flushing tests carried out during final inspections.

u-stamp logo with stopson italiana and stopson turkiye logo

U-Stamp Certification: A Guarantee of Quality and Global Compliance

What is the U-Stamp Certification?

The U-Stamp certification is an official recognition issued by the American Society of Mechanical Engineers (ASME) for pressure equipment built in accordance with ASME Section VIII. It is a mandatory requirement for marketing such equipment in the U.S. market.

Technical and Operational Advantages

With this certification, every phase of the manufacturing process, from design to production and testing, follows strict, traceable procedures. Choices regarding materials, welds, and inspections are made according to the most rigorous international standards, minimizing the risk of failure or malfunction.

Traceability and Registration with the National Board

A major advantage of U-Stamp certification is the possibility of registering the products with the U.S. National Board, an essential step for legal installation of pressure equipment within the United States.

Conclusion

The success of this first U-Stamp certified project demonstrates the ability to deliver advanced, safe, and internationally compliant acoustic solutions. It marks an important achievement that opens new opportunities in the global industrial noise reduction market.

noise barriers for mp impianti

Innovative acoustic solutions: Stopson Italiana’s noise barriers for an heating plant in Milan

Stopson Italiana has successfully completed the design and installation of two noise barriers for a district heating plant in Milan. This project aimed to minimize the acoustic impact of the plant on its urban surroundings, setting a benchmark in noise mitigation for industrial environments.

The project: enhancing acoustic comfort

The plant, characterized by sections for cogenerationboiler heatingthermal exchange, and summer cooling energy production, required targeted acoustic solutions to address the noise generated by ventilation and air-conditioning units.

Stopson Italiana installed two distinct types of noise barriers:

Open acoustic barrier

Positioned at a height of 6 meters and secured to the building’s exterior wall with brackets and uprights, this 3.5-meter-tall barrier is designed to absorb and isolate sound from ventilation groups. Its structure combines acoustic steel panels, offering high performance in noise reduction.

Closed acoustic barrier

Installed on the building’s roof, this 2.5-meter-tall barrier is complemented by acoustic louvers to ensure airflow while reducing noise from air-conditioning units. This enclosed design effectively prevents noise propagation in open environments.

The barriers achieved noise reductions exceeding the client’s expectations, with performance metrics including:

  • 7 dB attenuation for the open barrier.
  • 5 dB attenuation for the closed barrier.

noise barriers for mp impianti

Stopson Italiana’s expertise in acoustic barriers

Stopson Italiana specializes in designing customized acoustic barriers, using materials such as painted steelaluminumcorten steel, and even wood or glass. These solutions cater to diverse industries and applications, including traffic noise control, industrial plants, and energy production facilities.

Each solution is tailored to meet the most stringent technical specifications, ensuring a reduction of noise pollution while preserving operational efficiency.

Conclusion: commitment to a quieter future

This intervention not only underscores Stopson Italiana’s expertise in noise pollution control but also reinforces their commitment to sustainable and innovative acoustic solutions. With this project, the company has once again demonstrated its ability to exceed client expectations, achieving effective noise reduction and improving environmental quality in urban areas.

steam vent silencer for vaultec umisa

Installation of Stopson Italiana Silencers for RDM Cartonboard in Barcelona

Stopson Italiana recently completed a crucial intervention at the RDM Cartonboard paper mill in Barcelona. In collaboration with Valtec-Umisa, the company supplied and installed two silencers: an SPM multi-inlet model and an SVC model with core. These devices ensured maximum noise reduction for the plant, significantly improving its acoustic efficiency.

RDM Cartonboard Project: Technical Details

The RDM Cartonboard plant includes a CPR-50 steam generator capable of producing up to 50,700 kg/h of steam at 12 bar. Stopson Italiana contributed with the installation of two custom silencers to optimize acoustic performance and ensure compliance with noise regulations.

SPM Multi-Inlet Silencer

Functioning Principle and Advantages

The steam vent silencer model SPM was designed to combine all steam lines into a single body. This system allows for the simultaneous operation of two lines, each equipped with a specific diffuser that directs the flow toward the upper absorbing section.

Thanks to this configuration, Stopson Italiana achieved two key objectives:

  • High acoustic performance: noise reduction to 85 dB(A) at one meter.
  • Space optimization: the compact design of the silencer minimizes footprint while maintaining high noise absorption efficiency.

SVC Silencer with Core

Silencers SVC installed for Valtec-Umisa

Customized Design

The SVC model, designed with a three-concentric-ring structure and flanged casing, was specifically developed for bypass lines. This device uses sound-absorbing materials protected by perforated sheets, ensuring optimal performance with minimal pressure loss.

Applications and Performance

The SVC silencer ensures high operational efficiency even at operating temperatures up to 100°C, making it an ideal solution for soundproofing ventilation ducts and bypass systems.

Client’s Feedback: Valtec-Umisa’s Opinion

Miguel Medina, SalesDirector at Valtec-Umisa, stated:

“This is not the first time we’ve relied on Stopson Italiana’s support. Even for this complex project, we were highly satisfied with the quality and performance of the silencers provided.”

Conclusion

The project at the RDM Cartonboard paper mill is another success story for Stopson Italiana. Thanks to customized and innovative solutions, the company once again demonstrated its leadership in the industrial noise control sector.

foto dello stand di stopson ala fiera enlit di milano

Stopson at Enlit Milano 2024: innovation and collaboration for a quieter future

We are pleased to share our experience at Enlit Milano 2024, held from October 22nd to 24th. It was a valuable event, enriched by the collaboration with Stopson Turkiye, MODCON, and PRODINOX, and filled with meetings and discussions with companies and professionals interested in our innovative approach to industrial soundproofing.

During the exhibition, the Stopson team presented our noise control solutions, designed to tackle the most complex acoustic challenges and improve efficiency in work environments. In particular, we highlighted our technologies that promote health and productivity in the workplace, helping to create quieter and more efficient spaces.

Our participation at Enlit was a significant opportunity to strengthen existing relationships and initiate new partnerships with those who, like us, are committed to building a more sustainable and quieter industrial future.

special thank you goes to everyone who visited our booth. We look forward to continuing to work together to design industrial environments that are increasingly efficient, safe, and environmentally friendly.

sincere thank you also to Alice Magno and VMEM for the flawless organization of the event.

Stopson Italiana wishes you a Merry Christmas and an Happy and Safe New Year

Our 2021: new international projects, expansion of the product range within the marine sector, and a return to a face-to-face trade show.

Innovation and progress have been embedded in our DNA since 1965. In the last months, our departments are still growing in number.

Here below some highlights of our last year:

Back to Trade Shows

  • Enlit is the new unified brand for Clarion Energy’s Global Utility Week and POWERGEN series of events. This year the leading trade show in the POWERGEN sector was held in Milan, our city, and finally in attendance, in compliance with safety regulations. It was a pleasure to present the technological features of our soundproofing products, like Vent Silencers, Intake & Stack Silencers, and many more.

 

Expanding our offer for the marine industry

  • SilencERmarine is now part of Stopson Italiana’s assets.
    SilencERmarine is a recognized brand in the world of marine equipment and noise control, specializing in the manufacture of soundproofing systems for the luxury sector of the boating and yachting industry.

As 2021 draws to a close, we would like to wish our customers, communities, partners, and other stakeholders a Merry Christmas! We were proud to continue providing reliable, cutting-edge soundproofing solutions to our customers.

Keep following and supporting us, your trust is our strength.

Stopson Italiana exhibits at Enlit Europe 2021

With its know-how within the Power Generation sector and more than 50 years of activity in industrial soundproofing, Stopson Italiana will join Enlit Europe 2021 (Nov 30-Dec 2) in Milan.

 

What happened to PowerGen Europe?

POWERGEN Europe is now Enlit Europe.

After the first step of a successful co-location of European Utility Week and POWERGEN Europe, we are proud to announce the next step in our journey.
Enlit is the new unifying brand for Clarion Energy’s worldwide series of Utility Week and POWERGEN events. A guiding light for the sector that brings clarity to the global energy transformation and defines the roles of all of those involved.

Meet Stopson Italiana

Stopson Italiana will present the technological features of its soundproofing products, like Vent Silencers, Intake & Stack Silencers, Ventilation & Duct Silencers, Engine Exhaust Silencers, Acoustic Enclosures and many more, in Europe’s leading conference and trade show for the European Power Generation industry.

For all those attending, Stopson Italiana will make available its know-how to support any necessity of developing new soundproofing and noise abatement solutions in the Power Generation Industry following the latest trends guiding the market towards the well-known Energy Transition.

Enlit Europe aims to ignite the spark that will fuel the change we need to give our industry and our planet the brightest possible future.

The central topic of this year is: Accelerate the energy transition.

This year the event plans to offer:

  • An international fair to review the latest industry news;
  • A Summit dedicated to the most strategic issues in which approximately 2000 delegates from the highest corporate offices will take part;
  • Hub Sessions which will offer a more technical content program (accessible to all visitors for free);
  • Initiate! An area that hosts start-ups with their own Start-up program, to promote new and young talents as well as collaboration between universities and research institutes and professionals in the sector;
  • EU Project Zone – A pavilion dedicated to projects financed by the funds of the European Commission, in collaboration with the same.

 Visit us at Enlit Europe, Milan – Booth 16D20 (Italian Pavilion)

➡ CLICK HERE
TO DOWNLOAD YOUR FREE PASS!

Meet us in Milan at Enlit Europe 2021

Stopson Italiana is ready to exhibit at Enlit Europe (f.k.a. Europe Utility Week / PowerGen Europe).

 

Enlit Europe 2021:

Enlit Europe, the unifying brand for European Utility Week and POWERGEN Europe, is part of the Enlit series of energy events and unlike any other – because they are more than just energy events. Enlit is a community that for 365-days a year will collaborate and innovate to solve the most pressing energy-related issues.
At the European edition, the Enlit community will come together for three days in Milan in October to meet and inspire each other and to develop their discussions and actions into a plan for the coming year. And so the Enlit circle begins: a constantly growing, inclusive, and end-to-end forum that addresses every aspect of Europe’s energy transition.

 Visit us at Enlit Europe, Milan – Booth 16D20 (Italian Pavilion)

➡ CLICK HERE
TO DOWNLOAD YOUR FREE PASS!

Meet us at the event

With over 50 years of experience in developing and manufacturing soundproofing solutions, Stopson Italiana has gained a worldwide reputation for innovation, efficiency, and long-lasting performance.
Our products are the barrier against noise for power plants all across the globe. This experience has given us an unparalleled knowledge of the needs within the power generation industry – from industrial and municipal plants to the largest utility installations.

We look forward to meeting you at Enlit Europe 2021 in Milan.

Enlit Europe will take place in Milan (Italy), 30 November – 2 December 2021, and Stopson Italiana will be exhibiting at Italian Pavilion – Booth 16D20.

Meet us in Paris at PowerGen Europe 2019

Stopson Italiana is ready to exhibit at one of the most renowned trade show in the energy sector, PowerGen Europe to be held in Paris, from 12 to 14 November.

 

With over 50 years of experience in developing and manufacturing soundproofing solutions, Stopson Italiana has gained a worldwide reputation for innovation, efficiency, and long-lasting performance.

Our products are the barrier against noise for power plants all across the globe. This experience has given us an unparalleled knowledge of the needs within the power generation industry – from industrial and municipal plants to the largest utility installations.

Stopson Italiana can’t wait to cooperate with you in order to optimize the reduction of your noise level and create the ideal integrated solution for your needs.

We look forward to welcoming you to our booth at Power-Gen Europe 2019 in Paris.

 Visit us at PowerGen Europe, Paris – Booth M12E (Italian Pavilion)

➡ CLICK HERE
TO DOWNLOAD YOUR FREE PASS!

 

European Utility Week and POWERGEN Europe combine to form THE end-to-end energy industry event, discussing the most actual and forward-looking industry challenges and opportunities around the transitioning generation mix, renewable integration, digitalization, energy markets, through to final consumption.

A fantastic business and networking opportunity, the event will showcase cutting-edge content in the form of a free Hub Session Programme and paid-for Summit Programme, and innovative technology solutions and services around storage, gas grid, power to X, lifecycle management, digitalization and more, that will help guide us as we pursue our industry goals of decarbonization targets set through to 2050

PowerGen Europe will take place in Paris (France), 12 – 14 November 2019, and Stopson Italiana will be exhibiting at Italian Pavilion – Booth M12e.

Stopson Italiana exhibits at PowerGen Europe 2019 – Paris

With its know-how within the Power Generation sector and more than 50 years of activity in industrial soundproofing, Stopson Italiana will join PowerGen Europe 2019 in Paris.

 

Stopson Italiana will present the technological features of its soundproofing products, like Vent Silencers, Intake & Stack Silencers, Ventilation & Duct Silencers, Engine Exhaust Silencers, Acoustic Enclosures and many more, in Europe’s leading conference and exhibition for the European Power Generation industry.

For all those attending, Stopson Italiana will make available its know-how to support any necessity to develop new soundproofing and noise abatement solutions in the Power Generation Industry.

For 2019 edition at PowerGen Europe, renewable fuels, technologies, and integration together with Digitalization and Cybersecurity are recognized as the main topics. Summit and hub sessions will be available for progress and for a smarter energy future. The program forms the backbone of what has become the largest and most prestigious energy event in Europe.

  • Renewables is a lot more than wind and solar. We take a look at innovative biomass, biogas, waste to energy and anaerobic digestion projects and the future role of these energy sources. Under the microscope is the range of technologies that are facilitating the integration of conventional and renewable generation, including the various forms of energy storage, conversion to heat and cooling, demand-side response and incorporating plug-in electric vehicles operation into the grid.
  • Digitalization is affecting every aspect of the energy sector, however many of its most effective and measurable deployments are on conventional generation equipment. The program at POWERGEN Europe will highlight how to apply cutting-edge software to fine-tuned hardware, and also show how to make your business ready to adapt to the digital age, including the changes needed in an organization to make it cyber-secure.

POWERGEN Europe debuted in Paris in 1993 and over the next 25 years, established itself as the centrepoint for the power generation sector to present the latest solutions, meet, exchange ideas, share knowledge and address the key issues affecting the industry. The event has seen the launch of cutting edge technologies from the world’s leading power engineering innovators and has been the nexus for business deals and projects that have transformed the industry.

 Visit us at PowerGen Europe, Paris – Booth M12E (Italian Pavilion)

PowerGen Europe will welcome 18,000 industry experts, 800+ exhibitors, 500+ speakers, and 550+ utilities & grid operators in Paris. POWERGEN Europe and European Utility Week is the place where the entire community of smart utility professionals meets to seek out solutions, sign new partnerships and build on relationships that will affect business models for the better.

European Utility Week will co-locate with POWERGEN Europe in Paris, offering an end-to-end European energy experience for the whole energy supply chain, under one roof.

PowerGen Europe will take place in Paris (France), 12 – 14 November 2019, and Stopson Italiana will be exhibiting at Italian Pavilion – Booth M12e.

Enel Green Power soundproofs the Generation Group No. 3 of hydroelectric power plant in Bordogna with Stopson Italiana’s Acoustic Enclosures

Included in the supply are the ante-operam surveys, the design, the construction, the installation and the phonometric measurements of an acoustic booth, for the historic plant in Moio de Calvi, val Brembana.

 

The soundproofing intervention consisting of an acoustic enclosure for the Enel Green Power plant in Bordogna has recently been completed.

The acoustic cabin was designed to be installed inside the beautiful power plant built in 1932 which, exploiting a useful jump of 546.55 meters and a maximum derivable flow of 12 square meters/sec through two forced pipes that feed 3 hydraulic turbines Pelton is in able to provide efficient power of around 47,000 KW.

Acoustic Enclosure, Bordogna Hydroelectric Plant (Italy)

With a size of 11.6 x 11.1 x 3.8 m, the structure has been made accessible and completely removable by means of a bridge crane in its upper part, in order to facilitate the management of the turbine components.

The air outlet from the system has been designed using an electric fan, which, when coupled to a silencer, expels air outside the plant through an opening located on the central window.

The soundproof cabin was designed to guarantee an average residual sound pressure level of 78 dB (A), measured at 1 m from the cabin and 1.7 m from the floor.

Stopson Italiana acoustic enclosures are modeled around every type of noisy equipment, internal or external, on skid and on the ground. They are designed to provide excellent attenuation of sound emissions in any critical environment. The realization takes place in modular acoustic panels and coatings for noise insulation, guaranteeing at the same time the maintenance of the equipment, ventilation, weather protection and fire safety.

 

The typical applications of acoustic enclosures are:

  • Energy production systems, including gas turbine steam turbines, traditional and industrial recovery boilers, diesel generators;
  • Cogeneration plants (CHP);
  • Natural gas compression networks and facilities;
  • Manufacturing and process industry: for example the automotive industry, paper industries, printing houses, etc.

 

⟶ More information about Stopson Italiana Acoustic Enclosures here.