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Discover our valves and system solutions to match your industry.
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Discover the variety of high-quality industrial valves and system solutions from ARI®.
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ARI-Armaturen: News

News from and about ARI®

On this page you will find news, the latest information and expert articles from the world of industrial valves as well as about ARI® as a company.

Latest news and helpful technical articles

Company News

news_new_website_en_web

Welcome to our new website!

Thursday, August 14, 2025

We’re excited to welcome you to the redesigned ARI-Armaturen website! With a fresh look, improved structure, and user-friendly navigation, you’ll now find what you’re looking for even faster – whether it’s product information, services, or direct contact options.

Product News

news_ZESA GESA Nextg3n EN_web

ZESA®/GESA®

Friday, July 18, 2025

The first soft-sealing butterfly valve with three optimised disc designs for improved Kvs values as well as a less turbulent flow and therefore shorter outlet pipe lengths.

Company News

news_75 Jahre EN web

We’re in the year 1950...

Wednesday, July 16, 2025

Since 1950, ARI-Armaturen has stood for quality, innovation and reliability. Join us as we look back at defining milestones, technical innovations and memorable moments from over seven decades of company history.

Product News

news_ZEDOX HEXO EN_web_

ZEDOX® HEXO

Tuesday, July 15, 2025

Our double offset butterfly valve for significantly optimised Kvs values. Now with TSO tight-shut-off end stops as a standard feature for a safe closed position even with bare shaft.

Company News

Warren_People_5

ARI-Armaturen acquires Warren Controls

Monday, August 19, 2024

Bethlehem, PA – 12 August 2024 – ARI-Armaturen Albert Richter GmbH & Co. KG (ARI), a leading European valve-industry company, has announced the acquisition of Warren Controls, Inc., a control valve company based in Bethlehem, Pennsylvania. The acquisition is part of ARI’s strategic plan to expand its presence in the USA and strengthens its position as a global player in the valve industry. The acquisition of Warren Controls brings with it a wealth of experience and expertise in the control valve industry, which will complement ARI’s existing capabilities in the USA. The acquisition will also enable ARI to expand its product portfolio and offer its customers a wider range of products and services.

Company News

SafeContractor-Approved

Top Safety Accreditation for ARI® UK

Monday, June 10, 2024

Local business ARI-Armaturen UK has been awarded accreditation from Alcumus SafeContractor for achieving excellence in health and safety in the workplace.

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Valve solutions for hydrogen applications

Thursday, April 1, 2021

Hydrogen is considered to be a versatile energy carrier of the future that does not emit direct greenhouse gases in use. At the same time, the medium hydrogen places high demands on valves. Hydrogen is the lightest element in the periodic table, has a high gravimetric energy density and can lead to material embrittlement under certain conditions. Key aspects to be considered when selecting valves for use in hydrogen are outlined in the following article:

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Advanced environmental protection – the ZETRIX way!

Tuesday, March 1, 2016

Both TA-Luft [1] and DIN EN ISO 15848-1 [2] [3] aim to mitigate or reduce fugitive emissions which are harmful to the environment and human health. TA-Luft is a comprehensive German regulation which specifies binding technical requirements for classified installations in accordance with the 4th Federal Emmission Control Act. EN ISO 15848-1 [2] [3] is an international standard which provides users with evaluation criteria for classifying valves (isolation and control devices), to enable different designs or brands to be compared. Although compliance with the requirements of TA-Luft is considered to be proof of a sealing system’s quality –not just in Germany but in many other countries too – EN ISO 15848-1 [2] [3] is playing an increasingly important role in the chemical, petrochemical and process industries.

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Operational Behaviour of Safety Valves with Constant Superimposed Backpressure

Wednesday, April 1, 2015

When selecting spring loaded safety valves, an accurate knowledge and consideration of the specific operating conditions are vital to ensure that these devices work reliably. As optimal resource use becomes an increasingly relevant criterion, plant owners focus particular attention on components that can be depended on absolutely – even at their physical limits. In the design of a safety valve, the existence of a backpressure must be considered in addition to the usual parameters for dimensioning. In this present report, the function of a safety valve is intended to be shown when a constant superimposed backpressure is present in the discharge and thus acts against the direction of opening of the safety valve.

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Water hammer in valves – solutions to improve stability

Monday, October 18, 2010

Very strong pressure pulses or surges, also referred to as water hammer, often occur in fluid-conducting pipes. The stresses on the pipes, valves and apparatus can be so high that the equipment concerned is damaged – or in extreme cases actually bursts. Before effective measures can be taken to combat this problem, it is important to analyse exactly which kind of water hammer is involved and what causes it. No matter how carefully a facility is planned and constructed, the risk of pressure surges cannot always be completely ruled out, particularly if the plant is modified or extended or the operating mode changes frequently. If the plant components are designed with sufficient stability, half the battle is won.

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Back pressure safety valves

Thursday, April 29, 2004

When dimensioning and selecting safety valves for vessels and installations, it is important that this fitting should not be considered as being separate from its supply and blow-off pipes. The pressure and flow situation in neighbouring pipes and installation components may have an appreciable adverse influence on the functioning of safety valves. The resulting reduction of the mass flow leads to a rise in pressure. In extreme cases, unstable functioning behaviour in the form of flutter and hammering may lead to the valve becoming torn away. An accurate knowledge of the behaviour of safety valves and of the admissible limits in relation to back pressure, is a condition of avoiding the problems described. Various regulations [1,2,3] either specify the admissible back pressure, or refer to the manufacturers of the safety valves.

Product News

news_ZESA GESA Nextg3n EN_web

ZESA®/GESA®

Friday, July 18, 2025

The first soft-sealing butterfly valve with three optimised disc designs for improved Kvs values as well as a less turbulent flow and therefore shorter outlet pipe lengths.

Product News

news_ZEDOX HEXO EN_web_

ZEDOX® HEXO

Tuesday, July 15, 2025

Our double offset butterfly valve for significantly optimised Kvs values. Now with TSO tight-shut-off end stops as a standard feature for a safe closed position even with bare shaft.

Company News

news_new_website_en_web

Welcome to our new website!

Thursday, August 14, 2025

We’re excited to welcome you to the redesigned ARI-Armaturen website! With a fresh look, improved structure, and user-friendly navigation, you’ll now find what you’re looking for even faster – whether it’s product information, services, or direct contact options.

Company News

news_75 Jahre EN web

We’re in the year 1950...

Wednesday, July 16, 2025

Since 1950, ARI-Armaturen has stood for quality, innovation and reliability. Join us as we look back at defining milestones, technical innovations and memorable moments from over seven decades of company history.

Company News

Warren_People_5

ARI-Armaturen acquires Warren Controls

Monday, August 19, 2024

Bethlehem, PA – 12 August 2024 – ARI-Armaturen Albert Richter GmbH & Co. KG (ARI), a leading European valve-industry company, has announced the acquisition of Warren Controls, Inc., a control valve company based in Bethlehem, Pennsylvania. The acquisition is part of ARI’s strategic plan to expand its presence in the USA and strengthens its position as a global player in the valve industry. The acquisition of Warren Controls brings with it a wealth of experience and expertise in the control valve industry, which will complement ARI’s existing capabilities in the USA. The acquisition will also enable ARI to expand its product portfolio and offer its customers a wider range of products and services.

Company News

SafeContractor-Approved

Top Safety Accreditation for ARI® UK

Monday, June 10, 2024

Local business ARI-Armaturen UK has been awarded accreditation from Alcumus SafeContractor for achieving excellence in health and safety in the workplace.

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Valve solutions for hydrogen applications

Thursday, April 1, 2021

Hydrogen is considered to be a versatile energy carrier of the future that does not emit direct greenhouse gases in use. At the same time, the medium hydrogen places high demands on valves. Hydrogen is the lightest element in the periodic table, has a high gravimetric energy density and can lead to material embrittlement under certain conditions. Key aspects to be considered when selecting valves for use in hydrogen are outlined in the following article:

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Advanced environmental protection – the ZETRIX way!

Tuesday, March 1, 2016

Both TA-Luft [1] and DIN EN ISO 15848-1 [2] [3] aim to mitigate or reduce fugitive emissions which are harmful to the environment and human health. TA-Luft is a comprehensive German regulation which specifies binding technical requirements for classified installations in accordance with the 4th Federal Emmission Control Act. EN ISO 15848-1 [2] [3] is an international standard which provides users with evaluation criteria for classifying valves (isolation and control devices), to enable different designs or brands to be compared. Although compliance with the requirements of TA-Luft is considered to be proof of a sealing system’s quality –not just in Germany but in many other countries too – EN ISO 15848-1 [2] [3] is playing an increasingly important role in the chemical, petrochemical and process industries.

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Operational Behaviour of Safety Valves with Constant Superimposed Backpressure

Wednesday, April 1, 2015

When selecting spring loaded safety valves, an accurate knowledge and consideration of the specific operating conditions are vital to ensure that these devices work reliably. As optimal resource use becomes an increasingly relevant criterion, plant owners focus particular attention on components that can be depended on absolutely – even at their physical limits. In the design of a safety valve, the existence of a backpressure must be considered in addition to the usual parameters for dimensioning. In this present report, the function of a safety valve is intended to be shown when a constant superimposed backpressure is present in the discharge and thus acts against the direction of opening of the safety valve.

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Water hammer in valves – solutions to improve stability

Monday, October 18, 2010

Very strong pressure pulses or surges, also referred to as water hammer, often occur in fluid-conducting pipes. The stresses on the pipes, valves and apparatus can be so high that the equipment concerned is damaged – or in extreme cases actually bursts. Before effective measures can be taken to combat this problem, it is important to analyse exactly which kind of water hammer is involved and what causes it. No matter how carefully a facility is planned and constructed, the risk of pressure surges cannot always be completely ruled out, particularly if the plant is modified or extended or the operating mode changes frequently. If the plant components are designed with sufficient stability, half the battle is won.

Technical Articles

knowledge-specialist-articles-industrial-valves-ari-armaturen

Back pressure safety valves

Thursday, April 29, 2004

When dimensioning and selecting safety valves for vessels and installations, it is important that this fitting should not be considered as being separate from its supply and blow-off pipes. The pressure and flow situation in neighbouring pipes and installation components may have an appreciable adverse influence on the functioning of safety valves. The resulting reduction of the mass flow leads to a rise in pressure. In extreme cases, unstable functioning behaviour in the form of flutter and hammering may lead to the valve becoming torn away. An accurate knowledge of the behaviour of safety valves and of the admissible limits in relation to back pressure, is a condition of avoiding the problems described. Various regulations [1,2,3] either specify the admissible back pressure, or refer to the manufacturers of the safety valves.

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Your contact at ARI®:

ARI-Armaturen Albert Richter GmbH & Co. KG

Mergelheide 56-60

D-33758 Schloß Holte-Stukenbrock

Phone: +49 5207 994-0

Fax: +49 5207 994-297 / -298

Email:

Your contact at ARI®:

ARI-Armaturen Albert Richter GmbH & Co. KG

Mergelheide 56-60

D-33758 Schloß Holte-Stukenbrock

Phone: +49 5207 994-0

Fax: +49 5207 994-297 / -298

Email:

Your contact at ARI®:

ARI-Armaturen Albert Richter GmbH & Co. KG

Mergelheide 56-60

D-33758 Schloß Holte-Stukenbrock

Phone: +49 5207 994-0

Fax: +49 5207 994-297 / -298

Email:

Your contact at ARI®:

ARI-Armaturen Albert Richter GmbH & Co. KG

Mergelheide 56-60

D-33758 Schloß Holte-Stukenbrock

Phone: +49 5207 994-0

Fax: +49 5207 994-297 / -298

Email:

Your contact at ARI®:

ARI-Armaturen Albert Richter GmbH & Co. KG

Mergelheide 56-60

D-33758 Schloß Holte-Stukenbrock

Phone: +49 5207 994-0

Fax: +49 5207 994-297 / -298

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