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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.

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.

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.

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.

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.

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.

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.

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:

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.

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.