Experience the benefits of ARI STEVI control valve technology and increase your efficiency with flexible, powerful and precise solutions for control, mixing/distribution and shut-off - even under the most demanding conditions.

You can also rely on the intelligent PREMIO-Plus 2G electric linear actuator and the DP pneumatic actuators! With over four decades of experience in the development and sale of state-of-the-art control valve technologies, ARI is your experienced partner you can rely on.

Discover ARI's impressive product diversity with our STEVI control valves, which impress with their precision, durability and flexibility. The STEVI BR 470 impresses with its high control accuracy thanks to optimized flow paths and variable Kvs values that can be individually adjusted. The multi-stage internal trim makes it the ideal solution for demanding applications. The STEVI BR 448 impresses with its stem sealings, which have been tried and tested millions of times, and its further optimized service life. Thanks to 360° rotatable actuators and a flexible internal fitting, it offers excellent handling. The STEVI BR 440 combines precise positioning behavior with an impressive positioning ratio of 50:1 and offers variable stem sealing variants.

You too can benefit from our control expertise and attend our training courses in Germany and abroad! ARI - your partner for innovative control technology and strong partnerships!

The full-lift safety valve SAFE® series 900 is a spring-loaded safety valve with high capacity and has a robust and rapid opening characteristic. The SAFE® series 900 is type-approwed in accordance with VdTÜV, EN ISO 4126-1, AD2000-A2, TRD421 and ASME Sec. XIII. The full-lift safety valves SAFE® series 900 are classically used in hot water and steam systems as well as industrial applications with high capacity.

• Balanced bellows are compensated build up and super imposed back pressure and are additionally redundant tight with primer and secondary sealing, including a redundant balanced piston

• Low pressure balanced bellows for blow-down systems in chemical industries.

• Compliance with stricter emission limits in systems with critical media in accordance with EN ISO 15848-1, TA-Luft, VDI2440

• Protection of the spring room and guiding against dirt particles and aggressive media. Avoid spring and guide corrosion.

• The low-pressure bellows increases the range of our portfolio and gives us more opportunities to become active in critical areas. For the market launch, we will be able to supply SAFE and SAFE-P with VdTÜV- approved balanced bellows in the pressure range of 0.3 - 3 barg. Sales from Q1, 2026

Additionally approved:

-  For compact applications are the horizontal installation
for Series 900 and 920 VdTÜV type approved.

The disc of the ZETRIX^® valve can completely shut off the flow of liquid and gaseous media by means of a 90° open/closed swivel movement. This butterfly valve is versatile, has a long service life and is reliably sealed even under the toughest operating conditions.

Your Advantages

• Available soon in a cryogenic version for temperature ranges from –196 °C

• Long service life thanks to maintenance-free and stellited sealing seat as a standard version

• Friction-free and wear-free pivoting of the valve disc due to optimised contact and closing angles

• "Intelligent" lamellar sealing ring (self-centering due to floating bearing) ensures a uniform radial closing force with minimal effort

• Hardened bearing bushes for the one-piece safety shaft

The triple eccentric design of the disc (maximum closing force with minimum effort) is supported by an ‘intelligent’ sealing ring (uniform closing force, as it is self-centring and floats freely on the sealing surface). The multitude of additional safety options, which are always included, such as the armoured, stellited sealing seat (Stellit™ 21) as standard across all nominal sizes, supports the so-called metallic sealing principle throughout the entire life cycle and beyond. Conventional cycles consider a period of up to a maximum of 20 years, whereas ZETRIX and its finite element method-based, detailed development assumes an operating life of 30 to 50 years, among other things.

This robust durability offers unique performance in a wide range of applications across almost all areas and applications in industry, petrochemicals and building services engineering.

Areas of Use

Markets (excerpt)

• Industry (e.g. paper, steel mills)

• HVAC

• Shipbuilding

• Oil & Gas (e.g. oil and gas processing, refineries, petrochemicals)

Applications (excerpt)

• Autoclave evaporation

• Energy recovery

• LPG loading and unloading

• Building air conditioning

Flow Media (excerpt)

• Water

• Steam

• (District heating) Hot water

• Vapours

• Chemicals

• Acids

The ZETRIX® triple eccentric butterfly valve is also available with special drive technology, whether pneumatic or, for example, electro-hydraulic, which, among other things, also offers a so-called safety quick closure (#ESD) in less than 1 second for the switching process, the rotational movement of the butterfly valve disc.

The extensive portfolio is currently being expanded to include a cryogenic version for temperature ranges from -196 °C to -60 °C. Our ZETRIX standard range offers you a choice of temperature ranges from -60°C to +550°C in nominal pressure ratings PN 6 to PN 100 or in ASME ANSI Class 150, 300 and 600.

The CONA® series steam traps from ARI-Armaturen stand for maximum efficiency and reliability in steam technology. As an essential component of every modern steam system, CONA® steam traps ensure the precise and reliable discharge of condensate. They make a decisive contribution to increasing energy efficiency and operational safety by minimising steam losses and at the same time preventing water hammer.

Thanks to their robust design and high-quality manufacturing, CONA® steam traps are ideally suited for use in demanding industrial applications. They offer a long service life and ease of maintenance, which significantly reduces operating costs. The series includes various types such as the float-controlled CONA®S, thermostatic CONA®M, bimetallic CONA®B and the thermodynamic steam trap CONA®TD, which can be selected to suit the specific requirements.

With the CONA® steam traps from ARI-Armaturen, you benefit from proven technology that optimises your processes and sustainably improves your system performance. Place your trust in the many years of experience and quality of ARI-Armaturen and increase the efficiency of your steam system by using CONA steam traps.

ARI-Armaturen is a manufacturer of valves for steam and condensate systems, such as automated control valves, steam traps and safety valves.

In addition, ARI-Armaturen offers system engineering solutions such as heat exchanger systems, condensate recovery systems and pressure reducing systems for thermal processes.