REVEN successfully certified to ISO 9001:2015

REVEN GmbH has been successfully certified by the certification company DEKRA this week according to the new standard ISO 9001:2015.

The quality management system of the new standard ISO 9001:2015 contains a number of innovations compared to the old ISO 9001:2008 standard. One improvement is that more emphasis is placed on process-oriented approaches and the demand for comprehensive and systematic process management. In addition, knowledge management plays a stronger role than before in order to document the knowledge required for processes and to make it accessible to all employees. The conversion to the new standard ISO 9001:2015 was prepared and implemented by REVEN quality management commissioner Klaus Mann and the external partner & consultant Mr. Biemüller from Hopp & Flaig at an early stage. To this end, they developed a completely new, web- and server-based quality management system with an innovative database-driven approach. The new system enables a clear presentation of all aspects of the REVEN processes as well as their links.

Among other things, DEKRA’s auditor rated the cleanliness and tidiness in the REVEN production area as exemplary for the metal industry, see above figure which shows one of four production halls of REVEN GmbH in Sersheim, 20 kilometres north of Stuttgart.

The REVEN DIN ISO 9001: 2015 certificate can be downloaded here: REVEN Zertifikat Zert ISO 9001:2015 Engl.

Pure competence in air. – Seminars by REVEN

The lunch break is over, and the attendees return to the seminar room at the premises of Rentschler REVEN GmbH in the German town of Sersheim. On that day, the managing director and graduated engineer Sven Rentschler imparts concentrated knowledge about air purification to the ventilation system designers and plant engineers. Currently everybody talks about air quality control. Rentschler REVEN have realized a long time ago that this topic is not only important for the air quality in cities but also for the health and safety at industrial workplaces. Under the slogan “Pure competence in air” Rentschler REVEN have researched for more than 100 years in the field of air cleaning and have developed innovative products for the mechanical, catering, food processing and textile sectors. In addition, they have imparted their knowledge to the relevant branches of industry in seminars and workshops. Whether at the occasion of a conference in Munich, Hannover or Berlin or in the seminar rooms at the company’s site in Sersheim, the attendees from the industry and the economy sector learn in the lectures of Rentschler REVEN GmbH what air cleaning really means and in how many different processes it plays an important role. This is demonstrated with sophisticated technology and on numerous exhibits.

It all began in 1905 when Gustav Rentschler, the great grandfather of the company’s CEO, founded the Gustav Rentschler Flaschnerei und Apparatebau in the German town of Sersheim. Over the time, the company has specialized in air cleaning and gained an international reputation due to its research work, the development of various technologies and the filing of numerous patent applications. In the past twenty years, the company has enhanced its portfolio and has specialized in the manufacture of air cleaners for industrial applications in addition to products for commercial kitchen ventilation.

In his seminar, Sven Rentschler not only gives the engineers and designers an understanding of the different requirements and regulations of the EU and explains how to comply with them in practice, but also makes clear how important air cleaning at workplaces really is, for the company as well as for its employees.

Ill.: In his seminars, Sven Rentschler imparts all the things that are important to know about air cleaning.

In industrial manufacturing processes as well as in the food processing industry and in commercial kitchens, smallest air-borne particles, often referred to as fine dust, are emitted. The air cleaners produced by Rentschler REVEN manage to filter these particles out of the air. This keeps workplaces healthy and clean and protects the environment. “The small particles, invisible to the human eye, can harm the respiratory system and increase the risk of developing cancer, they can also damage sensitive systems and machinery,” explains Sven Rentschler.

The fields of application are widespread. The renowned Swiss manufacturer of exclusive design watches IWC Schaffhausen, for instance, installed over forty REVEN X-CYCLONE air cleaners in its factory at the  beginning of the year.

Ill.: X-CYCLONE air cleaners at IWC at Schaffhausen

These special air cleaners filter all the small particles out of the exhaust air that are emitted during milling, grinding and polishing of the small plates, screws and gears in the clockworks or of the watch glasses. In the Spanish town of Bilbao, air cleaners of the X-CYCLONE C series from Rentschler REVEN run at ITP Aerospace, a company that builds engines for aircrafts such as the Airbus 380. The high-performance oil mist separators extract the air directly from the processing machines and filter in multiple filter stages the smallest particles to keep the workshop free from oil mist and emulsion mist.

Even in the renowned Max Planck Institute for Solar System Research, where researchers in cooperation with engineers construct scientific instruments to explore the universe and to investigate material from the outer space, X-CYCLONE air cleaners provide for pure air. Sven Rentschler succeeded in demonstrating the importance of pure air for a good working climate at the workplace, for the health of the employees and of course for the environment and he also pointed out how to achieve this goal.

The world’s only BIM kitchen ventilation configurator

The REVEN BIM kitchen ventilation configurator is aimed at architects, engineers and other professional planners who want to work with the BIM working method. BIM 3D data as well as software for calculating the correct air volumes of a kitchen ventilation according to the new European standard EN 16282 are freely accessible in the REVEN BIM configurator without registration:

REVEN donates for Ludwigstafel

The LudwigsTafel e.V. is a non-profit and charitable association and offers in the field of food supply, help for the needy, primarily in the Ludwigsburg city, but also in the surrounding area. The project aims to help needy people and financially relieve their everyday lives. In the implementation, various social, diaconal and charitable associations and institutions, as well as individuals, interested groups and promoters cooperate.  

The CEO of the REVEN GmbH, Sven Rentschler himself a personal supporting member of the LudwigsTafel e.V., presented a donation of the REVEN GmbH for the Ludwigstafel in October 2018, combined with the commitment to provide the Ludwigsburger Tafel with a yearly support from now on.

The “RSR graphic” from above shows the “CSR guidelines“ of the REVEN GmbH and their executives. The REVEN executives and project managers follow the mission statement of the Honorable Businessman. Building on the goal of harmonising humanity and economy, the Honorable Businessman develops a sense of responsibility for the things that make his business success:  

– The relationship with his employees. Their satisfaction requires his success. It is important to treat them fairly and humanly, but also to demand discipline and performance.  

– The relationship with his business customers and suppliers, which he also treats according to his principles, with the aim of establishing and maintaining long-term relationships with them. Personal ties strengthen the company. He is also fair to his competitors. 

– His awareness does not end at the factory gate. The Honorable Businessman knows that the society in which he leads his company, is crucial for the company’s success. Here his employees have received their basic education. The publicly financed infrastructure enables the transport of goods and the political system secures the property rights. The relationship with the community in which the company is located, strengthens him, because he owes her to his qualified staff. The company’s reputation in the community also affects the motivation of its employees within the company.

What does the Titleist® and Reven® Research Laboratory have in common?

Filters in kitchen hoods, separators for airborne aerosols (e. g. oil mist separators) have a commonality with golf balls! The smoother, the more polished the surface, the worse these work! Golf balls, kitchen filters, oil mist separators with smooth and highly polished surfaces have serious efficiency shortcomings compared to designs with surfaces that have dimples.  

The serious impact of surface texture has been known for many years in the research of aerosol separators as well as golf balls, and modern golf balls as well as separators have surfaces marked by dimples.

The negative effects of highly polished surfaces in aerodynamics are impressively demonstrated by a video on YouTube from the Titleist® laboratory. Aerodynamics’ senior project manager Nick Nardacci is researching the perfect surface for golf balls, much as Rentschler Reven GmbH is researching the perfect surface for its X-CYCLONE® aerosol separator. Why such basic research in the field of aerodynamics is so important, you can see here:  

More about the X-CYCLONE® aerosol separators with a “golf ball surface” can be found here:

Air cleaner for textile finishing cleans itself

In textile finishing, the Monforts stenter frame * plays an important role

Textile finishing is the coating, lamination, dyeing and printing of fabrics. An important role falls to the stenter. Among other things, it has the task of drying and fixing the treated textiles. The textile web passes through several fields of the clamping frame and is traversed by hot air, which is then blown into the open air. Heat recovery recovers part of the heat energy of the hot air and warms the textile web. This significantly reduces energy consumption. The problem with this: When drying the textile webs and especially during the fixing and condensation process oils and other aerosols are emitted by the textiles in addition to dusts and water vapour. With a textile laundry, the pollution can be reduced, but it is technically not possible to operate a stenter free of emissions. Consequently, cleaning of the exhaust air is urgently required in such machines.

A first cleaning already takes place in the heat recovery. Here, a large part of the pollutants condenses into droplets. Often the exhaust air is further cooled by an air scrubber; The water-soluble pollutant particles are bound to the wash water. However, the scrubbers customary in the textile industry have poor filter performance. With a downstream electrostatic filter, the filter performance can indeed be improved; however, such electrostatic precipitators are very susceptible to interference and cause high operating costs. In the absence of the additional electrostatic filter, the textile refiner Van Clewe in North Rhine-Westphalia has recently started using a special air cleaner for this exhaust air from Rentschler Reven. It is equipped with an X-CYCLON separator and an additional water sprayer. The unwanted particles are washed out to a high degree, then separated from the exhaust air stream by the X-CYCLON separator by centrifuging. The X-CYCLONE separator works purely mechanically and cleans itself practically by itself. Its filter performance almost reaches the efficiency of an electrostatic precipitator. The X-CYCLON separator replaces the originally intended electrostatic precipitator with droplet separator. With the new REVEN X-CYCLON air purifier for waste air, Van Clewe saves on maintenance and energy costs; on top of that the legal limit values ​​for the exhaust air parameters are observed.

For the technical details please open the following PDF: textile_industry_air_cleaner

For further information for the REVEN X-CYCLON air cleaner for exhaust ducts follow this link:

* Stenter frames…… are textile machines from manufacturers such as A. Monforts Textilmaschinen GmbH & Co. KG for the heat treatment of wide webs. They take over the drying of finished textiles and give them their final width and quality by clamping and fixing with hot air. The process takes place at high air temperatures (100 to 210 degrees C).

Understanding Kitchen Ventilation: Measuring and controlling airflows.

The Essentials of Kitchen Ventilation – Understanding Kitchen Ventilation

Exact measurements of the performance of extractor hoods and air supply units are essential for the functionality of kitchen ventilation! Find out which equipment is used for this purpose in the new flyer “Understanding kitchen ventilation correctly”: Understanding Kitchen Ventilation

REVEN & SCHAKO UK intensifying air cleaning distribution in UK and Ireland

With the new product manager Shaun Fairclough at SCHAKO UK, REVEN & SCHAKO UK are intensifying their air cleaner distribution all over UK and Ireland. Shaun Fairclough will be the product manager for the whole REVEN X-CYCLONE product range and his contact data are

Shaun Fairclough 
phone +44 7383 099461
Index House, St George’s Lane
Ascot, SL5 7EU


Shaun Fairclough already has ten years of experience in industrial air purification and thus lives up to our claim of “Pure competence in air.” From now on, Shaun Fairclough will be available to our prospective customers from Great Britain and Ireland as a competent contact person!

REVEN 2019 ePaper catalog for worldwide online access

The new REVEN 2019 ePaper catalog is now available worldwide as an online tool as well as for download. The new REVEN 2019 ePaper catalog is available as an optimised desktop version, as well as a smartphone version for example for Apple or Samsung devices. To start the online web version of the new REVEN 2019 ePaper catalog simply visit

X-CYCLONE® EGU Recirculation hood and RKGN duct air cleaner with RGN99 high-performance granulate for the reduction of organic odour pollution

X-CYCLONE® EGU Recirculation hood and RKGN duct air cleaner with RGN99 high-performance granulate for the reduction of organic odour pollution

RGN99 high-performance granulate for the reduction of organic odour pollution, a food-compliant alternative to activated carbon. Odour reduction by oxidation of odour molecules in the exhaust air. Oxidation with potassium permanganate and volcanic rock zeolite. Odours are eliminated by the reaction with potassium permanganate; residual odour particles are trapped in the molecular sieve provided by the volcanic zeolite carrier material.

Due to the combustion of animal fat and vegetable oil during food preparation, quite a number of complex and aggressive organic gas compounds are produced in kitchens. These kitchen odours are transported by the airflow in the form of molecules. The molecules are far too small to remove them with common separators used in kitchen extraction systems. This task requires special processes. In most cases, odours are eliminated by absorption in an oxidation process with active carbon or by using so-called UV systems.

The RGN 99 system implements a completely new approach to odour elimination, an oxidation process involving potassium permanganate and zeolite. The disadvantage of active carbon separators in kitchen exhaust is that they are highly flammable and emit odours in the saturated state. In most cases, these odours are even worse than the kitchen smells themselves. Other systems such as UV systems are often uneconomical and their real efficiency is often not approved. The service life of the RGN 99 separating medium depends on many different factors, such as the quantity of filter granulate used, the type of odour molecules, the number of particles and the air temperature. Due to the oxidation of odour molecules, the potassium permanganate changes colour with time and turns from purple to brown. This change in colour allows you to monitor the state of the separator.

The RGN99 high-performance granulate for the reduction of organic odour pollution is a major breakthrough in oxidation of odour. The RGN 99 material is build up with an unique molecular sieve impregnated with potassium permanganate. A comparison of REVEN RGN 99 high-performance granulate to activated carbon can be found in the following table:

The X-CYCLONE® EGU recirculation hood with with RGN99 high-performance granulate for the reduction of organic odour pollution can be put together directly in our new configurator: 

The technical data for the X-CYCLONE® RKGN duct air cleaners for the reduction of organic odour pollution can be found here: 

You can find a test report for circulating air hoods with RGN99 high-performance granules here: test report RGN 99 hoods

The RGN99 high performance granulate is also used to reduce odour in garbage rooms, copier & printer rooms, offices and hotel rooms. There, the air can be refreshed overnight with a compact ULTRA CLEANER UC-OH² recirculation unit.

In all of these rooms you will find air pollution by fungi spores, hazardous fine dust, pollen and allergens. Airborne allergens, such as pollen, mildew spores, pet hair and dust mites can seriously affect air quality, particularly for people suffering from allergies. Office employees need clean and fresh air. In particular cases, the operation of a laser printer in an office can produce a particle concentration in the room air as high as that caused by smoking. Scientists found out that the pollution of the air in an office building (under a smoking ban) during worktime is up to five times higher than that of the outside air next to a very busy road.

The compact REVEN recirculating ULTRA CLEANER UC-OH² is one of the world’s most efficient air cleaners and can handle such pollution loads in living and working rooms. The technical data you find here:

Now available with a test report from BAYER® Leverkusen Germany: BAYER_UCOH2_Test

The REVEN distributor for Brazil – ERIMATECH – published this week his new homepage

The REVEN distributor for Brazil – ERIMATECH – published this week his new homepage

The REVEN distributor for Brazil ERIMATECH INDUSTRIAL EQUIPMENT is located between Porto Alegre and São Paulo on the east coast of Brazil. The company was founded by Erivelto Campos and the Erimatech Industrial Equipment distribution company started its activities on the field of representation and consulting in March 2010, always acting in the industrial area, seeking the latest technology for its customers. Always acting in metal mechanics industry with the main goal of introducing now the REVEN products with its unique X-CYCLONE technology all over Brazil. Therefore we are proud to introduce the new ERIMATECH homepage:

REVEN now in the Heinze construction industry network

REVEN on Germany’s leading information platform for construction products, company profiles and architectural objects. The platform provides tailor-made information for architects and planners, such as the tender text manager. As of now, the REVEN tender texts are available in the download formats GAEB XML, GAEB 90, text or PDF. Visit us in the Heinze construction industry network:

UV-C Systems for clean and dry kitchen ventilation exhaust ducts = fake news!

There is no doubt, you can use UV-C or better UV light tubes to reduce odors in kitchen exhaust systems. To keep the exhaust duct line and the air handling unit dry and clean UV or UV-C light tubes are not needed.

Kitchen hood with UV light – picture made without kitchen filters

Did you knew that an intensive UV light, used inside commercial ventilated kitchen hoods, that such a light emits a radiation which can be similar harmful like X-rays? Did you ever told that your people working in commercial kitchens under such kitchen hoods? The only thing which are really told about such systems is marketing propaganda like „it can vaporize and crack oil and grease to white ashes and water…“ such fake news and similar nonsense is told people about UV and UV-C systems for commercial kitchens, instead of telling people what such systems really are: A system which emits very intensive radiation, which is intensive enough to transform oxygen to ozone and to harm human cells badly.

To keep an exhaust duct and an air handling unit of a commercial kitchen clean and dry you just need a real aerosol separator. A real separator not a simple baffle type „kitchen filter“. Real separators have a cyclonic airflow which is developed and validated under CFD systems.

Aerosol separator with Cyclonic airflow

Simple baffle type „kitchen filters“ have no cyclonic airflow, are just cheap and simple and their real separation efficiency is just fake news, because these type of kitchen filter don’t have any real efficiency!

Simple baffle type kitchen filter

How a real aerosol separation system is build up, developed and with what equipment the particle separation performance can be measured and validated you can read here:

Clean and dry exhaust ducts thanks to patented X-CYCLONE separators

Oil mist separators explosion tested

The X-CYCLONE oil mist separators also explosion tested

X-CYCLONE coolants and lubricants aerosol separators from REVEN, for use on tool grinding machines and lathes, are not only tested for flame protection, but have also been tested for their behaviour during machine tool explosions! More under:

REVEN and the SCHAKO CFD competence center in Spain are investigating the introduction of fresh air into commercial kitchens

In commercially used kitchens, on the surfaces of the cooking equipment, some of which are very large, such as frying pans or fryers, an upward rising thermal air flow with pollutants is formed. To capture and extract this airflow with a high efficiency, kitchen ventilation hoods are installed above the cooking appliances. However, it must be noted that the air stream to be extracted is injected in the same ratio again as fresh supply air in the kitchens room.  

However, this injection of fresh air often causes serious errors in the ventilation design! Firstly, a workplace in commercial kitchens is not comparable to conditions of, for example, open-plan offices or concert hall and secondly, it is of considerable importance that the thermal air flow described above is not disturbed by the introduction of the fresh supply air when it comes from the cooking equipment. Often the horizontal injection of fresh supply air has a negative influence on the rising thermal air flow and this is then blown out together with the pollutants from the kitchen ventilation hood, so that the hood can no longer cleanly suck the pollutants. The primary objective of REVEN fresh supply air products is a completely vertical, low-impulsive and laminar introduction of fresh air from top to bottom, without disturbing the reverse flow of the thermal airflow from the cocking equipment. 

In order to make this possible, REVEN has recently started a research project together with the SCHAKO Group’s CFD competence center at SCHAKO IBERIA S.L.. Many manufacturers in the commercial kitchen ventilation sector are claiming that their products for the supply of fresh air have no negative effect on the capturing and sucking of the thermal air flow. However, to date, hardly any manufacturer has really known and truly analysed that on CFD systems and in fluid flow laboratories. For this reason, REVEN together with the CFD competence center of the SCHAKO Group started these analyses in the first quarter of 2018, see the video from above. More detailed results will follow shortly.

REVEN SCHAKO ventilation seminar in Bavaria

REVEN SCHAKO ventilation seminar in Bavaria

A seminar for builders, ventilation designer and plant engineers from Bavaria. As a speaker, Sven Rentschler (CEO of Rentschler Reven) welcomes you. Registration and further information can be found at

If you are interested in our seminars and workshops from other states outside of Bavaria, you can find further information here: