SAFETY IN THE PLANT Breather valve for overpressure and vacuum safety


Protection for low-pressure tanks in a wide range of industries


In all industries in which sensitive process media are used, the highest demands are placed on maintaining the quality, shelf life and product purity of the processed liquid or solid substances. This is often the case in the food industry and in the chemical and pharmaceutical sectors.


The ELEVENT breather valve from REMBE protects vessels with low design pressures against overpressure and vacuum in a pressure range of 2–200 mbarg. This makes it the optimum solution for low-pressure vessels inside storage tanks, dryers and other vessels in the chemical, pharmaceutical and food industries.


For example, ELEVENT is ideal for use in dryers in which free-flowing process media, such as cocoa, raw tablet materials or teas, are processed under vacuum. If the vacuum pressure inside the vessel begins to drop, the valve opens and thus ensures targeted pressure equalisation, which is of immense importance both for the stability of the dryer as well as the quality of the sensitive substances inside. Controlled maintenance of the pressure level is achieved via a very low leakage rate of up to 1x10-6 mbar x l/sec. This prevents both emissions of volatile gases or other environmentally harmful substances, as well as the formation of explosive mixtures or a potentially dangerous ingress of air.


The ELEVENT’s modular design makes it possible to manufacture the individual parts of the breather valve from different materials, such as stainless steel or Hastelloy, and to use special coatings, such as Halal, to meet the challenges of the respective processes. The use of housing clips not only allows the individual components and gaskets to be selected in accordance with the relevant process conditions, such as extreme temperatures, pressures and process media – but also ensures they can be replaced without a problem. Maintenance and cleaning work can also be carried out quickly and easily.


For substances that require high product purity, oxidation is one of the greatest dangers. If oxygen or gases from the atmosphere penetrate inside the vessel, there is a risk of significant economic damage for the company concerned. To prevent this, the -KLI version of the ELEVENT features an inerting connection that introduces the required amount of nitrogen to prevent subsequent reactions with the medium.


All in all, REMBE’s ELEVENT represents a safe solution for plants in a wide variety of fields. Indeed, numerous market- leading plant manufacturers worldwide have already chosen to rely on the high quality and efficiency of the ELEVENT breather valve.


About REMBE – the REMBE Alliance introduces itself Most people associate REMBE with REMBE GmbH Safety+Control, the specialist for explosion safety and pressure relief worldwide. The company offers customers cross-industry safety concepts for plants and equipment. All products are engineered in Germany and meet the requirements of national and international regulations. REMBE customers include market leaders in various industries, including the


APRIL 2026


Fig. 1: ELEVENT breather valve


food, timber, chemical and pharmaceutical industries.


The company’s engineering expertise is based on over 50 years of application and project experience. As an independent, owner-managed family business, REMBE combines expertise with the highest quality standards and is involved in various specialist committees worldwide. Short coordination paths allow for quick reactions and customer-specific solutions for all applications, from standard products to high-tech special designs.


In addition to REMBE GmbH Safety+Control (www.rembe.de) with around 350 employees worldwide - headquartered in Brilon (Hochsauerland, Germany) - and numerous subsidiaries in Italy, Finland, Brazil, USA, China, Dubai, Singapore, South Africa, Japan and Korea, five other companies operate under the REMBE umbrella brand:


• REMBE Research+Technology Center GmbH (www.rembe- rtc.de)


• REMBE Advanced Services+Solutions GmbH (www.rembe- services.de)


• REMBE Kersting GmbH (www.rembe-kersting.de)


• REMBE FibreForce GmbH (www.argusline.de)


• Simar GmbH (www.simar-int.com/) hello@rembe.de www.rembe.de


Enquiry No. 9


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