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Valvole di ritegno e arresto RVAK

GEA check valves open autonomously by the pressure which is exerted by the working medium upon the valve disc. RVAK stop check valves have a lifting stem to permanently close the valve and a cone on the underside of the valve disc to regulate the medium flow. They start to open at a differential pressure of 0.01 to 0.05 bar and are fully open between 0.1 and 0.2 bar. As soon as the flow is interrupted or the flow direction is reversed, the valve closes automatically. Additionally, RVAK stop check valves may also be closed manually with a handwheel or a ratchet attached to the lifting stem. Rotating the stem clockwise will keep the valve disc down on the valve seat and therefore keeps the valve closed, counter-clockwise rotation will enable the valve disc to be opened by the pressure of the medium. The cone on the underside of the valve disc allows the medium flow to be regulated. The maximum diameter of the cone corresponds to the valve’s nominal diameter. The built-in damping device makes this type of valve especially suitable in cases where the power requirement / flow rate fluctuates. GEA stop check valves are designed for installation in the refrigerant circulation of industrial refrigeration systems. They are installed on either the pressure or suction side of compressors or in pipes in which only one direction of flow is intended. The spindle sealing is provided by a threaded bush with spring-elastic PTFE ring.

GEA AWP RVAK Stop Check Valve

Stop Check Valve type RVAK

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Cows in a pasture

Zoccoli sani, animali più sani

Negli allevamenti vige una regola semplice ma fondamentale: gli zoccoli devono essere sani. Quando questo presupposto viene meno, le prestazioni, il benessere e l'efficienza ne risentono immediatamente, a prescindere da quanto all'avanguardia possa essere l'azienda.

Opening of the new GEA Pharma Technology Center in Elsdorf: Johannes Giloth (COO, GEA), Michael Asenkerschbaumer (Managing Director Lyophilization), Andreas Heller (Mayor of Elsdorf), Prof. Dieter Kempf (Chairman of the Supervisory Board, GEA), Mona Neubaur (Minister of Economic Affairs of North Rhine-Westphalia) and GEA CEO Stefan Klebert (front row, from left to right). (Photo: GEA)

GEA opens new technology center, strengthening its position in the growing pharmaceutical applications market

Together with Mona Neubaur, Minister of Economic Affairs of the German state of North Rhine-Westphalia, GEA CEO Stefan Klebert has opened a new technology center for pharmaceutical freeze-drying systems in Elsdorf, Germany. GEA employs approximately 260 people at the facility, which combines research and development with production and service under one roof.

Children drinking water

Trasformare le acque reflue in valore

Le centrifughe GEA consentono il riutilizzo delle acque reflue, il recupero delle risorse e la sicurezza idrica, trasformando i biosolidi in valore in un mondo che deve affrontare una crescente scarsità d'acqua.

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