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Válvulas de Retenção RVA Stop

GEA check valves open autonomously by the pressure that is exerted by the working medium upon the valve disc. 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, RVA 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 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 industrial heating and 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 stem sealing is provided by a threaded bush with spring-elastic PTFE ring.

GEA AWP RVA Stop Check Valve

Stop Check Valve type RVA

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Insights da GEA

Person using a tablet to inspect stainless‑steel industrial equipment with GEA‑branded valves and piping.

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Descubra como as máquinas capacitadas digitalmente da GEA se conectam à GEA Cloud para gerar insights baseados em IA, melhorar o tempo de atividade e promover um desempenho industrial sustentável.

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The aviation industry wants to use more sustainable aviation fuel, but supply is limited. To meet demand and secure cleaner air travel, suppliers need to unlock resources from existing sidestreams like fats and oils. How to scale up? That’s where GEA comes in.

In 1926, Ramesohl & Schmidt (later Westfalia Separator AG) launched their first bucket milking system. The Kirchhoff family was among the first to use it on their farm in Germany.

Do balde de ordenha ao robô: 100 anos de inovação agrícola na GEA

Há mais de 100 anos, a GEA vemk desenvolvendo tecnologias para a pecuária leiteira - desde as primeiras ordenhas de balde até os sistemas autônomos e conectados digitalmente. Essas inovações transformaram fundamentalmente a pecuária leiteira: longe das rotinas de trabalho intensivo, em direção a maior produtividade, bem-estar animal e operações diárias mais eficientes.

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