Panoramica

Valvole di ritegno e arresto RVA

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

Downloads

Approfondimenti GEA

Shifts in food packaging: 4 trends

Thermoforming has long played a central role in food packaging. Now it is facing a major shift. As regulations tighten, materials evolve and costs rise, form fill seal lines must do more than run reliably – they now shape how food stays fresh, affordable and recyclable. Take a look at the key thermoforming trends informing the food packaging and delivery landscape.

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

GEA Cloud: macchine connesse grazie all'IA Industriale

Ecco come le macchine digitalizzate di GEA si connettono a GEA Cloud per ottenere informazioni approfondite basate sull'IA, migliorare l'operatività e promuovere prestazioni industriali sostenibili.

Betko - South African packhouse

La conservazione della frutta in Betko: controllo dalla raccolta alla consegna in tutto il mondo

Dai frutteti del Capo agli scaffali dei negozi in 40 paesi, l’azienda sudafricana Betko ha costruito il proprio business puntando su freschezza, tempi rapidi e affidabilità. Grazie alla tecnologia di refrigerazione in atmosfera controllata di GEA, l’azienda è ora in grado di conservare mele e pere fino a 14 mesi e di ridurre il consumo energetico del 20%, il tutto grazie a una collaborazione che dura da oltre 30 anni.

Ricevi notizie da GEA

Resta in contatto con le innovazioni e le storie GEA iscrivendoti alle news di GEA.

Contattaci

Siamo qui per aiutarti! Solo pochi dettagli e saremo in grado di rispondere alla tua richiesta.