Panoramica
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.
Valvole di ritegno e arresto RVA | |
variante | dritta o angolata |
materiale | acciaio o acciaio inox |
dimensioni nominali | DN 10-200 |
pressione nominale | PS 25, PS 40, PS 63 |
intervallo di temperatura | da -60 °C a +150 °C |
collegamento | estremità DIN, ANSI saldate testa a testa estremità DIN, ANSI flangiate estremità saldate estremità a vite |
altro | estensione del coperchio cuscinetto a sfera lineare |
Stop Check Valve type RVA
Valvole a blocco automatico tramite la direzione inversa del flusso.
Valvole di ritegno con stelo ascendente e tenuta ad anello in PTFE sul blocco dello stelo, con cono di regolazione.
Valvole di ritegno a forma di morsetto con/senza smorzatore integrato o con smorzatore integrato e cuscinetto per mandrino lineare.
Welcome to the world of simplicity with GEA Service Kits for reciprocating compressors. Our mission is clear - to make your experience with original spare parts seamless and your operations smoother than ever. "Take it easy, use a kit" is not just a tagline – it is a promise we deliver on.
PR-OLEO® premium-quality ammonia refrigeration oils are highly refined 2-stage hydrocracked lubricants formulated specifically for use in ammonia refrigeration systems with either reciprocating or screw compressors.
Un'integrazione efficace al sistema di refrigerazione. L'essiccatore di ammoniaca rimuove l'acqua dal ciclo refrigerante per un'aggiunta ideale al sistema di refrigerazione di ammoniaca insieme a filtri e spurgatori.