Overzicht
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.
RVA stopkeerkleppen | |
ontwerp | recht of haaks type |
materiaal | staal of roestvrij staal |
doorlaat | DN 10-200 |
druktrap | PS 25, PS 40, PS 63 |
temperatuurbereik | -60°C tot +150°C |
aansluiting | stompgelaste uiteinden DIN, ANSI flensuiteinden DIN, ANSI soldeereinden schroefeinden |
overige | dekselverlenging lineair kogellager |
Stop Check Valve type RVA
Kleppen die automatisch worden vergrendeld door de stroomrichting om te keren.
Keerkleppen met een stijgende steel en een PTFE-ringafdichting op de steelstop, met regelende kegel.
Keerkleppen met een klemontwerp met of zonder ingebouwde demping of met ingebouwde demping en lineair taplager.
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.
Een verstandige aanvulling op uw koelsysteem. De ammoniakdroger verwijdert water uit de koelmiddelcyclus en is de perfecte aanvulling op uw ammoniakkoelsysteem, samen met filters en ontluchters.
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.