Overzicht
RVAK stopkeerkleppen
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.
Technische kenmerken
- Leverbaar in staal of roestvrij staal
- Keuze van het materiaal van de behuizing volgens de Duitse DIN EN12284, AD2000 Serie W
- Aandrijfmedia: koude pekel op basis van glycol EN 378 p. 1, bijv. NH3, R22, R134a en mengsels met koelvloeistof, neutrale, gasvormige en vloeibare media, koude pekel op basis van glycol
- Montagepositie: horizontaal, en verticaal voor stroomrichting omhoog
| RVAK stopkeerkleppen | |
| ontwerp | recht of haaks type |
| materiaal | staal of roestvrij staal |
| doorlaat | DN 10-150 |
| 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 RVAK
Downloads
Aanverwante producten
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