Safety devices for protecting refrigeration systems from excess pressure
RVD constante-drukkleppen
GEA constant pressure valves are autonomously working regulating devices (constant pressure function) within the oil management systems of screw compressor packages, to ensure defined minimum differential pressure (e. g. 3 bar, 4 bar etc.) or oil injection pressure during the start-up phase and running of the screw compressor. The constant pressure valve is equipped with a back-pressure compensation sealing element. The valve is opened by the pressure of the operating medium below the valve disc and depends on the set opening pressure of the valve (spring-loaded). The set pressure is determined by the customer and is set by the manufacturer
Technical Features
- Available in steel
- Selection of body material as per German DIN EN12284, AD2000 Series W
- Working mediums: refrigerants as per EN 378 p. 1, e. g. NH3, R134a, R290 (propane), R507 and blends with refrigerator oil; neutral, gaseous and liquid mediums; glycol-based cold brine
- Installation position: in any position
| RVD Pressurizers | |
| material | steel or stainless steel |
| nominal size | DN 40-150 |
| nominal pressure level | PS 25, PS 40 |
| temperature range | -60 °C to +150 °C |
| temperature range for
HT Valve Series | -10 °C to +200 °C |
| connection | butt welding and flanged ends as per DIN and ANSI |
| set pressure range | 1-9 bar |
Pressure Valve type RVD
Downloads
Serviceproducten
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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.
PR-OLEO® Premium-Quality Ammonia Refrigeration Oils
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.
GEA Service Kits voor zuigercompressoren
Welkom in de wereld van eenvoud met GEA Service Kits voor zuigercompressoren. Onze missie is duidelijk; uw ervaring met originele reserveonderdelen naadloos en uw activiteiten vlotter dan ooit maken. "Rustig aan, gebruik een kit" is niet zomaar een slogan; het is een belofte die we waarmaken.
