Safety devices for protecting refrigeration systems from excess pressure
RVD Constant Pressure Valves
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
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GEA 洞察
GEA reports profitable growth for 2025 and expects accelerated revenue growth
GEA’s past fiscal year was one of significant growth and further profitability gains. In particular, the technology group substantially increased order intake, with all divisions contributing here. GEA also made progress in all Mission 30 strategic growth areas. In addition, GEA met key interim targets under its climate plan ahead of schedule. Major milestones in fiscal year 2025 were admission to the DAX index, the award of one of the largest contracts in the company’s history, and streamlining of the corporate structure.
