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
Pressure Valve type RVD
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 |
Downloads
Service Products
PR-OLEO® Premium-Quality Ammonia Refrigeration Oils
PR-OLEO® ammonia oils are the natural choice to optimize industrial cooling and heating applications operating with reciprocating or screw compressors.
GEA Ammonia Dryer
The GEA Ammonia Dryer removes water from the refrigerant cycle and makes the perfect addition to ammonia refrigeration systems along with filters and purgers.
GEA Service Kits for reciprocating compressors
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.
GEA Insights
Modern herd management: a smarter way to farm
In a dairy herd, every cow has her own story – and modern herd management tools help tell it. By tracking health, habits and needs, these smart systems let farmers care better, work smarter and keep milk flowing. It's the secret behind happy herds and successful, more sustainable dairy farming.
Feeding the future: The power of freeze-drying innovation
Waste reduction is important to us at GEA, and by harnessing the power of freeze drying technology, we can transform surplus food into valuable, long-lasting products – helping to reduce waste, extend shelf life and build a more resilient food supply for generations to come.
