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GESTRA RK 29A GESTRA Disco non-return valve DN50 fits between flanges EN 1092 fits between
GESTRA RK 29A Disco Check Valve DN50 is a high-performance check valve widely used in a broad range of industrial applications to ensure that fluids such as liquids, gases, and vapors flow in only one direction. The DN50 size is suitable for higher flow capacities and larger pipeline diameters.
Key areas of application include:
- Steam and Condensate Systems: Prevents the backflow of condensed water (condensate) in steam lines exiting steam boilers or in condensate return systems. This is critical for system protection against water hammer and for the efficient operation of steam traps.
- Hot Water and Heating Systems: In large-scale heating systems, boilers, heat exchangers, and main distribution lines, it prevents flow reversal, thereby increasing energy efficiency and ensuring proper equipment operation.
- Compressed Air and Gas Systems: In industrial compressor stations, large gas storage units, or gas distribution networks, it prevents gas backflow, ensuring safe and continuous system operation and efficiency.
- Process Industry: Plays a critical role in sectors such as chemical, petrochemical, food and beverage, pharmaceutical, and power plants, guaranteeing the correct directional flow of various aggressive or high-temperature fluids and preventing cross-contamination.
- Pump Stations: Installed in the discharge lines of larger industrial pumps, it prevents fluid from returning when the pump stops or malfunctions, protecting the pump from severe damage.
- Cooling Towers and Water Treatment Plants: Controls the direction of flow in large water circuits and filtration systems, ensuring efficiency and the continuity of treatment processes.
GESTRA RK 29A Disco Check Valve DN50 is a spring-loaded, disc-type (Disco) wafer valve. The term "Disco" emphasizes the valve's compact and lightweight design, which allows it to be easily installed by being clamped between existing flanges in the pipeline (wafer type). The DN50 nominal diameter indicates that this valve is designed for 50 mm pipelines and is suitable for higher flow rates and capacities.
A specially designed internal spring ensures that the valve closes quickly and reliably if the fluid begins to move in the reverse direction. Thanks to this spring-loaded mechanism, the RK 29A can operate flawlessly in any mounting position (horizontal, vertical, or angled), offering great flexibility in installation. The valve requires a very low opening pressure (typically around 10 mbar), which minimizes pressure loss in the system and, consequently, energy consumption.
The valve's compatibility with EN 1092 flanges means it can be seamlessly integrated with flanges manufactured according to European standards (e.g., various pressure classes from PN 63 to PN 400). This provides high compatibility and convenience, especially in international engineering projects or existing installations adhering to EN standards.
The RK 29A is typically manufactured from high-quality stainless steel (e.g., 1.4571 / X6CrNiMoTi17-12-2), which makes it extremely resistant to corrosion, high temperatures, and pressure. This material choice makes it ideal for demanding media such as steam, aggressive gases, and liquids. The valve features metal-to-metal seating, ensuring a long-lasting and reliable seal. Furthermore, it offers low maintenance requirements and a long service life.