Double-leaf non-return valves for large nominal sizes and aggressive media.
The check valve series 2000 from KSB is a high-grade valve for industrial applications. With a dual-plate disc, compact design and high corrosion resistance it is suitable for water, steam and aggressive media in demanding plants.
The version decides the field of application: PN 16 in grey cast iron covers -5 °C to +200 °C, Class 150 in stainless steel 1.4408 covers -196 °C to +538 °C. The seal type follows the requirement – metal-elastomer achieves leakage rate A to EN 12266-1, the metal-to-metal version is tested to API 598.
| Feature | PN 16 | Class150 |
| Nominal pressure | PN 16 | PN 20 |
| Nominal size | DN 50 – DN 600 | DN 250 – DN 600 |
| Temperature range | -5°C to +200°C | -196°C to +538°C |
| material | EN-GJL-250 | Stainless steel 1.4408 (CF8M) |
| Gaskets | Metal-elastomer | Metal-metal or elastomer |
| Standards | DIN EN 558-1, | DIN EN 558-1, |
Our pipe production department supplies welded pipe segments, pipe assemblies and complete valve sections made of stainless steel – exactly to your specifications. Whether pressure pipes in accordance with the PED, reducers or complex assemblies with integrated non-return valves: We combine the highest manufacturing quality with standard-compliant design for industrial plants, energy and process systems.
Water, steam, aggressive and corrosive media.
Yes, with flow direction from bottom to top.
EN 12516, API 598, ASME B16.34, Pressure Equipment Directive 2014/68/EU.
Yes, for zone 1+21.
Between standard flanges, without support, without special tools.
Our insulations are more than just accessories – they perfectly complement valves and systems and increase efficiency, safety and adaptability.
Order and configure now.
We offer:
