Check valves are used to prevent undesired return flows in pipelines and ensure that gasses and liquids only flow in one direction. Specially designed check valves are required for cryogenic use as they need to withstand temperatures below freezing point.
Cryogenic check valves are available in sizes from DN10 to DN200 and secure pressures up to 50 bar, at operating temperatures of -196°C to +120°C. The check valves are manufactured in stainless steel and bronze.