DN200 Check Valve

A DN200 Check Valve, approximately 8 inches in diameter, is an automatic valve used in pipelines to ensure unidirectional flow of fluids. It opens and closes in response to fluid movement, allowing flow in one direction while preventing backflow. Types include swing check valves, which pivot on a hinge to open against a seal, and lift check valves, which lift from the seat to permit flow and settle to block reverse flow. These valves are critical for protecting equipment from damage caused by reverse flow in various industrial and municipal applications.