Check valves are used to...

Check valves are specifically designed to permit flow in only one direction while preventing backflow. This is crucial in various applications such as wastewater treatment or water supply systems, where backflow could lead to contamination or operational issues. The mechanism of a check valve typically involves a disc or flap that opens when fluid flows in the intended direction but closes against the flow to prevent reverse flow. This functionality is vital in maintaining system integrity and ensuring that fluids move efficiently through piping systems, thus supporting the operational safety and reliability of the whole infrastructure.