ASTM A216 WCB Swing Check Valves are a specific type of check valve designed to regulate the flow of fluid in a single direction within a pipeline. Made from ASTM A216 WCB material, which stands for "Water Cooled Blast Furnace" steel, these valves feature a hinged disc mechanism that opens to permit flow and closes to prevent backflow. Characterized by their low carbon content ranging from approximately 0.25% to 0.35%, these valves offer a balance of strength and ductility, making them suitable for various industrial applications where reliable one-way fluid flow is required. They safeguard equipment such as pumps by eliminating the risk of reverse flow, thus ensuring the smooth operation of the system.