Raceway type spherical check valve uses rubber coated rolling ball as valve clack. Under the action of medium, it can roll up and down on the integral slide of the valve body, so as to open or close the valve. It has good sealing performance and can be closed soundlessly without water hammer. The valve body adopts a water inlet channel with large flow. The resistance is small, and the faucet loss is 50% less than that of the swing type, which can be installed horizontally or vertically. It can be used in cold water, hot water, industrial and domestic sewage pipe networks, and is more suitable for submersible sewage pumps. It can be installed at the water pump outlet to prevent backflow and water hammer from damaging the pump.