Ycbd series multi way directional valve of excavator is a combination valve composed of one-way valve, safety valve, oil inlet body, oil return body and multiple directional valve pieces. It is mainly manual directional valve. It has the characteristics of compact structure, high working pressure, excellent performance and reliable operation. The oil circuit adopts parallel oil circuit. There are many kinds of slide valve functions for the system. The valve stem reset mode adopts manual reversing, spring automatic reset or steel ball positioning. A one-way valve is set inside the valve plate to prevent oil backflow. The oil inlet valve plate is equipped with an overflow valve to control the pressure of the whole system. According to the needs of users, overload valves can be installed at both ends of the reversing valve plate to meet the load needs of different actuators. The valve is widely used in the hydraulic system of construction machinery such as excavators, forklifts and environmental protection vehicles.