Taking a bulldozer as an example,the current limit problems of the multiway valve were analyzed.A twoway currentlimiting valve was designed for the problem.The two internal overflow throttle valves were connected in parallel,the inlet and bypass ports were crossed to ensure the desired priority flow in both directions.According to its principle and structure,a simulation model was set up.By changing the size of the orifice of the valve body,different throttling effect could be obtained.The flexibility and interchangeability of the limit valve can be improved,and the versatility of the multiway valve can be increased.