为了研究三位换向滑阀对中性对其压力损失的影响 ,以 34D- 10 BO型三位换向滑阀为试件 ,对不同对中误差下试件的压力损失进行测量 .结果表明 :对中误差增大 ,试件压力损失增加 ,对试验结果与理论计算进行了比较 ,据此提出了在元件生产过程中应保证加工精度 ,减少对中误差 ,以提高液压元件成批生产合格率 In order to study the influence of three-way reversing spool valve on the pressure loss of neutral, the pressure loss of the test specimen under different centering errors was measured by using the 34D-10 BO three-way reversing spool as the test specimen. : The center error increases, the specimen pressure loss increases, the test results and theoretical calculations were compared, accordingly proposed in the production process of components should ensure that the machining accuracy and reduce the error in order to improve the mass production of hydraulic components qualified rate