(5)防止管路压力丢失过大致使恒功率变量泵输出流量达不到估计需求，恒功率变量泵的出口经单向阀和换向阀等与液压缸相连，液压缸的回油也须经相应的阀流到油箱。假如有的阀标准偏小，形成压力丢失偏大，则会使泵的输出流量过小，达不到液压缸疾速动作的需求。(5)防止管路压力丢失过大致使恒功率变量泵输出流量达不到估计需求，恒功率变量泵的出口经单向阀和换向阀等与液压缸相连，液压缸的回油也须经相应的阀流到油箱。假如有的阀标准偏小，形成压力丢失偏大，则会使泵的输出流量过小，达不到液压缸疾速动作的需求。9510390066AZ-P-N-12-036-RQC12MA9510390067AZ-P-N-12-020-LQC12MA9510390068AZ-P-N-12-022-LQC12MA9510390069AZ-P-N-12-025-LQC12MA9510390070AZ-P-N-12-028-LQC12MA9510390071AZ-P-N-12-032-LQC12MA9510390072AZ-P-N-12-036-LQC12MA9510390073AZ-P-N-12-020-RQR12MB9510390074AZ-P-N-12-022-RQR12MB9510390075AZ-P-N-12-025-RQR12MB9510390076AZ-P-N-12-028-RQR12MB9510390077AZ-P-N-12-032-RQR12MB9510390078AZ-P-N-12-036-RQR12MB9510390079AZ-P-N-12-020-LQR12MB9510390080AZ-P-N-12-022-LQR12MB9510390081AZ-P-N-12-025-LQR12MB9510390082AZ-P-N-12-028-LQR12MB9510390083AZ-P-N-12-032-LQR12MB9510390084AZ-P-N-12-036-LQR12MB9510390085AZ-P-NFF-11-020/019/019-RDC12MB-S00149510390086AZ-P-N-12-020-RPR12MA9510390087AZ-P-N-12-022-RPR12MA)