(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。A4VS0180-PR-3X/R-PPB13N00A4V90HD10L0C2020A4VG125HDDT1/32R-N2F-02F011SA4VS0250DFR/30R-PPB13N00A4VG92DA2D6/31L-P2F02F301SA4VSO40DFR/30R-PPB12N00A4VSO250DFR/30R-PPB13N00A4VSO125DR/10R-PPB13N00***G250HWD1/32R-N2D10F69A4VSH71MA/10LPPB02N000NA4VS0180-DR-3X/R-PPB13N00A4VS0125DR/22R-PPB12N00A4VS0125DR/10RPPB13N00A4VS071DR/10RPPB13N00A4VS040DR/10RPPB13N00A4VG56EP2DT1/32R-NAF02F011SA4VSO250DR/22R-VPB13NOOA4VS0100DR/22R-PPB13N00A4VG125HDDT1/32R-N2F02F011SA4VTG90HW/32L)