按流量连续性定理，这部分泄漏量也必须从主阀芯阻尼孔流来，即流经阻尼孔的流量由先导流量和泄漏量两部分构成，而阻尼孔面积和主阀弹簧腔油液压力未变（弹簧腔油液压力由已调好的调压弹簧预压缩量确定），为使通过阻尼孔的流量增加，必然引起主阀下腔油液压力的升高。当减压阀出口压力调定后，如果出口流量为零时，出口压力会因主阀芯配合过松或磨损过大而升高
台湾WILSHEN伟圣单向减压阀
RCG系列单向减压阀部分型号：
RCG-03-1-31 RCT-03-1-31
RCG-06-1-31 RCT-06-1-31
RCG-10-1-31 RCT-10-1-31
RCG-03-2-31 RCT-03-2-31
RCG-06-2-31 RCT-06-2-31
RCG-10-2-31 RCT-10-2-31
RCG-03-3-31 RCT-03-3-31
RCG-06-3-31 RCT-06-3-31
RCG-10-3-31 RCT-10-3-31
RCG-03-1-30 RCT-03-1-30
RCG-06-1-30 RCT-06-1-30
RCG-10-1-30 RCT-10-1-30
RCG-03-2-30 RCT-03-2-30
RCG-06-2-30 RCT-06-2-30
RCG-10-2-30 RCT-10-2-30
RCG-03-3-30 RCT-03-3-30
RCG-06-3-30 RCT-06-3-30
RCG-10-3-30 RCT-10-3-30 1322
台湾WILSHEN伟圣减压阀
RG系列减压阀部分型号：
RG-03-1-31 RT-03-1-31
RG-06-1-31 RT-06-1-31
RG-10-1-31 RT-10-1-31
RG-03-2-31 RT-03-2-31
RG-06-2-31 RT-06-2-31
RG-10-2-31 RT-10-2-31
RG-03-3-31 RT-03-3-31
RG-06-3-31 RT-06-3-31
RG-10-3-31 RT-10-3-31
RG-03-1-30 RT-03-1-30
RG-06-1-30 RT-06-1-30
RG-10-1-30 RT-10-1-30
RG-03-2-30 RT-03-2-30
RG-06-2-30 RT-06-2-30
RG-10-2-30 RT-10-2-30
RG-03-3-30 RT-03-3-30
RG-06-3-30 RT-06-3-30
RG-10-3-30 RT-10-3-30
台湾WILSHEN伟圣压力控制阀
HC型压力控制阀部分型号：
HCG-03-A-1 HCG-06-A-1 HCG-10-A-1
HCT-03-A-1 HCT-06-A-1 HCT-10-A-1
HCG-03-A-2 HCG-06-A-2 HCG-10-A-2
HCT-03-A-2 HCT-06-A-2 HCT-10-A-2
HCG-03-A-3 HCG-06-A-3 HCG-10-A-3
HCT-03-A-3 HCT-06-A-3 HCT-10-A-3
HCG-03-A-4 HCG-06-A-4 HCG-10-A-4
HCT-03-A-4 HCT-06-A-4 HCT-10-A-4
H型压力控制阀部分型号：
HG-03-A-4 HT-03-A-4
HG-06-A-4 HT-06-A-4
HG-10-A-4 HT-10-A-4
HG-03-A-1 HT-03-A-1
HG-06-A-1 HT-06-A-1
HG-10-A-1 HT-10-A-1
HG-03-A-2 HT-03-A-2
HG-06-A-2 HT-06-A-2
HG-10-A-2 HT-10-A-2
HG-03-A-3 HT-03-A-3
HG-06-A-3 HT-06-A-3
