1、节能，经济型泵。
2、内装高精度压力补偿结构。
3、油环具有弹力，且偏芯、随压力上升而自动移到中心，使排除量为零。
4、可以省去回路中的溢流阀及卸荷阀。
5、与压力成比例的输入可以防止油
部分型号：
vdr-1a-1a2-22 vdr-1a-1a3-22 vdr-1a-1a4-22 vdr-1a-1a5-22
vdr-1a-2a2-22 vdr-1a-2a3-22 vdr-1b-1a2-22 vdr-1b-1a3-22
vdr-1b-1a4-22 vdr-1b-1a5-22 vdr-1b-2a2-22 vdr-1b-2a3-22
vdr-11a-1a2-1a2-22 vdr-11a-1a2-1a3-22 vdr-11a-1a3-1a3-22
vdr-11a-2a2-2a2-22 vdr-11a-2a2-2a3-22 vdr-11a-2a3-2a3-22
vdr-11b-1a2-1a2-22 vdr-11b-1a2-1a3-22 vdr-11b-1a3-1a3-22
vdr-11b-2a2-2a2-22 vdr-11b-2a2-2a3-22 vdr-11b-2a3-2a3-22
vdc-1b-1a4-20,vdc-1b-1a5-20 vdc-1b-2a2-20,vdc-1b-2a3-20
vdc-2b-1a2-20,vdc-2b-1a3-20 vdc-2b-1a4-20,vdc-2b-1a5-20
vdc-2b-2a2-20,vdc-2b-2a3-20 vdc-3b-1a2-20,vdc-3b-1a3-20
vdc-3b-1a4-20,vdc-3b-1a5-20 vdc-1a-1a2-20,vdc-1a-1a3-20
vdc-1a-1a4-20,vdc-1a-1a5-20 vdc-1a-2a2-20,vdc-1a-2a3-20
vdc-2a-1a2-20,vdc-2a-1a3-20 vdc-2a-1a4-20,vdc-2a-1a5-20
vdc-2a-2a2-20,vdc-2a-2a3-20 vdc-3a-1a2-20,vdc-3a-1a3-20
vdc-3a-1a4-20,vdc-3a-1a5-20 vdr-1b-1a3-13,vdr-1b-1a2-13
vdr-2b-1a3-13,vdr-1b-1a1-13 vdr-2b-1a2-13,vdr-2b-1a1-13
vdr-1a-1a1-13,vdr-1a-1a2-13vdr-1a-1a3-13,vdr-2a-1a1-13
vdr-2a-1a2-13,vdr-2a-1a3-13 vdr-1b-1a5-22,vdr-1b-1a4-22
vdr-1b-1a3-22,vdr-1b-1a2-22 vdr-1b-2a2-22,vdr-1b-2a3-22
vdr-1a-1a2-22,vdr-1a-1a3-22 vdr-1a-1a4-22,vdr-1a-1a5-22
vdr-1a-2a2-22,vdr-1a-2a3-22