德国力士乐REXROTH叠加式溢流阀ZDB/Z2DB型是叠加式先导溢流阀，用于限制
系统压力。有六种控制形式和四个压力等级。系统压力通过调节装置⑷调节。2、该阀由阀体⑺和一个或两个插装式先导溢流阀组成。
3、静止时溢流阀呈关闭状态。A口的压力作用在阀芯⑴上，与此同时
压力通过节流孔⑵作用在阀芯⑴的弹簧加载侧，经过节流孔⑶作用在先
导阀⑹上。当A口的压力增加直到超过弹簧⑸调定的压力时，阀芯⑹开
启，压力油从阀芯⑴的弹簧腔，再通过阻尼孔⑶通道⑻流到T口

R900507526 ZDB6VA1-4X/100V  R900507459 ZDB6VP1-4X/50
R900503434 ZDB6VP2-4X/200SO52 R900503154 ZDB6VP7-4X/200V
R900501749 ZDB6VP7-4X/50V   R900501299 ZDB6VP7-4X/100V
R900490094 ZDB6VP3-4X/50V   R900460711 ZDB6VP3-4X/100
R900460338 ZDB6VA3-4X/315   R900449008 ZDB6VP1-4X/50V
R900447152 ZDB6VP1-4X/200  R900445935 ZDB6VP1-4X/315
R900444647 ZDB6VP2-4X/200SO2 R900440160 ZDB6VB3-4X/50V
R900438967 ZDB6VA3-4X/200 R901132023 ZDB6VA2-4X/315-220V
R901111226 ZDB6VP2-4X/200-130V R901101916 ZDB6VP2-4X/315V/60
R901087335 ZDB6VB2-4X/315-315 R900978972 ZDB6VB2-4X/100SO2
R900967507 ZDB6VB1-4X/100 R900967506 ZDB6VB1-4X/50
R900967505 ZDB6VA1-4X/50 R900964130 ZDB6VB2-4X/200SO2
R900961530 ZDB6VP2-4X/200-160V R900949360 ZDB6VP2-4X/100SO2
R900947382 ZDB6VB2-4X/315SO2 R900947381 ZDB6VB2-4X/350SO2
R900947270 ZDB6VB2-4X/315VSO2 R900931013 ZDB6VA2-4X/315SO2
R900909480 ZDB6VB1-4X/315 R900907940 ZDB6VB7-4X/315V
R900598833 Z2DB10VD3-4X/100 R900587771 Z2DB10VD3-4X/315V
R900583299 Z2DB10VC3-4X/315V R900583042 Z2DB10VD7-4X/315V
R900580734 Z2DB10VD7-4X/200 R900552548 Z2DB10VC1-4X/50V
R900537026 Z2DB10VC2-4X/315VSO30 R900523756 Z2DB10VD1-4X/315V