DR…50B型50系列压力控制阀是先导式减压阀，用于系统减压。

这种减压阀由主阀体及主阀芯和带压力设定件的先导阀构成。

停止时阀开启，即油从油路B经过主阀芯流向油路A，A腔压力作用在主阀芯底部。同时来自油路A的压力经主阀芯节流孔并通过孔，作用在先导阀的球形阀芯上。根据弹簧的设定值，在球形阀芯前、油路和弹簧腔建立起压力，控制阀芯在开启位置。油可以**地从B流向A，直到A腔压力超过弹簧的设定压力，阀芯打开。控制阀芯移动到关闭位置与A腔压力与弹簧到达平衡时，就打到了要求的减圧圧力。

华德6.jpg华德3.jpg华德5.jpg

控制油总是有弹簧腔经油口外泄油。

单向阀用了使油流从油路A**的流回到油路B。
DR20-4-50B/200Y北京华德先导式减压阀质量优
压力表接口用来连接压力表以检测A口二次压力。

	通径	管式
		通径	公制	英制
		8	M18x1.5	G3/8"
10	10	10	M22x1.5	G1/2"
		16	M27x2	G3/4"
20	20	20	M33X2	G1"
		25	M42x2	G1 1 /4"
32	30	30	M48x2	G11 /2"

压力等级（MPa）	30	5X
5		5
10	10	10
20		20
31.5		31.5
35	35	35

通经	（8）10	（15）20	（25）30
流量(L/min.)	80	200	300
工作压力（MPa）	31.5
压力（MPa）	31.5
出口压力（MPa）	0.3~31.5	1-31.5
背压Y口（MPa）	31.5
介质温度(℃)	-20~70
过滤精度(μ)	25

部分型号：

DR5DP2-10B/25XYM
DR5DP2-10B/75XYM
DR5DP2-10B/150XYM
DR5DP2-10B/210XYM
DR5DP2-10B/315XYM
FDR5DP3-10B/25XYM
FDR5DP3-10B/75XYM
FDR5DP3-10B/150XYM
FDR5DP3-10B/210XYM
FDR5DP3-10B/315XYM
DR5DP3-10B/25XYM
DR5DP3-10B/75XYM
DR5DP3-10B/150XYM
DR5DP3-10B/210XYM
DR5DP3-10B/315XYM
FDR5DP1-10B/25Y
FDR5DP1-10B/75Y
FDR5DP1-10B/150Y
FDR5DP1-10B/210Y
FDR5DP1-10B/315Y
DR5DP1-10B/25Y
DR5DP1-10B/75Y
DR5DP1-10B/150Y
DR5DP1-10B/210Y
DR5DP1-10B/315Y
FDR5DP2-10B/25Y
FDR5DP2-10B/75Y
FDR5DP2-10B/150Y
FDR5DP2-10B/210Y
FDR5DP2-10B/315Y
DR5DP2-10B/25Y
DR5DP2-10B/75Y
DR5DP2-10B/150Y
DR5DP2-10B/210Y
DR5DP2-10B/315Y
FDR5DP3-10B/25Y
FDR5DP3-10B/75Y
FDR5DP3-10B/150Y
FDR5DP3-10B/210Y
FDR5DP3-10B/315Y
DR5DP3-10B/25Y
DR5DP3-10B/75Y
DR5DP3-10B/150Y
DR5DP3-10B/210Y
DR5DP3-10B/315Y
FDR5DP1-10B/25XY
FDR5DP1-10B/75XY
FDR5DP1-10B/150XY
FDR5DP1-10B/210XY
FDR5DP1-10B/315XY
DR5DP1-10B/25XY
DR5DP1-10B/75XY
DR5DP1-10B/150XY
DR5DP1-10B/210XY
DR5DP1-10B/315XY
FDR5DP2-10B/25XY
FDR5DP2-10B/75XY
FDR5DP2-10B/150XY
FDR5DP2-10B/210XY
FDR5DP2-10B/315XY
DR5DP2-10B/25XY
DR5DP2-10B/75XY
DR5DP2-10B/150XY
DR5DP2-10B/210XY
DR5DP2-10B/315XY
FDR5DP3-10B/25XY
FDR5DP3-10B/75XY
FDR5DP3-10B/150XY
FDR5DP3-10B/210XY
FDR5DP3-10B/315XY
DR5DP3-10B/25XY
DR5DP3-10B/75XY
DR5DP3-10B/150XY
DR5DP3-10B/210XY
DR5DP3-10B/315XY
DR6DP1-50B/25YM
DR6DP1-50B/75YM
DR6DP1-50B/150YM
DR6DP1-50B/210YM
DR6DP2-50B/25YM
DR6DP2-50B/75YM
DR6DP2-50B/150YM
DR6DP2-50B/210YM
DR6DP3-50B/25YM
DR6DP3-50B/75YM
DR6DP3-50B/150YM
DR6DP3-50B/210YM
DR6DP7-50B/25YM
DR6DP7-50B/75YM
DR6DP7-50B/150YM
DR6DP7-50B/210YM
DR6DP1-50B/25Y
DR6DP1-50B/75Y
DR6DP1-50B/150Y
DR6DP1-50B/210Y
DR6DP2-50B/25Y
DR6DP2-50B/75Y
DR6DP2-50B/150Y
DR6DP2-50B/210Y
DR6DP3-50B/25Y
DR6DP3-50B/75Y
DR6DP3-50B/150Y
DR6DP3-50B/210Y
DR6DP7-50B/25Y
DR6DP7-50B/75Y
DR6DP7-50B/150Y
DR6DP7-50B/210Y
DR10DP1-40B/25YM
DR10DP1-40B/75YM
DR10DP1-40B/150YM
DR10DP1-40B/210YM
DR10DP2-40B/25YM
DR10DP2-40B/75YM
DR10DP2-40B/150YM
DR10DP2-40B/210YM
DR10DP3-40B/25YM
DR10DP3-40B/75YM
DR10DP3-40B/150YM
DR10DP3-40B/210YM
DR10DP7-40B/25YM
DR10DP7-40B/75YM
DR10DP7-40B/150YM
DR10DP7-40B/210YM
DR10DP1-40B/25Y
DR10DP1-40B/75Y
DR10DP1-40B/150Y
DR10DP1-40B/210Y
DR10DP2-40B/25Y
DR10DP2-40B/75Y
DR10DP2-40B/150Y
DR10DP2-40B/210Y

DR20-4-50B/200Y北京华德先导式减压阀质量优
DR10DP3-40B/25Y
DR10DP3-40B/75Y
DR10DP3-40B/150Y
DR10DP3-40B/210Y
DR10DP7-40B/25Y
DR10DP7-40B/75Y
DR10DP7-40B/150Y
DR10DP7-40B/210Y
DR10G-1-30B/100YM
DR15G-1-30B/100YM
DR20G-1-30B/100YM
DR25G-1-30B/100YM
DR30G-1-30B/100YM
DR10-1-30B/100YM
DR20-1-30B/100YM
DR30-1-30B/100YM
DRC10G-1-30B/100YM
DRC15G-1-30B/100YM
DRC20G-1-30B/100YM
DRC25G-1-30B/100YM
DRC30G-1-30B/100YM
DRC10-1-30B/100YM
DRC20-1-30B/100YM
DRC30-1-30B/100YM
DR10G-2-30B/100YM
DR15G-2-30B/100YM
DR20G-2-30B/100YM
DR25G-2-30B/100YM
DR30G-2-30B/100YM
DR10-2-30B/100YM
DR20-2-30B/100YM
DR30-2-30B/100YM
DRC10G-2-30B/100YM
DRC15G-2-30B/100YM
DRC20G-2-30B/100YM
DRC25G-2-30B/100YM
DRC30G-2-30B/100YM
DRC10-2-30B/100YM
DRC20-2-30B/100YM
DRC30-2-30B/100YM
DR10G-3-30B/100YM
DR15G-3-30B/100YM
DR20G-3-30B/100YM
DR25G-3-30B/100YM
DR30G-3-30B/100YM
DR10-3-30B/100YM
DR20-3-30B/100YM
DR30-3-30B/100YM
DRC10G-3-30B/100YM
DRC15G-3-30B/100YM
DRC20G-3-30B/100YM
DRC25G-3-30B/100YM
DRC30G-3-30B/100YM
DRC10-3-30B/100YM
DRC20-3-30B/100YM
DRC30-3-30B/100YM
DR10G-1-30B/315YM
DR15G-1-30B/315YM
DR20G-1-30B/315YM
DR25G-1-30B/315YM
DR30G-1-30B/315YM
DR10-1-30B/315YM
DR20-1-30B/315YM
DR30-1-30B/315YM
DRC10G-1-30B/315YM
DRC15G-1-30B/315YM
DRC20G-1-30B/315YM
DRC25G-1-30B/315YM
DRC30G-1-30B/315YM
DRC10-1-30B/315YM
DRC20-1-30B/315YM
DRC30-1-30B/315YM
DR10G-2-30B/315YM
DR15G-2-30B/315YM
DR20G-2-30B/315YM
DR25G-2-30B/315YM
DR30G-2-30B/315YM
DR10-2-30B/315YM
DR20-2-30B/315YM
DR30-2-30B/315YM
DRC10G-2-30B/315YM
DRC15G-2-30B/315YM
DRC20G-2-30B/315YM
DRC25G-2-30B/315YM
DRC30G-2-30B/315YM
DRC10-2-30B/315YM
DRC20-2-30B/315YM
DRC30-2-30B/315YM
DR10G-3-30B/315YM
DR15G-3-30B/315YM
DR20G-3-30B/315YM
DR25G-3-30B/315YM
DR30G-3-30B/315YM
DR10-3-30B/315YM
DR20-3-30B/315YM
DR30-3-30B/315YM
DRC10G-3-30B/315YM
DRC15G-3-30B/315YM
DRC20G-3-30B/315YM
DRC25G-3-30B/315YM
DRC30G-3-30B/315YM
DRC10-3-30B/315YM
DRC20-3-30B/315YM
DRC30-3-30B/315YM
DR10G-1-30B/100Y
DR15G-1-30B/100Y
DR20G-1-30B/100Y
DR25G-1-30B/100Y
DR30G-1-30B/100Y
DR10-1-30B/100Y
DR20-1-30B/100Y
DR30-1-30B/100Y
DRC10G-1-30B/100Y
DRC15G-1-30B/100Y
DRC20G-1-30B/100Y
DRC25G-1-30B/100Y
DRC30G-1-30B/100Y
DRC10-1-30B/100Y
DRC20-1-30B/100Y
DRC30-1-30B/100Y
DR10G-2-30B/100Y
DR15G-2-30B/100Y
DR20G-2-30B/100Y
DR25G-2-30B/100Y
DR30G-2-30B/100Y
DR10-2-30B/100Y
DR20-2-30B/100Y
DR30-2-30B/100Y
DRC10G-2-30B/100Y
DRC15G-2-30B/100Y
DRC20G-2-30B/100Y
DRC25G-2-30B/100Y
DRC30G-2-30B/100Y
DRC10-2-30B/100Y
DRC20-2-30B/100Y
DRC30-2-30B/100Y
DR10G-3-30B/100Y
DR15G-3-30B/100Y
DR20G-3-30B/100Y
DR25G-3-30B/100Y
DR30G-3-30B/100Y
DR10-3-30B/100Y
DR20-3-30B/100Y
DR30-3-30B/100Y
DRC10G-3-30B/100Y
DRC15G-3-30B/100Y
DRC20G-3-30B/100Y
DRC25G-3-30B/100Y
DRC30G-3-30B/100Y
DRC10-3-30B/100Y
DRC20-3-30B/100Y
DRC30-3-30B/100Y
DR10G-1-30B/315Y
DR15G-1-30B/315Y
DR20G-1-30B/315Y
DR25G-1-30B/315Y
DR30G-1-30B/315Y
DR10-1-30B/315Y
DR20-1-30B/315Y
DR30-1-30B/315Y
DRC10G-1-30B/315Y
DRC15G-1-30B/315Y
DRC20G-1-30B/315Y
DRC25G-1-30B/315Y
DRC30G-1-30B/315Y
DRC10-1-30B/315Y
DRC20-1-30B/315Y
DRC30-1-30B/315Y
DR10G-2-30B/315Y
DR15G-2-30B/315Y
DR20G-2-30B/315Y
DR25G-2-30B/315Y
DR30G-2-30B/315Y
DR10-2-30B/315Y
DR20-2-30B/315Y
DR30-2-30B/315Y
DRC10G-2-30B/315Y
DRC15G-2-30B/315Y
DRC20G-2-30B/315Y
DRC25G-2-30B/315Y
DRC30G-2-30B/315Y
DRC10-2-30B/315Y
DRC20-2-30B/315Y
DRC30-2-30B/315Y
DR10G-3-30B/315Y
DR15G-3-30B/315Y
DR20G-3-30B/315Y
DR25G-3-30B/315Y
DR30G-3-30B/315Y
DR10-3-30B/315Y
DR20-3-30B/315Y
DR30-3-30B/315Y
DRC10G-3-30B/315Y
DRC15G-3-30B/315Y
DRC20G-3-30B/315Y
DRC25G-3-30B/315Y
DRC30G-3-30B/315Y
DRC10-3-30B/315Y
DRC20-3-30B/315Y
DRC30-3-30B/315Y
DR10G-4-50B/50YM
DR15G-4-50B/50YM
DR20G-4-50B/50YM
DR25G-4-50B/50YM
DR10-4-50B/50YM
DR20-4-50B/50YM
DRC10G-4-50B/50YM
DRC15G-4-50B/50YM
DRC20G-4-50B/50YM
DRC25G-4-50B/50YM
DRC10-4-50B/50YM
DRC20-4-50B/50YM
DR10G-5-50B/50YM
DR15G-5-50B/50YM
DR20G-5-50B/50YM
DR25G-5-50B/50YM
DR10-5-50B/50YM
DR20-5-50B/50YM
DRC10G-5-50B/50YM
DRC15G-5-50B/50YM
DRC20G-5-50B/50YM
DRC25G-5-50B/50YM
DRC10-5-50B/50YM
DRC20-5-50B/50YM
DR10G-6-50B/50YM
DR15G-6-50B/50YM
DR20G-6-50B/50YM
DR25G-6-50B/50YM
DR10-6-50B/50YM
DR20-6-50B/50YM
DRC10G-6-50B/50YM
DRC15G-6-50B/50YM
DRC20G-6-50B/50YM
DRC25G-6-50B/50YM
DRC10-6-50B/50YM
DRC20-6-50B/50YM
DR10G-7-50B/50YM
DR15G-7-50B/50YM
DR20G-7-50B/50YM
DR25G-7-50B/50YM
DR10-7-50B/50YM
DR20-7-50B/50YM
DRC10G-7-50B/50YM
DRC15G-7-50B/50YM

DB10-1-30,DB20-1-30,DB30-1-30,DB10-2-30,

ZDB6VB-1-40/100,ZDB6VB-2-40/100
ZDB6VB-3-40/100,ZDB6VB-7-40/100
ZDB6VA-1-40/200,ZDB6VA-2-40/200
ZDB6VA-3-40/200,ZDB6VA-7-40/200

ZDB6VP-1-40/200,ZDB6VP-2-40/200
ZDB6VP-3-40/200,ZDB6VP-7-40/200
ZDB6VB-1-40/200,ZDB6VB-2-40/200
ZDR10DP3-40/150YM,ZDR10DB2-40/25Y,ZDR10DB2-40/75YM,
ZDR10DB2-40/25YM,ZDR10DB2-40/75Y,ZDR10DB2-40/150YM,
ZDR10DB2-40/150Y,ZDR10DB2-40/210YM,ZDR10DB2-40/210Y,
ZDR10DP3-40/75Y,ZDR10DB3-40/25YM,ZDR10DB3-40/25Y,
ZDR10DB3-40/75YM,ZDR10DB3-40/75Y,ZDR10DB3-40/150YM,
ZDR10DB3-40/150Y,ZDR10DB3-40/210YM,ZDR10DB3-40/210Y,
ZDR10DP3-40/75YM,ZDR10DP1-40/25YM,ZDR10DP1-40/25Y,
DR20-1-30/315Y,DR20-1-30/100YM,DR20-1-30/315YM
DR20-2-30/100Y,DR20-2-30/315Y,DR20-2-30/100YM
DR20-2-30/315YM,DR30-1-30/100Y,DR30-1-30/315Y
DR30-1-30/100YM,DR30-1-30/315YM,DR30-2-30/100Y

DRC20G-7-50B/50YM
DRC25G-7-50B/50YM
DRC10-7-50B/50YM
DRC20-7-50B/50YM
DR10G-4-50B/100YM
DR15G-4-50B/100YM
DR20G-4-50B/100YM
DR25G-4-50B/100YM
DR10-4-50B/100YM
DR20-4-50B/100YM
DRC10G-4-50B/100YM
DRC15G-4-50B/100YM
DRC20G-4-50B/100YM
DRC25G-4-50B/100YM
DRC10-4-50B/100YM
DRC20-4-50B/100YM
DR10G-5-50B/100YM
DR15G-5-50B/100YM
DR20G-5-50B/100YM
DR25G-5-50B/100YM
DR10-5-50B/100YM
DR20-5-50B/100YM
DRC10G-5-50B/100YM
DRC15G-5-50B/100YM
DRC20G-5-50B/100YM
DRC25G-5-50B/100YM
DRC10-5-50B/100YM
DRC20-5-50B/100YM
DR10G-6-50B/100YM
DR15G-6-50B/100YM
DR20G-6-50B/100YM
DR25G-6-50B/100YM
DR10-6-50B/100YM
DR20-6-50B/100YM
DRC10G-6-50B/100YM
DRC15G-6-50B/100YM
DRC20G-6-50B/100YM
DRC25G-6-50B/100YM
DRC10-6-50B/100YM
DRC20-6-50B/100YM
DR10G-7-50B/100YM
DR15G-7-50B/100YM
DR20G-7-50B/100YM
DR25G-7-50B/100YM
DR10-7-50B/100YM
DR20-7-50B/100YM
DRC10G-7-50B/100YM
DRC15G-7-50B/100YM
DRC20G-7-50B/100YM
DRC25G-7-50B/100YM
DRC10-7-50B/100YM
DRC20-7-50B/100YM
DR10G-4-50B/200YM
DR15G-4-50B/200YM
DR20G-4-50B/200YM
DR25G-4-50B/200YM
DR10-4-50B/200YM
DR20-4-50B/200YM
DRC10G-4-50B/200YM
DRC15G-4-50B/200YM
DRC20G-4-50B/200YM
DRC25G-4-50B/200YM
DRC10-4-50B/200YM
DRC20-4-50B/200YM
DR10G-5-50B/200YM
DR15G-5-50B/200YM
DR20G-5-50B/200YM
DR25G-5-50B/200YM
DR10-5-50B/200YM
DR20-5-50B/200YM
DRC10G-5-50B/200YM
DRC15G-5-50B/200YM
DRC20G-5-50B/200YM
DRC25G-5-50B/200YM
DRC10-5-50B/200YM
DRC20-5-50B/200YM
DR10G-6-50B/200YM
DR15G-6-50B/200YM
DR20G-6-50B/200YM
DR25G-6-50B/200YM
DR10-6-50B/200YM
DR20-6-50B/200YM
DRC10G-6-50B/200YM
DRC15G-6-50B/200YM
DRC20G-6-50B/200YM
DRC25G-6-50B/200YM
DRC10-6-50B/200YM
DRC20-6-50B/200YM
DR10G-7-50B/200YM
DR15G-7-50B/200YM
DR20G-7-50B/200YM
DR25G-7-50B/200YM
DR10-7-50B/200YM
DR20-7-50B/200YM
DRC10G-7-50B/200YM
DRC15G-7-50B/200YM
DRC20G-7-50B/200YM
DRC25G-7-50B/200YM
DRC10-7-50B/200YM
DRC20-7-50B/200YM
DR10G-4-50B/315YM
DR15G-4-50B/315YM
DR20G-4-50B/315YM
DR25G-4-50B/315YM
DR10-4-50B/315YM
DR20-4-50B/315YM
DRC10G-4-50B/315YM
DRC15G-4-50B/315YM
DRC20G-4-50B/315YM
DRC25G-4-50B/315YM
DRC10-4-50B/315YM
DRC20-4-50B/315YM
DR10G-5-50B/315YM
DR15G-5-50B/315YM
DR20G-5-50B/315YM
DR25G-5-50B/315YM
DR10-5-50B/315YM
DR20-5-50B/315YM
DRC10G-5-50B/315YM
DRC15G-5-50B/315YM
DRC20G-5-50B/315YM
DRC25G-5-50B/315YM
DRC10-5-50B/315YM
DRC20-5-50B/315YM
DR10G-6-50B/315YM
DR15G-6-50B/315YM
DR20G-6-50B/315YM
DR25G-6-50B/315YM
DR10-6-50B/315YM
DR20-6-50B/315YM
DRC10G-6-50B/315YM
DRC15G-6-50B/315YM
DRC20G-6-50B/315YM
DRC25G-6-50B/315YM
DRC10-6-50B/315YM
DRC20-6-50B/315YM
DR10G-7-50B/315YM
DR15G-7-50B/315YM
DR20G-7-50B/315YM
DR25G-7-50B/315YM