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DR…50B型50系列壓力控制閥是先導式減壓閥，用于系統減壓。

這種減壓閥由主閥體及主閥芯和帶壓力設定件的先導閥構成。

停止時閥開啟，即油從油路B經過主閥芯流向油路A，A腔壓力作用在主閥芯底部。同時來自油路A的壓力經主閥芯節流孔并通過孔，作用在先導閥的球形閥芯上。根據彈簧的設定值，在球形閥芯前、油路和彈簧腔建立起壓力，控制閥芯在開啟位置。油可以**地從B流向A，直到A腔壓力超過彈簧的設定壓力，閥芯打開。控制閥芯移動到關閉位置與A腔壓力與彈簧到達平衡時，就打到了要求的減圧圧力。

華德6.jpg華德3.jpg華德5.jpg

控制油總是有彈簧腔經油口外泄油。

單向閥用了使油流從油路A**的流回到油路B。
DR20-4-50B/200Y北京華德先導式減壓閥質量優
壓力表接口用來連接壓力表以檢測A口二次壓力。

	通徑	管式
		通徑	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"

壓力等級（MPa）	30	5X
5		5
10	10	10
20		20
31.5		31.5
35	35	35

通經	（8）10	（15）20	（25）30
流量(L/min.)	80	200	300
工作壓力（MPa）	31.5
壓力（MPa）	31.5
出口壓力（MPa）	0.3~31.5	1-31.5
背壓Y口（MPa）	31.5
介質溫度(℃)	-20~70
過濾精度(μ)	25

部分型號：

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北京華德先導式減壓閥質量優
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