Rexroth比例减压阀3DREME10P-7X/200YG24K31F1V

比例减压阀属高压阀系列，适用于冶金、石油、液压、水压试验机组上。主要用途：是采用节流耗能达到降压的功能，能使高压、超高压设备和高压管道内的高压水通过此阀将高压水降至低压所需压力后排出，使高压系统压力均匀降低。

比例减压阀由油缸、阀体两部分组成。而节流孔板和高压调节阀设计为一体，阀门开关排泄流量和降压由液压缸行程控制。能任意调整排泄压力及流量，安全，方便。

比例减压阀：压降从50兆帕至于1.6兆帕，可以调节排泄压力。

比例减压阀工作原理:

导阀的开启都是利用顶部的调节螺栓顺时针方向拧动，使弹簧缩产生的弹力，使导阀膜片向下凹陷，作用在导阀连杆上的力，使之向下位移打开导阀。当导阀开启后，上游进汽管段A腔的蒸汽通过α通道（供汽调节通道），经过导阀进入导阀环形汽腔，由β通道直接送到下面的活塞汽缸上腔。在A腔蒸汽不断的供给下，压力持续升高，推动活塞下行打开主阀，这时蒸汽源源不断从A腔流至B腔。当下游出口管段B腔负荷满足的情况下，余多的蒸汽又使B腔内的压力不断升高。不断升高的压力通过γ通道（压力感应通道）反馈到导阀膜片下腔，使导阀膜片向上突起，克服了上部调节弹簧的压力，导阀被关小或关闭。从而，关小或关闭来自上游α通道的蒸汽源。当活塞汽缸上腔压力下降时，在下面复位弹簧的作用下，主阀被关小或关闭，这时B腔内的压力开始下降，这样周而复始达到调压的目的。

型号 (Z)DRE and ZDREE 10 

比例减压阀，先导式

规格6和10 

安装面按DIN 24340 A型和ISO 4401 

用于降低系统压力的阀 

比例电磁铁操作 

底板安装，DRE 6型 

叠加式，ZDRE 6 和10型 

线性压力/指令值特性曲线 

集成电控器（OBE），用于ZDREE 10 

型号 DRE(M) 和 DRE(M)E 

比例减压阀，先导式

规格10至32 

安装面按DIN 24340 D型 

用于降低系统压力的阀 

比例电磁铁操作 

底板安装 

线性压力/指令值特性曲线 

用于DREM和DREME型的最大减压功能 

可选单向阀，在A和B油口之间 

集成电控器（OBE），用于DREE和DREME

型号 DRE 

比例减压阀，先导式

规格6和10 

规格6：安装面按ISO 4401 

规格10：安装面按ISO 5781-AG-06-2-A 

用于降低系统压力的阀 

比例电磁铁操作 

通过电磁铁电枢位置进行调节 

DREBE型的集成电控器（OBE）

型号 3DRE(M) 和 3DRE(M)E 

比例减压阀，先导式

规格10和16 

安装面按DIN 24340 A型和ISO 4401 

用于降低系统压力的阀 

比例电磁铁操作 

底板安装 

用于3DREE and 3DREME的集成电控器（OBE） 

型号 DRS and ZDRS 

比例减压阀，先导式，有直流马达操作

规格6 

安装面按ISO 4401 

用于降低系统压的阀，有溢流功能 

直流马达操作 

底板安装 

作为叠加阀 

集成压力监测，可选

R978919600 DRE10-5X/100YG24K4V/12 US00919600

R978919474 DREM20-5X/315YMG24K4V US00919474

R978918235 DREM10-5X/315YG24K4M/12 US00918235

R978914779 DRE20-5X/315YMG24K4MSO43A-1665 US00914779

R978914602 DREM20-5X/315YMG24K4M/12 US00914602

R978913564 DREM10-5X/200YG24K4MSO43A-976 US00913564

R978913432 DREM10-5X/315YG24K4V/12 US00913432

R978913394 DRE10-5X/200YG24K4V/12 US00913394

R978912751 DRE10-5X/315YMG24K4/12 US00912751

R978912646 DRE10-5X/100YG24K4M/12 US00912646

R978912167 DREM10-5X/200YG24K4V/12 US00912167

R978912050 DRE10-5X/200YMG24K4M/12 US00912050

R978911688 DRE10-5X/200YMG24K4V/12 US00911688

R978911606 DRE10-5X/100YMG24K4M/12 US00911606

R978911284 DRE10-5X/315YMG24K4V/12 US00911284

R978910880 DREM10-5X/100YG24K4M/12 US00910880

R978909943 DREE30-4X/200YMG24K31M/12 US00909943

R978810581 RESERVOIR10PUA40-01.03W/LIDREV2 US00810581

R978807707 VTPATCHCORDREDAK205/410SIL100CM US00807707

R978025599 DREM10-5X/50YG24K4M/12

R978017482 DRE20-5X/200YMG24K4M/12

R978014699 DRE20-5X/100YMG24K4V/12

R901229977 3DREME10P-7X/200XYG24K31A1V

R901223093 ZDREE10VP2-2X/200YMG24K31A1V

R901218097 3DREME10P-7X/200YG24K31F1V

R901165931 3DREME16P-6X/200YG24K31V-10

R901162150 DREBE10Z-1X/180XYMG24K31F1M

R901145120 ZDREE10VP3-1X/100XLMG24K31M

R901136413 DREME20-5X/200YMG24K31V

R901125399 ZDREE10VP2-1X/200YMG24NK31V

R901123196 3DREPE6A-2X/16EG24N9K31/A1V

R901103660 3DREME10P-6X/315XYG24K31V

R901096646 ZDRE10VP2-1X/315XYMG24NK4V

R901084277 DREBE6X-1X/75MG24K31F1M R901PT0039

R901069746 3DREPE6A-2X/25EG24K31/F1M

R901034501 ZDRE6VP1-1X/100MG24K4M-1

R901030757 LFA40DREV-7X/006D15/12

R901026612 DREME10-5X/100YG24K31V

R901026376 3DREME10P-6X/200XYG24K31V

R901024458 ZDREE10VP1-1X/200LMG24NK31V

R901015676 3DREPE6C-2X/16EG24N9K31/A1M

R901004483 DRE6-1X/100MG24NK4M-1

R901003479 ZDREE10VP1-1X/200XYMG24NK31M

R901001645 ZDRE10VP2-1X/100YMG24K4M

R901000977 DREM20-5X/315YMG24K4V

R900978854 ZDRE10VP2-1X/50YMG24NK4V 978854

R900978335 LFA50DREV-7X/006/12 978335

R9009708110 3DREPE6A-2X/45EG24N9K31/F1M 9708110

R900977647 3DREME10P-6X/200YG24K31V 977647

R900975912 3DREPE6A-2X/25EG24N9K31/F1V 975912

R900975066 DRE10-5X/50YG24K4V 975066

R900973982 DREE10-5X/315YG24K31M 973982

R900973942 LFA40DREV-7X/006V 973942

R900971893 ZDRE10VP2-1X/100XLMG24NK4V 971893

R900971583 LFA50DREWV-7X/006 971583

R900971315 DRE30-4X/100YMG24K4M 971315

R900970698 3DREPE6C-2X/45EG24N9K31/F1V 970698

R900969177 DRE10-5X/50YMG24K4V 969177

R900967409 ZDRE10VP2-1X/100XLMG24K4M 967409

R900967209 3DREP6A-2X/16EG24N9K4/V 967209

R900967164 3DREPE6A-2X/25EG24K31/A1V 967164

R900967050 ZDRE6VP1-1X/100MG24K4M 967050

R900966991 3DREP6C-1X/45A24N9K4V 966991

R900966140 DRE10-5X/315YMG24K4V 966140

R900966032 DREME20-5X/315YMG24K31M 966032

R900964946 ZDRE10VP2-1X/315XLMG24K4M 964946

R900964875 DREME10-5X/100YG24NK31M 964875

R900964831 DREM10-5X/100YMG24K4V 964831

R900964518 3DREM10P-6X/315YG24K4V 964518

R900964384 DRE30-4X/200YG24K4M 964384

R900964169 3DREME16P-6X/200XYG24K31V 964169

R900963813 DRE10-5X/315YG24K4V 963813

R900963713 3DREPE6C-2X/45EG24N9K31/A1V 963713

R900963389 ZDREE10VP1-1X/315XLMG24NK31M-2 963389

R900963330 DREM20-5X/200YMG24K4M 963330

R900962990 DRE30-4X/200YMG24K4M 962990

R900962045 3DREP6A-2X/45EG24N9K4/M 962045

R900961474 3DREME16P-6X/200YG24K31V 961474

R900961109 ZDRE10VP1-1X/100XLMG24K4M 961109

R900961023 DREE20-5X/200YG24NK31M 961023

R900960925 DREME10-5X/100YMG24NK31M 960925

R900960161 3DREP6B-1X/45A24N9K4M 960161

R900959884 LFA32DREWV-7X/006/12 959884

R900959883 LFA40DREWV-7X/006/12 959883

R900959741 3DREP6C-1X/45A24N9K4M 959741

R900959694 DRE30-4X/200YG24NK4M 959694

R900959382 DRE10-5X/200YG24K4V 959382

R900959370 DRE4K-3X/30G24-10NK4M 959370

R900959369 DRE4K-3X/30G24-10K4M 959369

R900959368 DRE4K-3X/18G24-10K4M 959368

R900959338 3DREPE6B-2X/25EG24K31/F1M 959338

R900959265 DRE6-1X/100MG24NK4V 959265

R900959129 3DREP6A-2X/45EG24N9K4/V 959129

R900959045 DREM10-5X/50YMG24K4M 959045

R900958957 ZDRE6VP1-1X/100MG24K4V 958957

R900958861 3DREM16P-6X/200YG24K4V 958861

R900958858 ZDREE10VP3-1X/200XLMG24NK31M 958858

R900958848 3DREPE6C-2X/25EG24N9K31/F1M 958848

R900957824 DREE20-5X/100YMG24NK31M 957824

R900957030 LFA25DREWV-7X/006/12 957030

R900956636 3DREP6B-2X/25EG24N9K4/M 956636

R900956626 ZDRE10VP3-1X/200XLMG24NK4M 956626

R900956336 DREE20-5X/200YMG24NK31M 956336

R900956182 3DREPE6B-2X/25EG24K31/A1M 956182

R900956100 3DREP6C-2X/16EG24N9K4/M 956100

R900955887 3DREP6C-2X/25EG24N9K4/M 955887

R900955853 3DREPE6C-2X/25EG24K31/F1V 955853

R900955803 3DREP6A-2X/25EG24N9K4/M 955803

R900955796 3DREP6C-2X/45EG24N9K4/M 955796

R900955784 3DREPE6C-2X/25EG24N9K31/A1M 955784

R900955749 ZDREE10VP2-1X/100XLMG24NK31V 955749

R900955652 DREM10-5X/200YMG24K4V 955652

R900954828 3DREP6A-1X/45A12NK4M 954828

R900954523 3DREE16P-6X/200YG24K31V 954523

R900954517 3DREE10P-6X/100YG24K31V 954517

R900954514 DREE30-4X/200YMG24K31M 954514

R900954510 DREE20-5X/315YMG24K31M 954510

R900954474 3DREP6A-2X/16EG24K4/M 954474

R900954431 ZDRE6VP2-1X/50MG24K4M 954431

R900954429 DRE6-1X/50MG24K4M 954429

R900954427 3DREPE6C-2X/25EG24K31/A1M 954427

R900954423 3DREPE6A-2X/25EG24K31/A1M 954423

R900954420 3DREP6C-2X/25EG24K4/M 954420

R900954418 3DREP6A-2X/45EG24K4/M 954418

R900954417 3DREP6A-2X/25EG24K4/M 954417

R900954411 3DREP6A-2X/16EG24K4/V 954411

R900952378 ZDREE10VP1-1X/200XLMG24NK31M 952378

R900950719 DREE10-5X/100YMG24K31M 950719

R900950470 ZDRE10VP2-1X/200XLMG24NK4V 950470

R900950403 3DREM16P-6X/100YG24K4V-1 950403

R900950303 3DRE10P-6X/100YG24K4V-1 950303

R900950260 DREM20-5X/100YMG24K4M 950260

R900950007 DREE10-5X/315YMG24NK31M 950007

R900949908 DREME10-5X/315YMG24K31M 949908

R900949743 DREM10-5X/200YG24NK4V 949743

R900949125 3DREM16P-6X/200XYG24K4V-1 949125

R900948950 3DREM16P-6X/200YG24K4V-1 948950

R900948621 3DREE10P-6X/200YG24K31V 948621

R900948587 ZDREE10VP2-1X/200XLMG24K31M 948587

R900948093 DRE10-5X/50YMG24K4M 948093

R900947955 3DREP6B-2X/25EG24N9K4/V 947955

R900947680 DREM10-5X/100YG24NK4M 947680

R900947444 3DREP6C-2X/45EG24N9K4/V 947444

R900947023 ZDRE10VP1-1X/200XLMG24NK4V 947023

R900945801 3DREP6A-2X/25EG24N9K4/V 945801

R900945686 3DREP6A-2X/25EG24K4/V 945686

R900945630 LFA25DREV-7X/006 945630

R900944999 DRE6-1X/210MG24K4V 944999

R900944899 DRE10-5X/50YG24K4M 944899

R900944231 3DREP6C-2X/16EG24N9K4/V 944231

R900943943 3DREPE6B-2X/25EG24N9K31/F1V 943943

R900943631 3DREM10P-6X/315YG24K4V-1 943631

R900943289 3DREPE6A-2X/45EG24N9K31/A1V 943289

R900943090 3DRE10P-6X/200XYG24K4V-1 943090

R900943003 DREE10-5X/100YG24K31M 943003

R900942975 3DRE10P-6X/200YG24K4V-1 942975

R900942951 3DREM10P-6X/200YG24K4V-1 942951

R900942249 DREE10-5X/50YMG24NK31M 942249

R900941879 LFA32DREV-7X/006/12 941879

R900940764 DREM10-5X/100YMG24K4M 940764

R900940275 ZDREE10VP4-1X/200XLMG24NK31M 940275

R900939533 DREE10-5X/200YG24K31M 939533

R900938241 LFA63DREV-7X/006 938241

R900938194 LFA50DREV-7X/006 938194

R900938104 LFA40DREV-7X/006 938104

R900937209 DREE10-5X/315YMG24K31M 937209

R900937022 DREE10-5X/200YMG24K31M 937022

R900936785 ZDREE10VP2-1X/50XLMG24NK31M 936785

R900935959 DREME10-5X/200YMG24K31M 935959

R900935786 DRE20-5X/200YG24NK4M 935786

R900935785 DRE20-5X/100YG24NK4M 935785

R900935754 ZDREE10VP2-1X/315XLMG24NK31M 935754

R900934478 ZDREE10VP2-1X/100LMG24NK31V 934478

R900932943 DRE6-1X/100MG24K4M 932943

R900932154 3DREP6C-2X/25EG24K4/V 932154

R900931312 DRE10-5X/100YG24NK4M 931312

R900931050 3DREPE6B-2X/25EG24N9K31/A1V 931050

R900930942 ZDRE6VP2-1X/100MG24K4M 930942

R900929865 3DREPE6B-2X/45EG24N9K31/A1V=LB 929865

R900929763 DRE10-5X/315YG24K4M 929763

R900929529 3DREP6C-2X/25EG24N9K4/V 929529

R900928873 DRE6-1X/210MG24K4M 928873

R900928552 DREM10-5X/200YG24NK4M 928552

R900928329 DRE10-5X/200YMG24NK4M 928329

R900927618 DREE20-5X/315YMG24NK31M 927618

R900926984 3DREPE6C-2X/25EG24N9K31/F1V 926984

R900926930 DRE10-5X/200YMG24K4M 926930

R900926631 3DREP6A-1X/25A24N9K4M 926631

R900926157 ZDRE6VP4-1X/100MG24NK4M 926157

R900925707 3DREPEB6C-2X/25EG24N9K31/A1V 925707

R900925527 3DREPE6C-2X/25EG24K31/A1V 925527

R900925526 3DREPE6A-2X/25EG24N9K31/A1V 925526

R900925484 3DREPE6C-2X/25EG24N9K31/A1V 925484

R900925066 DREME10-5X/200YG24K31M 925066

R900925013 3DREPE6B-2X/45EG24N9K31/A1V 925013

R900924796 DREM10-5X/315YG24K4V 924796

R900924326 DREME20-5X/315YG24K31M 924326

R900923432 DREE10-5X/200YMG24NK31M 923432

R900923187 DREM20-5X/315YG24K4M 923187

R900923017 ZDREE10VP2-1X/200XLMG24NK31M 923017

R900922925 DRE20-5X/315YG24K4M 922925

R900921798 ZDREE10VP2-1X/100XLMG24NK31M 921798

R900920814 DREME10-5X/100YG24K31M 920814

R900920580 DREE10-5X/100YG24NK31M 920580

R900918272 DREME20-5X/200YMG24K31M 918272

R900917728 DRE10-5X/200YG24K4M 917728

R900917218 3DREP6B-1X/25A24N9K4M 917218

R900916266 DRE20-5X/200YG24K4M 916266

R900916199 DRE20-5X/315YMG24K4M 916199

R900916198 DRE20-5X/100YG24K4M 916198

R900916197 DRE10-5X/200YG24NK4M 916197

R900916196 DRE10-5X/315YMG24K4M 916196

R900916195 DRE6-1X/50MG24NK4M 916195

R900915981 DREM20-5X/315YMG24K4M 915981

R900915979 DREM20-5X/200YG24K4M 915979

R900915976 DREM20-5X/100YG24NK4M 915976

R900915975 DREM10-5X/50YG24K4M 915975

R900915974 DREM10-5X/315YG24K4M 915974

R900915973 DREM10-5X/200YMG24K4M 915973

R900915972 DREM10-5X/200YG24K4M 915972

R900915969 DREM10-5X/100YG24K4M 915969

R900915966 ZDRE6VP4-1X/210MG24K4M 915966

R900915963 ZDRE6VP2-1X/210MG24K4M 915963

R900915961 ZDRE6VP1-1X/50MG24NK4M 915961

R900915955 ZDRE10VP3-1X/100XLMG24NK4M 915955

R900915954 ZDRE10VP2-1X/315XLMG24NK4M 915954

R900915951 ZDRE10VP1-1X/200YMG24NK4M 915951

R900912137 ZDRE10VP4-1X/200XLMG24NK4M 912137

R900907850 DREM10-5X/315YMG24K4M 907850

R900901953 DRE6-1X/210MG24NK4M 901953

R900900653 DRE10-5X/100YG24K4M 900653

R900779370 DRE20-5X/200YG24NK4V 779370

R900769060 3DREM16P-6X/250XYG24K4V-2 769060

R900768957 LFA40DREV-7X/006/12 768957

R900766041 ZDRE10VP2-1X/50XLMG24K4M 766041

R900756822 DRE20-5X/315YMG24K4V 756822

R900748593 ZDRE6VP1-1X/100MG24K4V-5 748593

R900748507 DRE6-1X/100MG24NK4V-5 748507

R900744835 DREM20-5X/200YG24K4V 744835

R900742502 ZDREE10VP4-1X/100XLMG24NK31M 742502

R900733935 DREE10-5X/50YG24NK31M 733935

R900726891 DREM10-5X/200YG24K4V 726891

R900723160 DRE6-1X/100MG24K4V 723160

R900718469 DREME20-5X/315YG24K31V 718469

R900717553 3DREPE6A-2X/45EG24K31/A1V 717553

R900712624 DRE6-1X/50MG24K4V 712624

R900712540 ZDREE10VP1-1X/315XLMG24NK31M 712540

R900710080 ZDRE10VP1-1X/200XYMG24NK4V 710080

R900708361 DREM10-5X/50YMG24NK4M 708361

R900705978 DREE20-5X/200YG24K31M 705978

R900705197 3DREME10P-6X/315YG24K31V 705197

R900705140 3DRE16P-6X/200YG24K4V 705140

R900704208 DREM20-5X/100YMG24NK4V 704208

R900702065 ZDRE10VP1-1X/100LMG24NK4V 702065

R900700593 3DREPE6C-2X/16EG24N9K31/A1V 700593

R900617992 ZDRE6VP1-1X/50MG24K4M 617992

R900617983 DREM20-5X/315YG24K4V 617983

R900616690 ZDREE10VP1-1X/100XLMG24NK31M 616690

R900582096 DRE10-5X/100YMG24K4M 582096

R900580607 DREMCH30-4X/200YM 580607

R900573750 3DREP6C-1X/25A24N9K4V 573750

R900573377 ZDRE10VP2-1X/200XLMG24NK4M 573377

R900556315 DREM20-5X/100YG24K4M 556315

R900551330 3DREP6C-1X/25A24NK4V 551330

R900550096 3DREP6C-1X/16A24N9K4M 550096

R900548837 DRE6-1X/100MG24NK4M 548837

R900547399 ZDRE10VP2-1X/200YMG24NK4M 547399

R900547100 3DREP6C-1X/25A24N9K4M 547100

R900546913 DRE20-5X/200YMG24K4M 546913

R900498485 3DREP6C-1X/25A12NK4M 498485

R900498469 3DREP6A-1X/25A12NK4M 498469

R900496940 DRE4K-3X/30G12-22NK4M 496940

R900494199 3DREP6A-1X/45A24NK4M 494199

R900494198 3DREP6A-1X/45A24NK4V 494198

R900494195 3DREP6B-1X/45A24NK4M 494195

R900494191 3DREP6C-1X/45A24NK4M 494191

R900494190 3DREP6C-1X/45A24NK4V 494190

R900494175 3DREP6A-1X/25A24NK4M 494175

R900494171 3DREP6B-1X/25A24NK4M 494171

R900494167 3DREP6C-1X/25A24NK4M 494167

R900494165 3DREP6C-1X/25A24K4M 494165

R900494159 3DREP6B-1X/16A24NK4M 494159

R900494155 3DREP6C-1X/16A24NK4M 494155

R900481252 DRE4K-3X/30G12-22K4V 481252

R900462346 DRE4K-3X/18G12-14NK4M 462346

R900451448 3DREP6A-1X/45A24N9K4M 451448

R900426653 DRE4K-3X/18G12-14K4M 426653

R900420674 DRE4K-3X/18G24-10NK4M 420674

R900404393 DRE4K-3X/18G12-22K4M 404393

R900248789 ZDREE10VP4-1X/315XLMG24NK31M 248789

R900245955 ZDREE10VP1-1X/200YMG24NK31M 245955

R900244331 3DRE10P-6X/315YG24K4V 244331

0811402300 DREBE6X-1X/310MG24K0A1M 0811402300-0

0811402183 ZDRE6VP1X-1X/180YG24-25Z4M 0811402183-0

0811402182 ZDRE6VP1X-1X/180G24-25Z4M

0811402171 ZDRE10VP3X-1X/250YMG24-8Z4M 0811402171-0

0811402170 ZDRE10VP4X-1X/250YMG24-8Z4M-7 0811402170-0

0811402166 ZDRE10VP4X-1X/250YMG24-8Z4M

0811402165 ZDRE10VP2X-1X/180LG24-25Z4M-8

0811402163 ZDREBE10VP3X-1X/250YG24K0B5M

0811402162 ZDREB10VP3X-1X/250YMG24-25Z4M 0811402162-0

0811402155 DREBE10Z-1X/180XYMG24K31A1M 0811402155-0

0811402154 DRE10Z-1X/315XYMG24-8NZ4M 0811402154-0

0811402153 DRE10Z-1X/180XYMG24-8NZ4M 0811402153-0

0811402152 DREBE10Z-1X/315XYMG24K31A1M 0811402152-0

0811402151 DREB10Z-1X/315XYMG24-37Z4M 0811402151-0

0811402150 DREB10Z-1X/180XYMG24-37Z4M 0811402150-0

0811402083 DREBE6X-1X/175MG24K31F1M 0811402083-0

0811402082 DREBE6X-1X/75MG24K31A1M 0811402082-0

0811402081 DREBE6X-1X/310MG24K31A1M 0811402081-0

0811402080 DREBE6X-1X/175MG24K31A1M 0811402080-0

0811402059 DRE6X-1X/75MG24-8NZ4M 0811402059-0

0811402058 DRE6X-1X/310MG24-8NZ4M 0811402058-0

0811402055 DRE6X-1X/175MG24-8NZ4M 0811402055-0

0811402053 DRE6X-1X/75MG24-25NZ4M 0811402053-0

0811402052 DREB6X-1X/310MG24-25Z4M 0811402052-0

0811402051 DREB6X-1X/175MG24-25Z4M 0811402051-0

0811402050 DREB6X-1X/75MG24-25Z4M 0811402050-0

比例式减压阀 阀门利用阀体内部活塞两端截面积不同产生的压力差，改变阀后的压力达到减压的目的，比例准确，工作平稳，寿命长，适用温度高，既可减动压，又可减静压，水平、垂直安装均可。

比例式减压阀,外形美观,质量可靠,比例准确,工作平稳,既减动压也减静压。 该阀利用阀体内部活塞两端不同载面积产生的压力差,改变阀后的压力,达到减压目的。比例式减压阀的减压比例是：2∶1，3∶1，4∶1，3∶2，5∶2等，亦可根据要求设计特殊比例的减压阀。

比例阀当在阀后管网上无用水时阀门关闭，阀前后压力比是定值；当阀后管网启用消火栓或喷头喷水时，阀前压力大于阀后压力，推动活塞后移比例式减压阀打开，阀后管网压力随流量的增加而降低（符合流量-压力特性曲线），直至达到平衡位置，活塞停止移动。 当阀后管网停止用水时由于活塞后端压强升高，比例式减压阀活塞失去平衡状态而前移，比例式减压阀关闭。一般选择比例式减压阀是使设计流量在流量-压力特性曲线的直线段上，这样阀后压力与阀前压力仍呈比例关系。