DREME20-5X/315YG24K31M 特价力士乐

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减压阀是通过调节，将进口压力减至某一需要的出口压力，并依靠介质本身的能量，使出口压力自动保持稳定的阀门。从流体力学的观点看，减压阀是一个局部阻力可以变化的节流元件，即通过改变节流面积，使流速及流体的动能改变，造成不同的压力损失，从而达到减压的目的。然后依靠控制与调节系统的调节，使阀后压力的波动与弹簧力相平衡，使阀后压力在一定的误差范围内保持恒定。
1)调压范围：它是指减压阀输出压力P2的可调范围，在此范围内要求达到规定的精度。调压范围主要与调压弹簧的刚度有关。
(2)压力特性：它是指流量g为定值时，因输入压力波动而引起输出压力波动的特性。输出压力波动越小，减压阀的特性越好。输出压力必须低于输入压力—定值才基本上不随输入压力变化而变化。
(3)流量特性：它是指输入压力—定时，输出压力随输出流量g的变化而变化的持性。当流量g发生变化时，输出压力的变化越小越好。一般输出压力越低，它随输出流量的变化波动就越小。
它可将阀前管路较高的液体压力减少至阀后管路所需的水平。这里的传输介质主要是水。减压阀广泛用于高层建筑、城市给水管网水压过高的区域、矿井及其他场合，以保证给水系统中各用水点获得适当的服务水压和流量。鉴于水的漏失率和浪费程度几乎同给水系统的水压大小成正比，因此减压阀具有改善系统运行工况和潜在节水作用，据统计其节水效果约为30%。
减压阀的构造类型很多，以往常见的有薄膜式、内弹簧活塞式等。减压阀的基本作用原理是靠阀内流道对水流的局部阻力降低水压。
JB/T2203－1999《减压阀结构长度》为主的通用类。目前国内大多数减压阀生产厂家均按本标准设计生产，但本标准也不尽无缺，规格不全。气体减压阀非常大公称通径为DN500，水用减压阀非常大公称通径DN1000。根据厂家所生产的减压阀规格及掌握的资料来看，各厂家连接尺寸也不尽统一，建议通用机械研究所对JB/T2203－1999《减压阀结构长度》进行修订。建议设计院及用户按标准选用，减压阀生产厂家按标准设计制造。
调压步骤

力士乐电液比例控制阀REXROTH电液比例控制阀现货优势型号如下：
力士乐伺服阀
0811403017 
0811402616 
0811404001
0811404059
0811402017 
4WREE6E08-2X/G24K31/A1V 现货 
4WREE6E08-2X/G24K31/F1V 现货
力士乐电液比例控制阀REXROTH电液比例控制阀现货优势型号如下：
0811404601 4WRPEH6C3B12L-2X/G24KO/A1M 
0811404033 4WRPH6C3B04L-2X/G24Z4/M
0811404035 4WRPH6C3B24L-2X/G24Z4/M
0811404036 4WRPH6C3B40L-2X/G24Z4/M
0811404037 4WRPH6C4B12L-2X/G24Z4/M
0811404039 4WRPH6C4B40L-2X/G24Z4/M
0811404043 4WRPH6C3B25P-2X/G24Z4/M
0811404044 4WRPH6C3B40P-2X/G24Z4/M
0811404046 4WRPH6C4B40P-2X/G24Z4/M 
0811404058 4WRPH10C3B50L-2X/G24Z4/M
0811404059 4WRPH10C3B100L-2X/G24Z4/M
0811404061 4WRPH10C4B100L-2X/G24Z4/M
0811404062 4WRPH10C3B50P-2X/G24Z4/M
0811404063 4WRPH10C3B100P-2X/G24Z4/M
0811404079 4WRPH10C5B100P-2X/G24Z4/M 
0811404145 4WRPE6W08SJ-2X/G24KO/A1M
0811404147 4WRPE6W32SJ-2X/G24KO/F1M
0811404160 4WRPH6C4B04L-2X/G24Z4/M
0811404162 4WRPH6C1B40P-2X/G24Z4M
0811404163 4WRPH6XB24L-2X/G24Z4/M-842
0811404166 4WRPH6XB12L-2X/G24Z4/M-842
0811404172 4WRPH6CB25P-2X/G24Z4/M
0811404175 4WRPH6XB4OL-2X/G24Z4/M-842
0811404177 4WRPH6XB12L-2X/G24KO/M-843
0811404180 4WRL10E80S-3X/G24Z4/M
0811404181 4WRL10E1-80S-3X/G24Z4/M
0811404182 4WRL10E1-80S-3X/G24ETZ4/M
0811404183 4WRL10W80S-3X/G24Z4/M
0811404184 4WRL10W1-80S-3X/G24Z4/M
0811404185 4WRL10W1-80S-3X/G24ETZ4/M
0811404186 4WRL10E4-80S-3X/G24Z4/M
0811404187 4WRL10W4-80S-3X/G24Z4/M
0811404188 4WRL10W80S-3X/G24ETZ4/M
0811404189 4WRL10E80S-3X/G24TZ4/M
0811404190 4WRL10E1-80S-3X/G24TZ4/M
0811404206 4WRL16V120M-3X/G24Z4/M
0811404207 4WRL16V200M-3X/G24Z4/M
0811404209 4WRL16WZ180S-3X/G24Z4/M
0811404210 4WRL16EZ180S-3X/G24Z4/M
0811404211 4WRL16W4-180S-3X/G24Z4/M
0811404212 4WRL16E1Z180S-3X/G24Z4/M
0811404213 4WRL16W1Z180S-3X/G24Z4/M
0811404214 4WRL16E4-180S-3X/G24Z4/M
0811404215 4WRL16E110S-3X/G24Z4/M
0811404216 4WRL16E1-110S-3X/G24Z4/M
0811404217 4WRL16W180S-3X/G24EZ4/M
0811404250 4WRLE16V120M-3X/G24KO/A1M
0811404251 4WRLE16V200M-3X/G24KO/A1M
0811404252 4WRLE16Q5200M-3X/G24KO/A1M
0811404269 4WRLE16V200M-3X/G24KO/B5M
0811404270 4WRLE16Q4-200M-3X/G24ETKO/A1M
0811404271 4WRLE16V120M-3X/G24KO/B5M
0811404272 4WRLE16V200M-3X/G24KO/F1M
0811404275 4WRLE16Q4-200M-3X/G24TKO/A1M
0811404276 4WRLE16Q4-200M-3X/G24KO/A1M
0811404290 4WRVE16V120M-2X/G24KO/B5M
0811404291 4WRVE16V200M-2X/G24KO/B5M
0811404300 4WRLE16W180SJ-3X/G24EKO/A1M


0811404305 4WRLE16EZ180SJ-3X/G24KO/A1M
0811404306 4WRLE16E1Z180SJ-3X/G24KO/A1M
0811404307 4WRLE16WZ180SJ-3X/G24KO/A1M
0811404308 4WRLE16W1Z180SJ-3X/G24KO/A1M
0811404317 4WRLE16W2-180SJ-3X/G24KO/A1M
0811404318 4WRLE16EZ180SJ-3X/G24TKO/A1M
0811404319 4WRLE16EZ180SJ-3X/G24ETKO/A1M
0811404320 4WRLE16W5-180SJ-3X/G24KO/A1M
0811404325 4WRLE16WA110SJ-3X/G24KO/A1M
0811404327 4WRLE16W1Z180SJ-3X/G24ETKO/A1M
0811404328 4WRLE16W4-180SJ-3X/G24ETKO/A1M
0811404329 4WRLE16WA180SJ-3X/G24KO/A1M
0811404390 4WRL10V85M-3X/G24ETZ4/M
0811404405 4WRL25V370M-3X/G24Z4/M
0811404406 4WRL25WZ350S-3X/G24Z4/M
0811404407 4WRL25EZ350S-3X/G24Z4/M
0811404408 4WRL25E1Z350S-3X/G24Z4/M
0811404409 4WRL25W1Z350S-3X/G24Z4/M
0811404420 4WRL25E4-350S-3X/G24Z4/M
0811404421 4WRL25W4-350S-3X/G24Z4/M
0811404429 4WRLEM25EZ350SJ-3X/G24KO/A1M
0811404430 4WRLE25V370M-3X/G24KO/A1M
0811404431 4WRLE25Q5-370M-3X/G24KO/A1M
0811404432 4WRLE27V430M-3X/G24KO/A1M
0811404438 4WRLE27Q4-430M-3X/G24ETKO/A1M
0811404441 4WRLE27Q4-430M-3X/G24KO/A1M
0811404442 4WRLE27Q4-430M-3X/G24TKO/A1M
0811404445 4WRVE25V370M-2X/G24KO/B5M
0811404454 4WRLE25EZ350SJ-3X/G24KO/A1M
0811404455 4WRLE25E1Z350SJ-3X/G24KO/A1M
0811404456 4WRLE25WZ350SJ-3X/G24KO/A1M
0811404457 4WRLE25W1Z350SJ-3X/G24KO/A1M
0811404458 4WRLE27W430SJ-3X/G24KO/A1M
0811404466 4WRLE25EZ350SJ-3X/G24TKO/A1M
0811404471 4WRLE25W4-350SJ-3X/G24ETKO/A1M
0811404472 4WRLE25W4-350SJ-3X/G24KO/A1M
0811404478 4WRLE27E430SJ-

R900915966 ZDRE 6 VP4-1X/210MG24K4M
R900915965 ZDRE 6 VP3-1X/50MG24NK4M
R900915964 ZDRE 6 VP3-1X/100MG24NK4M
R900915963 ZDRE 6 VP2-1X/210MG24K4M
R900915962 ZDRE 6 VP2-1X/210MG24NK4M
R900915961 ZDRE 6 VP1-1X/50MG24NK4M
R900915959 ZDRE 6 VP1-1X/210MG24NK4M
R900915958 ZDRE 6 VP1-1X/100MG24NK4M
R900915956 ZDRE 10 VP4-1X/100YMG24NK4M
R900915955 ZDRE 10 VP3-1X/100XLMG24NK4M
R900915954 ZDRE 10 VP2-1X/315XLMG24NK4M
R900915952 ZDRE 10 VP2-1X/100XLMG24NK4M
R900915951 ZDRE 10 VP1-1X/200YMG24NK4M
R900912137 ZDRE 10 VP4-1X/200XLMG24NK4M
R900910679 MHDRE 06 SK2X/18AG24CKV
R900907850 DREM 10-5X/315YMG24K4M
R900903970 MHDRE 06 SK2X/26AG12C4V
R900903322 ZDRE 10 VP1-1X/200XLMG24NK4M
R900901953 DRE 6-1X/210MG24NK4M
R900900827 ZDRE 10 VP2-1X/200XYMG24NK4M
R900900653 DRE 10-5X/100YG24K4M
R900900031 ZDRE 10 VP3-1X/100YMG24NK4M
R900897262 DICHTUNGSSATZ 3DRE/3DREM16P-6X/V
R900895870 DECKEL M4-12-10/WZav DRE2+HU+LS. *PG
R900895351 DECKEL M4-12-10/WZA DRE2+HUB+LS. *BG
R900890781 DICHTUNGSSATZ ZDRE10-10/V
R900886590 KOLBEN ZDRE10.-12/
R900886589 DECKEL ZDRE 10 .-12/
R900885742 GEHAEUSE ZDRE10.-12/
R900883310 VERSCHLUSSSCHRAUBE FTDRE 2 K10/V ZU *BG
R900865471 HEBEL LT 17 MFA-30/ SO16 SENSOR,DREHW.
R900862813 GEHAEUSE FTDRE 4 G10/01 G1/4 M22X1,5
R900862050 DECKEL M4-15-10/WZA01 DRE2 + HUBB. *BG
R900860749 DICHTSATZ MHDRE 06 K20/V
R900857683 KOLBEN 3DREP6.-20/45BAR BG
R900857682 KOLBEN 3DREP6.-20/25BAR BG
R900857681 KOLBEN 3DREP6.-20/16BAR BG
R900857680 BOLZEN 5,0 X 18,6 3DREP 6 .-20/25 BAR
R900855635 VERSCHLUSSSCHRAUBE FTDRE 4 K10/V ZU *BG
R900853992 DREPV 6 C-1X/25P10AG24NK4M
R900853864 DREPV 6 C-1X/25P16AG24NK4M
R900849367 VENTIL MHDRE 06 SK20/18AG..V O.SPULE
R900845871 VENTIL MHDRE 06 SK20/26A V O.SPULE
R900845137 DECKEL M4-15-10/WZA DRE2 + HUBB. *BG
R900843693 DICHTUNGSSATZ ZDRES6-10/M
R900839579 DECKEL M4-15-10/WZA DRE2 &
R900839554 GEHAEUSE MHDRE 06 G10/50 M18X1,5S
R900836186 VERSCHLUSSSCHRAUBE FTDRE 4 K10/V P-A *BG
R900828234 PLATINE MHCSP 30-20/24V SWE10V FTDRE2
R900813098 PLATTE ZDRE 10 .-10/-2
R900810543 KEGEL 1,37- 7,5 X 31,7 Z12,0 DRE6-10/
R900810541 VENTILSITZ DRE 6 -10/210
R900810540 VENTILSITZ DRE 6 -10/100
R900804824 DREHKNOPF DB 6 K.-40/
R900800445 DREHKNOPF 2FRM 6 ..-21/
R900786531 DREE 20-5X/200YMG24NK31V
R900782219 3DREPE 6 C-2X/16EG24N9K31/F1M
R900780106 FTDRE 4 K10/30AG24K4003V-8
R900779370 DRE 20-5X/200YG24NK4V
R900778931 3DREME 10 P-6X/200YG24K31V-10
R900778798 DREME 10-5X/200YMG24K31M-13
R900774488 3DREE 10 P-6X/100XYG24K31V
R900774168 ZDRE 10 VP1-1X/200XLMG24K4M
R900772417 DREME 10-5X/315YG24K31V
R900771731 FTDRE 4 K10/30AG24K40V-8
R900771340 ZDRE 10 VP1-1X/315YMG24K4M
R900768957 LFA 40 DREV-7X/006/12
R900768312 FTDRE 2 K32/18AG12K43V-009
R900767594 FTDRE 2 K32/24AG24K4003V-8
R900767191 3DRE 16 P-6X/200XYG24K4V
R900766809 FTDRE 2 K3X/24AG24K40V-018
R900766765 DREM 20-5X/200YMG24K4V
R900766603 DREM 30-4X/315YMG24K4V
R900766041 ZDRE 10 VP2-1X/50XLMG24K4M
R900765336 DRE 30-4X/315YMG24K4M
R900765275 3DREME 10 P-6X/100YG24K31V
R900763661 3DRE 10 P-6X/315XYG24K4V
R900763568 LFA 32 DREV-7X/006V
R900762300 3DRE 16 P-6X/100YG24K4V
R900757928 ZDREE 10 VP4-1X/200XLMG24K31M
R900757493 DRE 20-5X/200YG24K4V
R900756822 DRE 20-5X/315YMG24K4V
R900756361 FTDRE 2 K32/18AG12C2V-8


R900932154 3DREP 6 C-2X/25EG24K4/V
R900930942 ZDRE 6 VP2-1X/100MG24K4M
R900929529 3DREP 6 C-2X/25EG24N9K4/V

电液比例阀简称比例阀。普通液压阀只能通过预调的方式对液流的压力、流量进行定值控制。但是当设备机构在工作过程中要求对液压系统的压力、流量参数进行调节或连续控制，例如.要求工作台在工作进给时按慢、快、慢连续变化的速度实现进给，或按一定精度模拟某个较佳控制曲线实现旅力控制.普通液压阀则实现不了。这时可以用电液比例阀对液压系统进行控制。
电液比例阀是一种按输入的电信号连续地、按比例地控制液压系统的液流方向、流量和压力的阀类。它山电-机械比例转换装置和液压控制阀本体两大部分构成.前者将输入的电信号连续地按比例地转换为机械力和位移输出，后者在接受这种机械力和位移之后、按比例连续地输出压力和流量.
电液比例阀的发展主要有两个途径一是用比例电磁铁取代传统液压阀的手动调节装置或取代普通电磁铁发展起来的;二是由电液伺服阀简化结构、