R900703811VT-DFP-A-2X/G24KO/0/V专营销售力士乐液压元件:柱塞泵A10VSO、电磁阀4WE、电磁阀3WE、溢流阀DBW、DBDS、DB、3DR、节流阀Z2S、Z2F、叶片泵PV7、PVV、齿轮泵PH2,PH4,PGF、HM20/HM17压力传感器、压力继电器HED、博世放大器、放大板、阀0811、0820、齿轮泵0510、减压阀DR、ZDR、4WREE,马达伺服驱动电机等系列***现货优势供应阀对流量的控制可以分为两种：一种是开关控制：要么全开、要么全关，流量要么***大、要么***小，没有中间状态，如普通的电磁直通阀、电磁换向阀、电液换向阀。另一种是连续控制：阀口可以根据需要打开任意一个开度，由此控制通过流量的大小，这类阀有手动控制的，如节流阀，也有电控的，如比例阀、伺服阀。VT-DFP-A-2X/G24KO/0/VVT-DFP-A-2X/G24KO/0/VVT-DFP-A-2X/G24KO/0/VVT-DFP-A-2X/G24KO/0/VVT-DFP-A-2X/G24KO/0/VVT-DFP-A-2X/G24KO/0/V所以使用比例阀或伺服阀的目的就是：以电控方式实现对流量的节流控制（当然经过结构上的改动也可实现压力控制等），既然是节流控制，就必然有能量损失，伺服阀和其它阀不同的是，它的能量损失更大一些，因为它需要一定的流量来维持前置级控制油路的工作。武汉亿嘉隆机电设备有限公司电话027-87584899传真027-87688933袁荣1327791640618971564403刘菲扣扣752455694AA10VSO45DFR1/31R-PPA12N00(R910908725)AA10VSO71DFR1/31R-PPA12N00(R910944440)AA10VSO100DFR1/31R-PPA12N00(R910922744)VT17370-1X/(R900786020)PVV2-1X/068RA15DMB(R900935466)FD16FB2X/300B03V(R900504003)2FRM16-3X/100L(R900424905)4WREE6W08-2X/G24K31/A1V(R900923000)4WREE6W32-2X/G24K31/A1V(R900911004)4WREE6E08-2X/G24K31/A1V(R900912156)4WREE6E16-2X/G24K31/A1V(R900920567)4WREE6E32-2X/G24K31/A1V(R900907114)4WRTE25E220L-4X/6EG24K31/A1M(R900954281)DR30-5-5X/100YM(R900597260)DBDS30P1X/50(R900423716)伺服阀的主阀一般来说和换向阀一样是滑阀结构，只不过阀芯的换向不是靠电磁铁来推动，而是靠前置级阀输出的液压力来推动，这一点和电液换向阀比较相似，只不过电液换向阀的前置级阀是电磁换向阀，而伺服阀的前置级阀是动态特性比较好的喷嘴挡板阀或射流管阀。VT-VRPD-2-2X/V0/0-0-1(R901066987)4WRE10E75-2X/G24K4/V(R900954102)DBW10A2-5X/200-6EG24N9K4(R900926249)DBW10A2-5X/315-6EG24N9K4(R900926054)DBW20A2-5X/200-6EG24N9K4(R900939204)DBW20A2-5X/315-6EG24N9K4(R900921754)Z2S6-1-6X/(R900347495)Z2S10-1-3X/(R900407394)Z2S22-1-5X/(R900432915)Z2FS6-2-4X/2QV(R900481624)Z2FS10-5-3X/V(R900517812)AA10VSO10DR/52R-PPA14N00(R910990406)AA10VSO18DFR1/31R-PPA12N00(R910945178)AA10VSO28DFR1/31R-PPA12N00(R910910590)PV7-1X/10-14RE01MC0-16(R900580381)PV7-1X/10-20RE01MC0-10(R900534143)PV7-1X/16-20RE01MC0-16(R900580382)4WRAP6W7-04-2X/24K4/M(R900581366)4WRAP6W7-02-2X/24K4/M(R900581365)伺服阀其实缺点***：能耗浪费大、容易出故障、抗污染能力差、价格昂贵等等等等，好处只有一个：动态性能是所有液压阀中***高的。就凭着这一个优点，在很多对动态特性要求高的场合不得不使用伺服阀，如飞机火箭的舵机控制、汽轮机调速等等。动态要求低一点的，基本上都是比例阀的天下了。R9010770044WRTE35E1-1000L-4X/6EG24K31/A1MR900033823VT-VSPA1-1-1XR9009558873DREP6C-2X/25EG24N9K4/MR910920752AEA10VSO100DFR1/31R-PPA12N00R910999927AEA4VSO180DR/30R-PPB13N00R9009158142FRE16-43/160LBK4MR900703811VT-DFP-A-2X/G24KO/0/VR901088911PR4-3X/8,00-500RA01M01R900424288DBDS30K1X/315R900424286DBDS30K1X/200HMS02.1N-W0028N-07-NNNNHDS03.2-W100N-HSI2-01-FW08114048324WRBA10E64-2X/G24N9Z4/MR900912703LFA32E-7X/CA40DQMG24FR9012772674WRZM16W6-150-1X/6EG24N9ETK4/D3M4WREE10E75-2X/G24K31/F1V(R900927356)4WREE10W75-2X/G24K31/F1V(R900948360)R480060815DBEM10-7X/315YG24K4M(R901335399)Z4WE10X250-1X/CG24N9K4(R901291612)A10VSO100DFR1/32R-VSB12N00-S1439(R902450324)HCS02.1E-W0070-A-03-NNNNR9112983723DREPE6C-2X/25EG24N9K31/A1MR9009587883DREPE6C-2X/25EG24N9K31/F1MR9009588483DREPE6C-2X/25EG24N9K31/A1VR9009254840811404603,4WRPH6C3B40L-2X/G24K0/A1M伺服阀与比例阀的区别伺服阀与比例阀之间的差别并没有严格的规定，因为比例阀的性能越来越好，逐渐向伺服阀靠近，所以近些年出现了比例伺服阀。比例阀和伺服阀的区别主要体现在以下几点：1.驱动装置不同。比例阀的驱动装置是比例电磁铁；伺服阀的驱动装置是力马达或力矩马达；2.性能参数不同。滞环、中位死区、频宽、过滤精度等特性不同，因此应用场合不同，伺服阀和伺服比例阀主要应用在闭环控制系统，其它结构的比例阀主要应用在开环控系统及闭环速度控制系统；AA10VSO140DFR1/31R-VPB12N00(R910945253)AA4VSO355LR2G/30R-PPB13N00(R902411516)R9007723174WS2EM10-5X/60B11T315K31CV-114DBEM10-7X/50YG24K4M(R901335405)DBEM10-7X/100YG24K4M(R901335402)DBEM10-7X/200YG24K4M(R901335400)4WREE10E75-2X/G24K31/A1V(R900927230)3DR10P5-6X/200Y/00M(R900916660)4WRPEH6***B40L-2X/G24K0/A1M(0811404613)DREM10-6X/200YG24K4M(R901277137)4WRZE25W8-220-7X/6EG24N9ETK31/F1D3M(R900746375)AA4VSO180DFE1/30R-PPB13N00(R902430589)3FREZ6B-1X/35L2G24-27Z4MM(0811403114)VT-VRPA1-527-10/V0/QV(0811405098)DREBE6X-1X/75MG24K31F1M(R901084277)4WRPNH6C3B04L-2X/M/24PF6G(0811403559)VT-VPCD-1-1X/V0/1-P-1(R901089559)VT-HACF-1X/03,0/HACD&(R900776897)0532004204ZDBT-XP8-1X/315(0811104111)L***DB10E1X/(1818509231)LR25F40E1X/(1818509296)4WRL16V200M-3X/G24Z4/M(0811404207)4WREE6W16-2X/G24K31/A1V(R900925657)4WREE10W75-2X/G24K31/A1V(R900927233)AA10VSO45DFR1/31R-PPA12N00(R910908725)PGH5-3X/125RE11VU2(R901147118)H-4WMM16J7X/F(R900927809)Z2FS16-8-3X/S2(R900457256)Z2FS22-8-3X/S2(R900443176)AZPF-11-008RCB20MB(0510425009)AZPF-11-011RCB20MB(0510525009)SCA16BZ2X/M(R900425666)ZDC16P-2X/M(R900489668)ZDC25P-2X/M(R900344369)4WRPEH6C3B40L-2X/G24K0/F1M(0811404634)4WRPEH6***B40L-2X/G24K0/F1M(0811404353)AA4VSO71DR/10R-PPB13N00AA4VSO125DR/30R-PPB13N00AA4VSO180DR/30R-PPB13N00AA4VSO250DR/30R-PPB13N00AA10VSO45DR/31R-PPA12N00AA10VSO71DR/31R-PPA12N00AA10VSO100DR/31R-PPA12N00AA10VSO140DR/31R-PPB12N00AA10VSO71DRS/32R-VPB22U99AA10VSO100DRS/32R-VPB12N00AA10VSO140DRS/32R-VPB12N00R900052392,M-3SED6CK1X/350CG24N9K4R900052621,M-3SED6UK1X/350CG24N9K4R900566273,M-3SEW6C3X/420MG24N9K4R900566283,M-3SEW6U3X/420MG24N9K4M-3SED10UK1X/350CG24N9K4(R900051053)M-3SED10CK1X/350CG24N9K4(R900086685)4WREE6V1-32-2X/G24K31/A1V(R900914841)4WREE6E08-2X/G24K31/A1V-655(R900950341)4WREE6E16-2X/G24K31/A1V-655(R900950342)4WREE6E32-2X/G24K31/A1V-655(R900962181)4WRAE6E30-2X/G24K31/A1V(R900954071))