4WRZ25E1-325-7X/6EG24N9ETK4/M 力士乐比例阀是上海韦米机电设备有限公司主要经销产品之一,保证产品【原装正品】,价格优惠,货期短,发货快;常规产品现货供应,放心购买。我公司专业经营国外进口液压气动备件、自动化仪表;主营产品:液压配件、气动元件、柱塞泵、齿轮泵、叶片泵、电磁阀、节流阀、比例阀、溢流阀、换向阀、流量阀;伺服驱动器、伺服模块、伺服电机、探头、传感器、电缆、电源模块、编码器、接近开关等。常规型号产品现货供应,热诚欢迎新老客户来电咨询采购! 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,流量要么较大、要么较小,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。 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。 力士乐比例阀 4WRLE25V370M-3X/G24K0/A1M 力士乐比例阀 4WRLE25V430M-3XH/G24K0/A1M 力士乐比例阀 4WRLE25W350SJ-3X/G24EK0/A1WX02M-756 力士乐比例阀 4WRLE25W430SJ-3XH/G24K0/A1M 力士乐比例阀 4WRLE25W430SJ-3XH/G24K0/A1M-758 力士乐比例阀 4WRLE25WZ350SJ-3X/G24K0/A1M 力士乐比例阀 4WRLE25WZ350SJ-3X/G24K0/A1M-759 力士乐比例阀 4WRLE25WZ350SJ-3X/G24EK0/A1M-561 力士乐比例阀 4WRLE25W1-370M-3X/G24EK0/A1M-769 力士乐比例阀 4WRLE25W1-430M-3XH/G24EK0/A1M-769 力士乐比例阀 4WRLE25W1Z350SJ-3X/G24K0/A1M 力士乐比例阀 4WRLE25W3-350SJ-3X/G24EK0/A1WX02M-745 力士乐比例阀 4WRLE25W3-430SJ-3XH/G24EK0/A1WX02M-745 力士乐比例阀 4WRLE25W4-350SJ-3X/G24K0/A1M 力士乐比例阀 4WRLE25W4-350SJ-3X/G24K0/A1M-732 力士乐比例阀 4WRLE25W4-350SJ-3X/G24ETK0/A1M 力士乐比例阀 4WRLE25X370M-3X/G24K0/A1M-811 力士乐比例阀 4WRLE25X370M-3X/G24K0/A1M-812 力士乐比例阀 4WRLE25X370M-3X/G24ETK0/A1M-812 力士乐比例阀 4WRLE25X430M-3XH/G24K0/A1M-812 力士乐比例阀 4WRLE25X430SJ-3XH/G24EK0/A1WX02M-782 力士乐比例阀 4WRLE25EZ350SJ-3X/G24TK0/A1M 力士乐比例阀 4WRLE25Q4-430M-3XH/G24TK0/A1M 力士乐比例阀 4WRLE25Q5-370M-3X/G24K0/A1M 力士乐比例阀 4WRLE25W2Z350SJ-3X/G24K0/A1M 力士乐比例阀 4WRLE25W350SJ-3X/G24EK0/A1WX02M-745 力士乐比例阀 4WRLE25W430SJ-3XH/G24EK0/A1WX02M-744 力士乐比例阀 4WRLE25W430SJ-3XH/G24EK0/A1WX02M-746 力士乐比例阀 4WRLE25WZ350SJ-3X/G24EK0/A1WX02M-748 力士乐比例阀 4WRLE25WZ350SJ-3X/G24ETK0/A1WX02M-749 力士乐比例阀 4WRLE25WZ350SJ-3X/G24K0/A1M-758 力士乐比例阀 4WRLE25X370M-3X/G24EK0/A1M-812 力士乐比例阀 4WRLE32Q4-1000M-3X/G24TK0/A1M 力士乐比例阀 4WRLE32V1000M-3X/G24K0/A1M 力士乐比例阀 4WRLE32W1100SJ-3X/G24K0/A1M 力士乐比例阀 4WRLE32W1100SJ-3X/G24EK0/A1WX02M-744 力士乐比例阀 4WRLE32W5-600SJ-3X/G24EK0/A1WX02M-745 力士乐比例阀 4WRLE32W5-1100SJ-3X/G24EK0/A1WX02M-745 力士乐比例阀 4WRLE32X1000M-3X/G24K0/A1M-812 力士乐比例阀 4WRLE32X1000M-3X/G24EK0/A1M-812 力士乐比例阀 4WRLE32X500M-3X/G24EK0/A1M-812 力士乐比例阀 4WRLEM16W180SJ-3X/G24K0/A1M 力士乐比例阀 4WRLEM25EZ350SJ-3X/G24K0/A1M 力士乐比例阀 4WRP10E00S-1X/G24Z4/M-852 力士乐比例阀 4WRP10E32S-1X/G24Z4/M 力士乐比例阀 4WRP10E63S-1X/G24Z4/M 力士乐比例阀 4WRP10E63S-1X/G24Z4/M-850 力士乐比例阀 4WRP10E80S-1X/G24Z4/M-789 力士乐比例阀 4WRP10E1-63S-1X/G24Z4/M 力士乐比例阀 4WRP10EA16S-1X/G24Z4/M 力士乐比例阀 4WRP10EA32S-1X/G24Z4/M 力士乐比例阀 4WRP10EA32S-1X/G24Z4/M-792 力士乐比例阀 4WRP10EA32S-1X/G24Z4/M-793 力士乐比例阀 4WRP10EA32S-1X/G24Z4/M-796 力士乐比例阀 4WRP10EA63S-1X/G24Z4/M-792 力士乐比例阀 4WRP10EA63S-1X/G24Z4/M-795 力士乐比例阀 4WRP10EA63S-1X/G24Z4/M-850 力士乐比例阀 4WRP10EA63S-1X/G24Z4/M-851 力士乐比例阀 4WRP10KB130P-2X/G24Z4/M 力士乐比例阀 4WRP10W32S-1X/G24Z4/M-787 力士乐比例阀 4WRP10W32S-1X/G24Z4/M-849 力士乐比例阀 4WRP10W63S-1X/G24Z4/M 力士乐比例阀 4WRP10W63S-1X/G24Z4/M-788 力士乐比例阀 4WRP10W63S-1X/G24Z4/M-791 力士乐比例阀 4WRP10W1-63S-1X/G24Z4/M 力士乐比例阀 4WRP10X32S-1X/G24Z4/M-790 力士乐比例阀 4WRP6C3B02L-1X/G24Z4/M 力士乐比例阀 4WRP6E08S-1X/G24Z4/M-755 力士乐比例阀 4WRP6E16S-1X/G24Z4/M-755 力士乐比例阀 4WRP6E28S-1X/G24Z4/M 力士乐比例阀 4WRP6EA08S-1X/G24Z4/M-755 力士乐比例阀 4WRP6EA16S-1X/G24Z4/M-755 力士乐比例阀 4WRP6EA28S-1X/G24Z4/M 力士乐比例阀 4WRP6W06S-1X/G24Z4/M 力士乐比例阀 4WRP6W08S-1X/G24Z4/M-755 力士乐比例阀 4WRP6W14S-1X/G24Z4/M 力士乐比例阀 4WRP6W16S-1X/G24Z4/M-755 力士乐比例阀 4WRP6W28S-1X/G24Z4/M 力士乐比例阀 4WRPH6C1B40P-2X/G24Z4/M 力士乐比例阀 4WRPH6C3B04L-1X/G24Z4/M 力士乐比例阀 4WRPH6C3B12L-1X/G24Z4/M 力士乐比例阀 4WRPH6C3B12L-2X/G24K0/M-784 力士乐比例阀 4WRPH6C3B12L-2X/G24Z4/M-561 力士乐比例阀 4WRPH6C3B15P-2X/G24Z4/M 力士乐比例阀 4WRPH6C3B24L-1X/G24Z4/M 力士乐比例阀 4WRPH6C3B24L-2X/G24K0/M-784 力士乐比例阀 4WRPH6C3B24L-2X/G24Z4/M-561 力士乐比例阀 4WRPH6C3B25P-2X/G24Z4/M 力士乐比例阀 4WRPH6C3B40L-1X/G24Z4/M 力士乐比例阀 4WRPH6C3B40L-2X/G24K0/M-750 力士乐比例阀 4WRPH6C3B40L-2X/G24Z4/M-561 力士乐比例阀 4WRPH6C3B40P-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B04L-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B12L-1X/G24Z4/M 上海韦米机电设备有限公司位于浦东金桥是全国工业传动流体自动化领域实力较强的经销商,有着丰富的气动液压技术服务、工业销售及国际采购的经验,主营产品涉及液压泵阀(电磁阀、柱塞泵拳头产品)、工控产品、驱动模块、伺服电机、可编程控制器PLC、数控传动、传感器系列、电源、气动元件、工业仪器仪表。具体主要经营品牌及产品如下: 博世力士乐rexroth工业液压气动元件大量现货(电磁换向阀、节流阀、单向阀、比例阀、伺服阀、安全溢流阀、流量控制阀、减压阀、调节阀、压力继电器、比例放大板、放大器,轴向柱塞泵、叶片泵、齿轮泵,伺服驱动器、伺服电机,气动元件、气动阀、气缸等),部分系列型号: 电磁阀:4WE6、4WE10、4WE16;电液阀:4WEH10H、4WEH16、4WEH25, 单向阀:S10A、S20A、Z1S、Z2S、SL10、SL20、SV10、SV20、RVP,插装阀:LC、LFA 溢流阀:DB、DBW、DBET、DBD、ZDB、Z2DB,减压阀:DR6DP、DR10DP、ZDR6、ZDR10、DR-4X、DR-5X 节流阀:Z2FS6、Z2FS10、Z2FS16、Z2FS22;调速阀:2FRM5、2FRM10、2FRM16, 平衡阀:FD12FA、FD12PA、FD12KA、FD16FA,继电器:HED80、HED40,电子单元:VT、0811 比例方向阀:4WRA、4WRAE、4WRE、4WREE、4WREEM、4WRH、4WRZ、4WRZE、4WRKE、4WRBKE、4WS2EM 高频响方向阀:4WRPH、4WRPEH、5WRP、5WRPE、4WRREH、4WRP、4WRPE、4WRP(E)H、4WRSE、4WRSEH、4WRPNH、4WRL、4WRLE、4WRVE、4WRGE、4WRL、4WRLE、4WRDE、3WRCBH,伺服系统:HAS、HNL、HCS、HNL 柱塞泵:A4VSO、A10VSO、A2FO,定量马达:A2FM,A4FM,A10FM/E, 齿轮泵:0510、AZPF,叶片泵:PV7 意大利阿托斯ATOS及迪普马DUPLOMATIC、美国Parker派克及EATON VICKERS伊顿 威格士液压、日本YUKEN油研泵阀优势现货系列(电磁阀换向阀、压力开关、柱塞泵、齿轮泵、比例阀、截止阀、开关阀等), 奥地利贝加莱B&R br-automation自动化配品配件货期短现货多(伺服驱动器、触摸屏、工控机、CPU模块、总线控制器、X20\2003\2005\2010系统中各类功能模块等), 美国本特利(Bently Nevada)优势系列(监测模块、前置器、仪表框架、接口模块、延伸电缆、传感器探头、转速表、校验仪等) 西门子Siemens优势主打系列(6SN、6FC、6FX、S7200、电机1FK、S7300、S7400、LOGO 低压电器、软启、熔断器、电源模块、CPU、数控传动) 另销售有德国爱尔泰克Airtec气动元件,APS接近开关,SMC气动元件,倍加福编码器、传感器,欧姆龙低压电器、川崎K3V泵 ,贺德克液压元件、丹佛斯、费斯托全系列产品. 力士乐比例阀 4WRPH6C4B12L-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B15P-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B24L-2X/G24K0/M-750 力士乐比例阀 4WRLE25X370M-3X/G24K0/A1M-812 力士乐比例阀 4WRLE25X370M-3X/G24ETK0/A1M-812 力士乐比例阀 4WRLE25X430M-3XH/G24K0/A1M-812 力士乐比例阀 4WRLE25X430SJ-3XH/G24EK0/A1WX02M-782 力士乐比例阀 4WRLE25EZ350SJ-3X/G24TK0/A1M 力士乐比例阀 4WRLE25Q4-430M-3XH/G24TK0/A1M 力士乐比例阀 4WRLE25Q5-370M-3X/G24K0/A1M 力士乐比例阀 4WRLE25W2Z350SJ-3X/G24K0/A1M 力士乐比例阀 4WRLE25W350SJ-3X/G24EK0/A1WX02M-745 力士乐比例阀 4WRLE25W430SJ-3XH/G24EK0/A1WX02M-744 力士乐比例阀 4WRLE25W430SJ-3XH/G24EK0/A1WX02M-746 力士乐比例阀 4WRLE25WZ350SJ-3X/G24EK0/A1WX02M-748 力士乐比例阀 4WRLE25WZ350SJ-3X/G24ETK0/A1WX02M-749 力士乐比例阀 4WRLE25WZ350SJ-3X/G24K0/A1M-758 力士乐比例阀 4WRLE25X370M-3X/G24EK0/A1M-812 力士乐比例阀 4WRLE32Q4-1000M-3X/G24TK0/A1M 力士乐比例阀 4WRLE32V1000M-3X/G24K0/A1M 力士乐比例阀 4WRLE32W1100SJ-3X/G24K0/A1M 力士乐比例阀 4WRLE32W1100SJ-3X/G24EK0/A1WX02M-744 力士乐比例阀 4WRLE32W5-600SJ-3X/G24EK0/A1WX02M-745 力士乐比例阀 4WRLE32W5-1100SJ-3X/G24EK0/A1WX02M-745 力士乐比例阀 4WRLE32X1000M-3X/G24K0/A1M-812 力士乐比例阀 4WRLE32X1000M-3X/G24EK0/A1M-812 力士乐比例阀 4WRLE32X500M-3X/G24EK0/A1M-812 力士乐比例阀 4WRLEM16W180SJ-3X/G24K0/A1M 力士乐比例阀 4WRLEM25EZ350SJ-3X/G24K0/A1M 力士乐比例阀 4WRP10E00S-1X/G24Z4/M-852 力士乐比例阀 4WRP10E32S-1X/G24Z4/M 力士乐比例阀 4WRP10E63S-1X/G24Z4/M 力士乐比例阀 4WRP10E63S-1X/G24Z4/M-850 力士乐比例阀 4WRP10E80S-1X/G24Z4/M-789 力士乐比例阀 4WRP10E1-63S-1X/G24Z4/M 力士乐比例阀 4WRP10EA16S-1X/G24Z4/M 力士乐比例阀 4WRP10EA32S-1X/G24Z4/M 力士乐比例阀 4WRP10EA32S-1X/G24Z4/M-792 力士乐比例阀 4WRP10EA32S-1X/G24Z4/M-793 力士乐比例阀 4WRP10EA32S-1X/G24Z4/M-796 力士乐比例阀 4WRP10EA63S-1X/G24Z4/M-792 力士乐比例阀 4WRP10EA63S-1X/G24Z4/M-795 力士乐比例阀 4WRP10EA63S-1X/G24Z4/M-850 力士乐比例阀 4WRP10EA63S-1X/G24Z4/M-851 力士乐比例阀 4WRP10KB130P-2X/G24Z4/M 力士乐比例阀 4WRP10W32S-1X/G24Z4/M-787 力士乐比例阀 4WRP10W32S-1X/G24Z4/M-849 力士乐比例阀 4WRP10W63S-1X/G24Z4/M 力士乐比例阀 4WRP10W63S-1X/G24Z4/M-788 力士乐比例阀 4WRP10W63S-1X/G24Z4/M-791 力士乐比例阀 4WRP10W1-63S-1X/G24Z4/M 力士乐比例阀 4WRP10X32S-1X/G24Z4/M-790 力士乐比例阀 4WRP6C3B02L-1X/G24Z4/M 力士乐比例阀 4WRP6E08S-1X/G24Z4/M-755 力士乐比例阀 4WRP6E16S-1X/G24Z4/M-755 力士乐比例阀 4WRP6E28S-1X/G24Z4/M 力士乐比例阀 4WRP6EA08S-1X/G24Z4/M-755 力士乐比例阀 4WRP6EA16S-1X/G24Z4/M-755 力士乐比例阀 4WRP6EA28S-1X/G24Z4/M 力士乐比例阀 4WRP6W06S-1X/G24Z4/M 力士乐比例阀 4WRP6W08S-1X/G24Z4/M-755 力士乐比例阀 4WRP6W14S-1X/G24Z4/M 力士乐比例阀 4WRP6W16S-1X/G24Z4/M-755 力士乐比例阀 4WRP6W28S-1X/G24Z4/M 力士乐比例阀 4WRPH6C1B40P-2X/G24Z4/M 力士乐比例阀 4WRPH6C3B04L-1X/G24Z4/M 力士乐比例阀 4WRPH6C3B12L-1X/G24Z4/M 力士乐比例阀 4WRPH6C3B12L-2X/G24K0/M-784 力士乐比例阀 4WRPH6C3B12L-2X/G24Z4/M-561 力士乐比例阀 4WRPH6C3B15P-2X/G24Z4/M 力士乐比例阀 4WRPH6C3B24L-1X/G24Z4/M 力士乐比例阀 4WRPH6C3B24L-2X/G24K0/M-784 力士乐比例阀 4WRPH6C3B24L-2X/G24Z4/M-561 力士乐比例阀 4WRPH6C3B25P-2X/G24Z4/M 力士乐比例阀 4WRPH6C3B40L-1X/G24Z4/M 力士乐比例阀 4WRPH6C3B40L-2X/G24K0/M-750 力士乐比例阀 4WRPH6C3B40L-2X/G24Z4/M-561 力士乐比例阀 4WRPH6C3B40P-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B04L-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B12L-1X/G24Z4/M 力士乐比例阀 4WRPH6C4B12L-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B15P-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B24L-2X/G24K0/M-750 力士乐比例阀 4WRPH6C4B24L-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B25P-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B40L-2X/G24K0/M-750 力士乐比例阀 4WRPH6C4B40P-2X/G24Z4/M 力士乐比例阀 4WRPH6KB50L-2X/G24Z4/M 力士乐比例阀 4WRPH6KB50P-2X/G24Z4/M 力士乐比例阀 4WRPH6XB12L-2X/G24K0/M-843 力士乐比例阀 4WRPH6XB12L-2X/G24Z4/M-842 力士乐比例阀 4WRPH6XB24L-2X/G24Z4/M-842 力士乐比例阀 4WRPH6XB40L-2X/G24Z4/M-842 力士乐比例阀 4WRPH10C1B50P-2X/G24Z4/M 力士乐比例阀 4WRPH10C1B100L-2X/G24K0/M-750 力士乐比例阀 4WRPH10C1B100P-2X/G24K0/M-750 力士乐比例阀 4WRPH10C1B100P-2X/G24Z4/M 力士乐比例阀 4WRPH10C3B50L-2X/G24Z4/M 力士乐比例阀 4WRPH10C3B100L-2X/G24Z4/M 力士乐比例阀 4WRPH10C3B100P-2X/G24Z4/M 力士乐比例阀 4WRPH10C3B120L-2X/G24Z4/M 力士乐比例阀 4WRPH10C4B50L-2X/G24Z4/M 力士乐比例阀 4WRPH10C4B50P-2X/G24Z4/M 力士乐比例阀 4WRPH10C4B100L-2X/G24K0/M-750 力士乐比例阀 4WRPH10C4B100L-2X/G24Z4/M 力士乐比例阀 4WRPH10C4B100P-2X/G24K0/M-750 力士乐比例阀 4WRPH10C4B100P-2X/G24Z4/M 力士乐比例阀 4WRPE10CB80L-2X/G24K0/F1M-810 力士乐比例阀 4WRPE10CB80M-2X/G24K0/A1M-846 力士乐比例阀 4WRPE10CB130P-2X/G24K0/B5M 力士乐比例阀 4WRPE10E50SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10E80SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10E80SJ-2X/G24K0/A1M-732 力士乐比例阀 4WRPE10E1-80SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10EA50SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10EA80SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10EA80SJ-2X/G24K0/A1M-797 力士乐比例阀 4WRPE10KB00L-2X/G24K0/A1M-845 力士乐比例阀 4WRPE10Q5-50M-2X/G24K0/A1M-836 力士乐比例阀 4WRPE10R3-80SJ-2X/G24K0/A1M-786 力士乐比例阀 4WRPE10R580P-2X/G24K0/A1M-838 力士乐比例阀 4WRPE10V80M-2X/G24K0/A1M-837 力士乐比例阀 4WRPE10W50SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10W50SJ-2X/G24K0/F1M 力士乐比例阀 4WRPE10W80SJ-2X/G24K0/A1M-732 力士乐比例阀 4WRPE10W80SJ-2X/G24K0/B5M 力士乐比例阀 4WRPE10W1-80SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6E18SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6E18SJ-2X/G24K0/F1M 力士乐比例阀 4WRPE6E32SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6E32SJ-2X/G24K0/A1M-732 力士乐比例阀 4WRPE6E32SJ-2X/G24K0/F1M 力士乐比例阀 4WRPE6EA18SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6EA32SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6Q5-18M-2X/G24K0/A1M-836 力士乐比例阀 4WRPE6Q5-32M-2X/G24K0/A1M-836 力士乐比例阀 4WRPE6R532M-2X/G24K0/A1M-838 力士乐比例阀 4WRPE6W08SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6W18SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6W32SJ-2X/G24K0/A1M-732 力士乐比例阀 4WRPE6W32SJ-2X/G24K0/B5M 力士乐比例阀 4WRPE6X32M-2X/G24K0/B5M-833 力士乐比例阀 4WRPE10CB80L-2X/G24K0/A1M 力士乐比例阀 4WRPE10E80SJ-2X/G24K0/A1M-785 力士乐比例阀 4WRPE10Q5-80M-2X/G24K0/A1M-836 力士乐比例阀 4WRPE6E08SJ-2X/G24K0/A1M 力士乐比例阀 4WRPEH6CB04L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6CB24L-2X/G24K0/B5M 力士乐比例阀 4WRPEH6CB40L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6CB40L-2X/G24K0/F1M 力士乐比例阀 4WRPEH6C1B40L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B02L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B04L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B04L-2X/G24K0/B5M 力士乐比例阀 4WRPEH6C3B04L-2X/G24K0/F1M 力士乐比例阀 4WRPEH6C3B12L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B12L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B12L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B12L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B15P-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B15P-2X/G24K0/B5M 力士乐比例阀 4WRPEH6C3B24L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B24L-2X/G24K0/A1M 力士乐比例阀 4WRPH6C4B24L-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B25P-2X/G24Z4/M 力士乐比例阀 4WRPH6C4B40L-2X/G24K0/M-750 力士乐比例阀 4WRPH6C4B40P-2X/G24Z4/M 力士乐比例阀 4WRPH6KB50L-2X/G24Z4/M 力士乐比例阀 4WRPH6KB50P-2X/G24Z4/M 力士乐比例阀 4WRPH6XB12L-2X/G24K0/M-843 力士乐比例阀 4WRPH6XB12L-2X/G24Z4/M-842 力士乐比例阀 4WRPH6XB24L-2X/G24Z4/M-842 力士乐比例阀 4WRPH6XB40L-2X/G24Z4/M-842 力士乐比例阀 4WRPH10C1B50P-2X/G24Z4/M 力士乐比例阀 4WRPH10C1B100L-2X/G24K0/M-750 力士乐比例阀 4WRPH10C1B100P-2X/G24K0/M-750 力士乐比例阀 4WRPH10C1B100P-2X/G24Z4/M 力士乐比例阀 4WRPH10C3B50L-2X/G24Z4/M 力士乐比例阀 4WRPH10C3B100L-2X/G24Z4/M 力士乐比例阀 4WRPH10C3B100P-2X/G24Z4/M 力士乐比例阀 4WRPH10C3B120L-2X/G24Z4/M 力士乐比例阀 4WRPH10C4B50L-2X/G24Z4/M 力士乐比例阀 4WRPH10C4B50P-2X/G24Z4/M 力士乐比例阀 4WRPH10C4B100L-2X/G24K0/M-750 力士乐比例阀 4WRPH10C4B100L-2X/G24Z4/M 力士乐比例阀 4WRPH10C4B100P-2X/G24K0/M-750 力士乐比例阀 4WRPH10C4B100P-2X/G24Z4/M 力士乐比例阀 4WRPE10CB80L-2X/G24K0/F1M-810 力士乐比例阀 4WRPE10CB80M-2X/G24K0/A1M-846 力士乐比例阀 4WRPE10CB130P-2X/G24K0/B5M 力士乐比例阀 4WRPE10E50SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10E80SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10E80SJ-2X/G24K0/A1M-732 力士乐比例阀 4WRPE10E1-80SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10EA50SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10EA80SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10EA80SJ-2X/G24K0/A1M-797 力士乐比例阀 4WRPE10KB00L-2X/G24K0/A1M-845 力士乐比例阀 4WRPE10Q5-50M-2X/G24K0/A1M-836 力士乐比例阀 4WRPE10R3-80SJ-2X/G24K0/A1M-786 力士乐比例阀 4WRPE10R580P-2X/G24K0/A1M-838 力士乐比例阀 4WRPE10V80M-2X/G24K0/A1M-837 力士乐比例阀 4WRPE10W50SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE10W50SJ-2X/G24K0/F1M 力士乐比例阀 4WRPE10W80SJ-2X/G24K0/A1M-732 力士乐比例阀 4WRPE10W80SJ-2X/G24K0/B5M 力士乐比例阀 4WRPE10W1-80SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6E18SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6E18SJ-2X/G24K0/F1M 力士乐比例阀 4WRPE6E32SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6E32SJ-2X/G24K0/A1M-732 力士乐比例阀 4WRPE6E32SJ-2X/G24K0/F1M 力士乐比例阀 4WRPE6EA18SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6EA32SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6Q5-18M-2X/G24K0/A1M-836 力士乐比例阀 4WRPE6Q5-32M-2X/G24K0/A1M-836 力士乐比例阀 4WRPE6R532M-2X/G24K0/A1M-838 力士乐比例阀 4WRPE6W08SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6W18SJ-2X/G24K0/A1M 力士乐比例阀 4WRPE6W32SJ-2X/G24K0/A1M-732 力士乐比例阀 4WRPE6W32SJ-2X/G24K0/B5M 力士乐比例阀 4WRPE6X32M-2X/G24K0/B5M-833 力士乐比例阀 4WRPE10CB80L-2X/G24K0/A1M 力士乐比例阀 4WRPE10E80SJ-2X/G24K0/A1M-785 力士乐比例阀 4WRPE10Q5-80M-2X/G24K0/A1M-836 力士乐比例阀 4WRPE6E08SJ-2X/G24K0/A1M 力士乐比例阀 4WRPEH6CB04L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6CB24L-2X/G24K0/B5M 力士乐比例阀 4WRPEH6CB40L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6CB40L-2X/G24K0/F1M 力士乐比例阀 4WRPEH6C1B40L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B02L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B04L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B04L-2X/G24K0/B5M 力士乐比例阀 4WRPEH6C3B04L-2X/G24K0/F1M 力士乐比例阀 4WRPEH6C3B12L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B12L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B12L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B12L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B15P-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B15P-2X/G24K0/B5M 力士乐比例阀 4WRPEH6C3B24L-2X/G24K0/A1M 力士乐比例阀 4WRPEH6C3B24L-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C3B24L-2X/G24K0/B5M Rexroth比例阀 4WRPEH6C3B24L-2X/G24K0/F1M Rexroth比例阀 4WRPEH6C3B25P-2X/G24K0/B5M Rexroth比例阀 4WRPEH6C3B40L-2X/G24K0/B5M Rexroth比例阀 4WRPEH6C3B40L-2X/G24K0/F1M Rexroth比例阀 4WRPEH6C3B40P-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C3B40P-2X/G24K0/B5M Rexroth比例阀 4WRPEH6C4B02L-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C4B04L-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C4B04L-2X/G24K0/F1M Rexroth比例阀 4WRPEH6C4B12L-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C4B12L-2X/G24K0/B5M Rexroth比例阀 4WRPEH6C4B12L-2X/G24K0/F1M Rexroth比例阀 4WRPEH6C4B15P-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C4B24L-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C4B24L-2X/G24K0/F1M Rexroth比例阀 4WRPEH6C4B25P-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C4B40L-2X/G24K0/A1M Rexroth比例阀 4WRPEH6C4B40L-2X/G24K0/A1V Rexroth比例阀 4WRPEH6C4B40L-2X/G24K0/F1M 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。 也就是说,伺服阀的主阀是靠前置级阀的输出压力来控制的,而前置级阀的压力则来自于伺服阀的入口p,假如p口的压力不足,前置级阀就不能输出足够的压力来推动主阀芯动作。 而我们知道,当负载为零的时候,如果四通滑阀完全打开,p口压力=t口压力+阀口压力损失(忽略油路上的其它压力损失),如果阀口压力损失很小,t口压力又为零,那么p口的压力就不足以供给前置级阀来推动主阀芯,整个伺服阀就失效了。所以伺服阀的阀口做得偏小,即使在阀口全开的情况下,也要有一定的压力损失,来维持前置级阀的正常工作。 伺服阀其实缺点较多: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较高的。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。 一般说来,好像伺服系统都是闭环控制,比例多用于开环控制;其次比例阀类型要多,有比例压力、流量控制阀等,控制比伺服要灵活一些。从他们内部结构看,伺服阀多是零遮盖,比例阀则有一定的死区,控制精度要低,响应要慢。但从发展趋势看,特别在比例方向流量控制阀和伺服阀方面,两者性能差别逐渐在缩小,另外比例阀的成本比伺服阀要低许多,抗污染能力也强!