产品详情
力士乐伺服阀4WRPEH6C3B02L-3X/M/24F1 现货伺服阀的目的就是：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。
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4WRAE10E30-2X/G24N9K31/VR
4WRAE10E30-2X/G24N9K31/A1V
4WRAE10E60-21/G24N9K31/A1V
4WRAEB6E30-22G24N9K31-A1V
4WRA10E40-12/24NZ4/M
4WRA 10 E60-2X/G24N9K4/V-589
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4WRPEH 10 C5B50L-2X/G24K0/F1M
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4WRDE 10 V100L-5X/6L24K9/M
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4WRDE 27 V1-500L-53/6L24K9/WG152MR
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4WREE10E75-22/G24K31/A1V+Z31
4WREE10V75-2X/G24K31/A1V
4WREE10W-50-2X/G24K31/F1V
4WREE6W32-2X/G24K31/F1V
4WREE 6 W32-20/G24K31/A1V=DE
4WRE10W64-1X/24Z4/M
4WRE 10 W75-2X/G24K4/V+Z4
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4WREE10W3-75-2X/G24K31/F1V
4WREE10W3-75-22/G24K31/F1V
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4WREE 6 V08-22/G24K31/A1V
4WREE 6 V16－20/G24K31/A1V
4WREE 6 V16-22/G24K31/A1V
4WREE10E-75-22/G24K31/A1V
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4WREE 10 V75-22/G24K31/A1V
4WREE10W1-25-2X/G24K31/F1/V
4WRKE 10 E100L-3X/6EG24ETK31/F1D3M
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4WRKE16W6-200P-31/6EG24EK31C1D3M
4WRKE 16 W125-21/6A24K9/D3MR
4WRKE 16 W6-125L-3X/6EG24K31/A5D3M
4WRKE 10 W8-100L-3X/6EG24ETK31/F1D3M
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4WRKE35-W8-1000L-3X/6EG24EK31/F1-D3M
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4WRPEH6C3B04L-2X/G24K0/F1M-885
4WRPEH6C3B12L-2X/G24KO/F1M
4WRPEH6C3B24L-20/G24KO/A1M
4WRPH 6 C3 B40L-2X/G24Z4/M
4WRPH 6 C4 B24L-2X/G24Z4/M
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4WRPEH6C4B12L-2X/G24K0/F1M
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4WRPH10C4B100L-2X/G24Z4/M
4WS2EM10-45/10B2ET315K8DM
4WS2EM10-5X/10B11ET315K8DV
4WS2EM10-5X/60B11ET315K31CV-114
4WSE3EE16-1X/200B8-315K9DVSO122
4WSE3EE-16-1X/200-B-8-315-K9-D-V-SO122
4WSE3EE 16-1X/200B9ET-210K9EV
4WSE3EE 32-4X/1000B9ET-210K9EV
4WRTE16-V1-125L-4X/6EG24EK31/F1M
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4WRZ10W6-25-7X/6EG24N9ETK4/D3M
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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。
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4WREE 10 V75-22/G24K31/A1V
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4WS2EM10-5X/60B11ET315K31CV-114
4WSE3EE16-1X/200B8-315K9DVSO122
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4WSE3EE 16-1X/200B9ET-210K9EV
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4WRZ10W6-50-7X/6EG24N9K4/V插头00074683/00074684带插头
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