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微型电液比例先导阀具有体积小、重量轻、成本低、性能好等优点，作为先导间可与二级溢流阀、减压阀组成比例溢流阀、比例减压阀，也可以单独使用，控制小流量系统压力。１微型电－液比例先导阀的结构 目前，国内外常用的电液比例先导阀的结构有如下几种，如图１、图２、图３所
The miniature electro-hydraulic proportional pilot valve has the advantages of small size, light weight, low cost, good performance and other advantages. It can be used as a pilot pressure relief valve with proportional relief valve and proportional relief valve, and can also be used alone , Control of small flow system pressure. Structure of a miniature electro-hydraulic proportional pilot valve At present, the structure of the electro-hydraulic proportional pilot valve commonly used at home and abroad is as follows, as shown in Figure 1, Figure 2, Figure 3