液压滤芯应用在液压系统中，液压滤芯直接安装在油箱内，简化了系统的管路，节省空间，使系统布置更为紧凑。带有自封阀：检修系统时，油箱里的油液不会回流。更换液压滤芯时，能把液压滤芯内的污染物一同带出油箱，使油液不会外流。带有旁通阀：当液压滤芯被污染物堵塞导致压差达0．35MPa时，如不能马上更换液压滤芯，设在液压滤芯顶部的旁通阀会自动开启(其压差为0。4MPa)，以保护系统正常工作。带有磁性装置：可滤除回油油液中1LJm以上的铁磁性颗粒。
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