机械溢流阀
博世力士乐的限压阀将液压系统中的工作压力限制在机械设定值，防止其超压。
DB.10, 20, 30
公称尺寸 10…32
设备系列5X
最大工作压力 350 bar
最大体积流量 650 l/min
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