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目前,国内各厂家所生产的球形截止阀多为两位两通,只能在管路中对液流进行截止或开通,不能直接操纵液压执行元件(油缸)。
At present, domestic manufacturers of spherical globe valves are mostly two two-way, only in the pipeline on the flow of cut-off or opening, can not directly manipulate the hydraulic actuator (cylinder).