一、5位阀门装置:这种阀绪构坚固,进出口宽阔,直接作用。现已由英国伽利克多布森公司发展成为5位装置系统(见图1、2、3),已由各采煤国家采用。这种阀装置系统在单——双邻接控制及双——双邻接控制中,都具有很好的机动灵活性。因为这种阀可以加装自动控制的多通阀而组成一个可以进行双——双 First, the five valve device: This valve thread structure firm, broad import and export, a direct role. Now developed by the British Gialke Dobson company into a 5-bit device system (see Figure 1,2,3), has been adopted by the coal mining countries. This valve system has excellent maneuverability in single-dual contiguous control and dual-dual contiguous control. Because this valve can be equipped with automatic control of the multi-way valve can be composed of a double-double