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Ball valve is mainly used to cut off or connected to the line of medium, can be used for fluid regulation and control, which seal v-ball valve the V type ball core and the cladding alloy between the metal seat has a strong shear force, which is especially suitable for containing fiber, small solid particles and other media. Switch and multi way valve in the pipeline not only can flexibly control the media merging, diverging, and flow, but also can turn off any channel and the other two channels connected. this type of valve in the pipeline in general should be horizontal.