Novel dual -gate valve

The utility model relates to a novel dual -gate valve, including valve body, valve gap, flashboard, valve rod, valve body inner chamber system has the sealed face of mutually supporting with the flashboard, and the flashboard comprises left flashboard and right flashboard, mainly be that left flashboard and right flashboard adopt two semi -rings to detain mutually to link together, the system is jagged between two semi -rings of left flashboard and right flashboard, and this breach lies in valve rod central line vertical direction, and wherein the breach radian on the flashboard of one side is greater than the semi -ring radian on the opposite side flashboard, at up end along the two flashboard faying face directions installation locating piece of left flashboard and right flashboard, this locating piece is by the up end of valve rod pressure equipment at left flashboard and right flashboard. Its connection structure is simple, and is small, and the flashboard is connected reliably, and job stabilization nature is good.