Manual butterfly valve

The utility model relates to a manual butterfly valve, including handle components, butterfly plate subassembly, left valve block, right valve block and chock plug, its characterized in that: a left side valve block with right side valve block mirror image contact sets up and forms to hollow structure's valve body, the butterfly plate subassembly by butterfly plate, last wear -resisting cover, down wear -resisting cover, go up the butterfly circle and down the butterfly circle constitute, butterfly plate upper end and lower extreme are the axis of rotation, the butterfly plate middle part is circular baffle, the butterfly plate is located between in the valve body, the butterfly plate middle part is located a left side valve block with in the valve block hollow structure of the right side,a left side valve block with the right side valve block locking of mutually supporting. The beneficial effects of the utility model are that: the leakproofness is good, simple structure, easy maintenance, durability are stro