Manual glasses valve body by the left or right body, valve plate, connecting shaft (3). With a special plate hand rotating connecting shaft, spiral pay driving around the body complete clamping and loosening action, use the blind plate and the hole position on the valve plate transformation purpose of opening and closing. It has a simple structure, light weight, reliable performance, convenient operation, etc. This valve for the structure of short series, rubber seal, respectively installed on the left, right on the valve body. The occasion of this valve is used for manual operation.