Valve limiting device

The utility model belongs to the technical field of valves, and particularly relates to a limiting device of a valve. A limiting device of a valve comprises a valve body, the valve body is provided with a ball body, the ball body is provided with a through hole, and the ball body is connected with a valve rod. The valve body is provided with a polygonal hole, the valve rod is formed into a polygonmatched with the polygonal hole, and therefore the valve rod and the valve body can achieve rotation limiting at a certain angle. According to the utility model, the polygonal hole is matched with the polygonal valve rod; compared with an original method that a limiting block is additionally arranged, namely, limiting is achieved through cooperation of the limiting block and the valve rod, the structure is simplified, the structure is simpler and more stable, and meanwhile machining and installation are more convenient. 本实用新型属于阀门技术领域，特指一种阀门的限位装置。一种阀门的限位装置，包括阀体，所述阀体设置有球体，球体开设有通孔，所述球体连接有阀杆；所述阀体设置有多边形孔，所述阀杆成型为与多边形孔相配套的多