Sanitary check valve

The utility model discloses a sanitary check valve, which comprises a valve body, a valve core and a valve core, the valve body is provided with an inlet end and an outlet end. The ball body is arranged in the valve body and can slide; the ball body is provided with a first position and a second position corresponding to the valve body; when the pressure of the inlet end is greater than that of the outlet end, the ball moves from the first position to the second position for opening the valve body; when the pressure of the inlet end is smaller than that of the outlet end, the ball moves from the second position to the second position for closing the valve body; an angle alpha formed by a linear distance line segment corresponding to the moving track of the ball body and the longitudinal plane is greater than 0 and less than 90 degrees. The sanitary check valve has the advantages of being simple in structure, easy to clean and high in flow coefficient. 本实用新型公开了一种卫生级止回阀，包括：阀体；阀体分别设置有进口端与出口端；设置于阀体内部可滑移的球体；球体对应阀体