High-flow-rate gas exhausting valve

The invention relates to the technical field of pipeline valves, and particularly relates to a gas exhausting valve. A high-flow-rate gas exhausting valve is mounted on a pipeline and comprises a valve body and a valve cover, wherein the valve cover is arranged on the valve body. The high-flow-rate gas exhausting valve further comprises a floating ball; a valve chamber is formed in the valve body;an inlet through which medium flows inside is formed in the valve body and communicates with the valve chamber; an outlet through which the medium flows out is formed in the valve cover and communicates with the valve chamber; a floating ball is stored in the valve chamber, and the diameter of the floating ball is beyond the diameter of the inlet; and when the pipeline is not filled with liquid medium, the outer wall of the floating ball and the inner wall of the tail end of the inlet are arranged at an interval and form a primary damping channel. The high-flow-rate gas exhausting valve has the advantages that the wa