Aerating valve

The utility model relates to an aerating valve, including have into, the valve body of gas outlet, be equipped with the intercommunication on the valve body advance, the fluid passage of gas outlet, be equipped with the disk seat on the valve body, correspond among the fluid passage to be equipped with and be used for corresponding the sealed case that cooperates in order to close fluid passage with the disk seat, among the fluid passage in the orientation of case one side of gas outlet is equipped with the post -filtration structure. To pass through by the gas of fluid passage flow direction gas outlet and could export through the gas outlet after the post -filtration structure is filtered, effectually avoid sneaking into gaseous impurity and follow gas and together get into in subsequent pressure relief device or the gas cylinder. And the post -filtration structure of this kind of postposition can form the buffering and decelerating to gas when filtering gas, avoid the high -speed gas that flows through to