Exhaust valve

The utility model discloses an exhaust valve. The utility model discloses an exhaust valve which comprises a valve body, a medium flow channel formed in the valve body, a valve deck detachably connected with one end of the valve body, a floater arranged between the valve body and the valve deck, an exhaust switch assembly matched with the floater and a valve element capable of closing the medium flow channel. The exhaust switch assembly comprises a rod body, a sealing piece, an exhaust piece detachably connected with the valve deck and an elastic piece used for connecting the exhaust piece andthe rod body, an exhaust hole is formed in the exhaust piece, and the sealing piece is detachably connected with the rod body through an inserting structure. According to the steam exhaust valve, thevalve element is arranged in the medium flow channel, when the steam exhaust valve needs to be overhauled, the valve element closes the medium flow channel, then the valve deck can be unscrewed to beoverhauled, and the mode i