Buried welding anti-corrosion ball valve for fuel gas

The utility model discloses a buried welding anti-corrosion ball valve for fuel gas. The buried welding anti-corrosion ball valve comprises a protective shell, an input pipe, a first locking cover, afirst elastic jacket, an input hole, a first sealing ring, a protective cover, an air nozzle, a sleeve body, a spring, a transmission shaft, an end cover, a hand wheel, a piston, a limiting ring body,a second locking cover, a second elastic jacket, an output hole, an output pipe and a second sealing ring. According to the ball valve, the air tap is arranged, so that compressed air is convenientlyinput into the protective shell, external liquid is prevented from entering the protective shell, and the anti-corrosion effect of the ball valve body is improved; the spring and the piston are arranged, so that the storage effect of compressed air in the protection shell can be improved, and the long-time protection effect is improved; according to the ball valve, the input pipe is clamped and fixed through the first elas