Valve special for chlorine gas

The utility model discloses a valve special for chlorine gas. The valve special for the chlorine gas not only reduces rate of internal leakage, but also prolongs service life of the valve. The valve special for the chlorine gas comprises a valve body, wherein a center hole is formed in the valve body and communicated with oil outlets in two sides of the valve body, a valve clack is arranged on the center hole of the valve body, a valve rod is connected with the valve clack through a valve clack parallel cap, the lower end of a bellows is integrally welded with the valve rod, the upper end of the bellows is integrally welded with a center hole of a sealing earthen bowl, the periphery of the sealing earthen bowl is matched with a sealing pad and arranged in a groove at the upper end of the valve body, a valve deck and the valve body are squeezed and tightly screwed up through a nut, the other seal except a packing seal is formed, a packing groove is formed at the upper end of the sealing earthen bowl, a platen