Valve is used in ultra -low temperature filling

The utility model discloses a valve is used in ultra -low temperature filling, including the valve body and the case of setting in its inside that slide the valve body lower extreme is connected with the gland the inside spring that still is equipped with of valve body, the upper end of spring sets up on the case, the lower extreme setting of spring on the gland it has the primary seal pad that prevents low temperature and leak to inlay on the valve body the middle part of the outer peripheral face of case is equipped with the outer conical surface sealing structure with primary seal pad matched with. The utility model discloses it is sealed effectual, not only avoid the resource -wasting to still the effectual security performance that improves operating personnel can also guarantee that the case atress is even simultaneously, and difficult the emergence is leaked. 本实用新型公开了种超低温加注用阀门，包括阀体和滑动设置在其内部的阀芯，在所述阀体下端连接有压盖，在所述阀体内部还设有弹簧，所述弹簧的上端设置在阀芯上，所述弹簧的下端设置在压盖上，在所述阀体上镶嵌有防止低温泄漏的主密封垫，在所述阀芯的外周面的中部设有与主密封垫相配合的外锥面密封结构。本实用新