Direct-acting electromagnetic valve for ultralow-temperature medium

The utility model provides a direct-acting electromagnetic valve for ultralow temperature medium, which comprises a valve body, a lengthened connecting pipe and a valve rod component, the valve body is provided with a valve cavity, a medium inlet and a medium outlet, the medium inlet and the medium outlet are communicated with the valve cavity, and the bottom of the valve cavity is provided with a pilot valve port used for being communicated with the medium outlet; the lower end of the lengthened connecting pipe is in threaded connection with the interior of the valve cavity, the upper end of the lengthened connecting pipe is in threaded connection with the magnetism isolating pipe assembly, and a medium flow channel communicated with the valve cavity is formed in the lengthened connecting pipe; the valve rod assembly comprises a movable iron core installed in the magnetism isolating pipe assembly in a sliding mode, a valve port sealing assembly arranged in the valve cavity and used for opening and closing th