TIRE VALVE CAPABLE OF ENGAGING AND INFLATING AUTOMATICALLY

A tire valve is configured to inflate air into a tire via an inflation head, and the inflation head includes external threads, an internal diameter, and an external diameter. The tire valve contains a body with a first connection element and a second connection element. The first connection element includes an air feeding chamber, and the second connection element includes a connector, a stop ring, at least one movable retainer, and at least one return part. The connector includes a second fixing orifice, a conduit, and an air discharge chamber. The stop ring includes a through orifice, a second airtight sealing portion. The movable retainer is rotatably connected to the connector. The at least one return part is configured to abut against the movable retainer. The needle valve is received in the first connection element and the connector and includes a close portion, a post, and a locating rod.