A gel valve comprising a main body, a secondary body, sealing elements, and a sealing containment device. The main body is fixedly connected to the secondary body, with the main body having a cavity and the secondary body having two cavities. The sealing elements are fixed between the main body and the secondary body. The rear end of the sealing containment device is fixed to the sealing elements, which, in conjunction with the sealing containment device, isolates the cavity in the main body from the two cavities in the secondary body. The secondary body is equipped with an inlet and an outlet for the gel, which are connected to the two cavities. The sealing containment device includes a storage cavity, which is in communication with the two cavities.