A valve extending along a horizontal direction, comprising • a valve seat; • a valve core, the valve core being inserted into the valve seat along a first horizontal direction and in limiting fit with the valve seat in any vertical direction, and the valve core being provided with at least one water inlet channel and at least one water outlet channel; and • a plurality of first connectors corresponding to each water channel of the valve core, the plurality of first connectors being inserted into the valve seat along a vertical direction and in clamping fit with the valve seat, and the plurality of first connectors being respectively inserted into and in sealing fit with the corresponding water channels so as to lead water flow into or out of the valve core, • the valve seat being provided with a plurality of clamping holes for the plurality of first connectors to be inserted into and in inserting fit with; and the plurality of first connectors have clamping portions, the clamping portions being suitable for being in elastic clamping fit with the clamping holes when the plurality of first connectors are inserted into the clamping holes, so as to achieve the clamping fit between the plurality of first connectors and the valve seat, • characterized in that axial limiting portions are being arranged at the tail ends of the clamping holes along inserting directions of the plurality of first connectors, and the clamping portions are formed by a plurality of elastic clamping claws which are arranged symmetrically along circumferential directions of the plurality of first connectors; and • the plurality of elastic clamping claws are inserted into the plurality of clamping holes and contract inwards while being urged against by inner walls of the plurality of clamping holes, and the plurality of elastic clamping claws are released to expand outwards while moving to the axial limiting portions and are in position-limiting fit with the axial limiting portions along axial directions of the plurality of clamping holes. • a valve seat; • a valve core, the valve core being inserted into the valve seat along a first horizontal direction and in limiting fit with the valve seat in any vertical direction, and the valve core being provided with at least one water inlet channel and at least one water outlet channel; and • a plurality of first connectors corresponding to each water channel of the valve core, the plurality of first connectors being inserted into the valve seat along a vertical direction and in clamping fit with the valve seat, and the plurality of first connectors being respectively inserted into and in sealing fit with the corresponding water channels so as to lead water flow into or out of the valve core, • the valve seat being provided with a plurality of clamping holes for the plurality of first connectors to be inserted into and in inserting fit with; and the plurality of first connectors have clamping portions, the clamping portions being suitable for being in elastic clamping fit with the clamping holes when the plurality of first connectors are inserted into the clamping holes, so as to achieve the clamping fit between the plurality of first connectors and the valve seat, • characterized in that axial limiting portions are being arranged at the tail ends of the clamping holes along inserting directions of the plurality of first connectors, and the clamping portions are formed by a plurality of elastic clamping claws which are arranged symmetrically along circumferential directions of the plurality of first connectors; and • the plurality of elastic clamping claws are inserted into the plurality of clamping holes and contract inwards while being urged against by inner walls of the plurality of clamping holes, and the plurality of elastic clamping claws are released to expand outwards while moving to the axial limiting portions and are in position-limiting fit with the axial limiting portions along axial directions of the plurality of clamping holes.