Magnetic coupling valve

The utility model relates to a magnetic coupling valve used in a fluid pipeline system. The magnetic coupling valve comprises a valve body, wherein the valve body is internally provided with a water inlet channel and a water outlet channel; a transitional water cavity is arranged between the water inlet channel and the water outlet channel; and a valve cover is arranged outside the transitional water cavity. The magnetic coupling valve is characterized in that the valve cover is a whole plate type sealing gland; a blind hole is arranged at the inner side of the center of the valve cover; a cylindrical boss is arranged at the outer side of the valve cover; an opening/closing part is arranged in the transitional water cavity, and the inner opening right faces the inner opening of the water inlet channel; the opening/closing pat is provided with a melon stand; the melon stand is provided with a thread blind hole; an axial guide structure is adopted to be matched the opening/closing part; a screw rod is arranged between the opening/closing part and the valve cover; an inner magnetic coupling body is fixedly arranged near the valve cover on the screw rod; and a knob of an outer magnetic coupling body is arranged at the outside of the valve cover. The magnetic coupling valve thoroughly solves the problems of sealing leakage and short service life of the existing various valves, has the flow regulatory function and can be widely applied in various fluid pipeline systems of water, gas and the like in industrial production and daily life.