The utility model relates to a superhigh pressure direct action type transient equilibrium valve. The balanced valve includes valve body and valve end cover, is equipped with the combination packing ring between valve end cover and valve body, is equipped with case and spring, its characterized in that at the inner chamber of valve body: be close to one side of valve pocket at the valve end cover and seted up the case hole, the valve rod tail end of case inlays to be established at the case downtheholely, and the case is under operating condition not, and its awl is most advanced plugs up the valve port on the valve body, has seted up the dashpot at case awl pointed end, and the position that is close to the awl most advanced at the case is equipped with the case locating piece, the spring housing is established at the valve rod position of case, and comprises nested within each other's big, little spring, and wherein the external diameter of big spring is equal with the internal diameter of valve body inner chamber, and the internal diameter of little spring equals with the external diameter of valve plug stem portion. The utility model discloses shared space is little, and cracking pressure is high, long service life. Having and opening and close rapidly, the reliability is high, maintains functions such as simple and convenient.