An automatic double-acting valve for high pressure pumps comprising: - a valve body , - a central duct of the pass-through type, which passes through the valve body and is equipped with a first opening made in a first end of the valve body and a second opening made in an opposite second end of the valve body , - a peripheral duct made in the valve body , eccentric with respect to the central duct and equipped with a first opening , made in a side surface of the valve body comprised between the first end and the second end , and a second opening made in the second end of the valve body , - a first blocking body movable at least between a closed position, in which it hermetically obstructs the first opening of the central duct , and an open position, in which it is spaced from the first opening of the central duct and allows the passage of flow through the first opening itself, - a first elastic element configured to generate a force adapted to keep the first blocking body in the closed position, - a second blocking body movable at least between a closed position, in which it hermetically obstructs the second opening of the peripheral duct , and an open position, in which it is spaced from the second opening of the peripheral duct and allows the passage of flow through the second opening itself, and - a second elastic element configured to generate a force adapted to keep the second blocking body in the closed position, characterized in that the valve body comprises a first portion equipped with the first opening of the central duct , a second portion equipped with the second opening of the central duct and the second opening of the peripheral duct , and a third portion interposed between the first portion and the second portion, which is equipped with the first opening of the peripheral duct and which is made of a material having a surface hardness lower than the material with which the first portion and second portion are made. - a valve body , - a central duct of the pass-through type, which passes through the valve body and is equipped with a first opening made in a first end of the valve body and a second opening made in an opposite second end of the valve body , - a peripheral duct made in the valve body , eccentric with respect to the central duct and equipped with a first opening , made in a side surface of the valve body comprised between the first end and the second end , and a second opening made in the second end of the valve body , - a first blocking body movable at least between a closed position, in which it hermetically obstructs the first opening of the central duct , and an open position, in which it is spaced from the first opening of the central duct and allows the passage of flow through the first opening itself, - a first elastic element configured to generate a force adapted to keep the first blocking body in the closed position, - a second blocking body movable at least between a closed position, in which it hermetically obstructs the second opening of the peripheral duct , and an open position, in which it is spaced from the second opening of the peripheral duct and allows the passage of flow through the second opening itself, and - a second elastic element configured to generate a force adapted to keep the second blocking body in the closed position, a first portion equipped with the first opening of the central duct , a second portion equipped with the second opening of the central duct and the second opening of the peripheral duct , and a third portion interposed between the first portion and the second portion, which is equipped with the first opening of the peripheral duct and which is made of a material having a surface hardness lower than the material with which the first portion and second portion are made. <EOS>