Turbine comprising: - a stator comprising a central body comprising a chamber sealed by means of two covers, - an inlet duct for the entrance of a pressurized fluid inside the chamber of the stator, - an outlet duct for the exit of the pressurized fluid from the chamber of the stator, - two rotors arranged in said chamber of the stator; said rotors being mounted on shafts that are rotatably mounted in the stator in order to be driven into rotation by the pressurized fluid; - a synchronizer disposed outside the stator and connected to said shafts of the rotors in order to synchronize the rotation of the rotors, - an output shaft operatively connected to said shafts of the rotors so as to rotate following to the rotation of the shafts of the rotors; - a generator connected to said output shaft to produce electricity, wherein said rotors comprise teeth with prominences and slots generated between the teeth, and said rotors are arranged in said chamber of the stator with parallel axes of rotation, in such a way that during the rotation of the rotors, the prominences of a rotor enter the slots of the other rotor, without any contact between the teeth of the two rotors; wherein each cover has two recesses disposed in a central position and communicating with the chamber of the central body for a decompression and pressure equalization of the fluid inside the chamber; characterized in that each tooth of each rotor has a length corresponding to an extension in a direction parallel to the axis of rotation of the rotor; each recess of the cover has a depth (p) and the ratio of the length of the teeth of the rotor to the depth (p) of the recesses of the cover is 5.55 + 5% tolerance. - a stator comprising a central body comprising a chamber sealed by means of two covers, - an inlet duct for the entrance of a pressurized fluid inside the chamber of the stator, - an outlet duct for the exit of the pressurized fluid from the chamber of the stator, - two rotors arranged in said chamber of the stator; said rotors being mounted on shafts that are rotatably mounted in the stator in order to be driven into rotation by the pressurized fluid; - a synchronizer disposed outside the stator and connected to said shafts of the rotors in order to synchronize the rotation of the rotors, - an output shaft operatively connected to said shafts of the rotors so as to rotate following to the rotation of the shafts of the rotors; - a generator connected to said output shaft to produce electricity, wherein said rotors comprise teeth with prominences and slots generated between the teeth, and said rotors are arranged in said chamber of the stator with parallel axes of rotation, in such a way that during the rotation of the rotors, the prominences of a rotor enter the slots of the other rotor, without any contact between the teeth of the two rotors; wherein each cover has two recesses disposed in a central position and communicating with the chamber of the central body for a decompression and pressure equalization of the fluid inside the chamber; characterized in that each tooth of each rotor has a length corresponding to an extension in a direction parallel to the axis of rotation of the rotor; each recess of the cover has a depth (p) and the ratio of the length of the teeth of the rotor to the depth (p) of the recesses of the cover is 5.55 + 5% tolerance.