Turbine comprising: - a stator comprising a central body comprising a chamber sealed by means of two covers , - an inlet duct (I) for the entrance of a pressurized fluid inside the chamber of the stator, - an outlet duct (O) 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 (G) 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 (P) 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 (P) 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 (I) for the entrance of a pressurized fluid inside the chamber of the stator, - an outlet duct (O) 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 (G) 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 (P) 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 (P) of the teeth of the rotor to the depth (p) of the recesses of the cover is 5.55 + 5% tolerance. <EOS>