Attenuation device for the fluid flow pulsation in a hydraulic circuit connected with a hydraulic machine

An attenuation device for a fluid flow pulsation along a duct of a hydraulic circuit connected with a hydraulic machine, comprising at least an attenuation module passed through by a pass-through duct configured to be placed in fluid communication with said duct of said hydraulic circuit, wherein in said attenuation module a first duct is obtained having an opened first end in fluid communication with said pass-through duct, and a closed second end, said first duct extending between said opened first end and said closed second end along a curved line comprising a plurality of curved sections, wherein at least two curved sections of said first duct are separated from one another by a shared separation wall configured to be compliant towards a pressure difference between a first section and a second section of said at least two curved sections separated by said shared separation wall, said first duct being adapted to attenuate the pulsation of said fluid flow along said duct of said hydraulic circuit to reduce the vibrations generated by said pulsation of said fluid flow.