A regulating valve for fluids for plants, in particular conditioning plants, comprising: at least a valve body exhibiting at least an inlet, at least an outlet and at least a channel which sets the inlet in fluid communication with the outlet, at least a fluid check element operating in the channel, the fluid check element defining, in cooperation with the valve body, a passage opening for fluid between the inlet and the outlet which has a variable size as a function of positions assumed by the check element in relation to the valve body along a predetermined operating path, the check organ being configured such as to rotate with respect to a rotation axis which extends transversally with respect to a prevalent development axis of the channel, at least a control device configured for: receiving in input at least a first signal relating to an intensity of a physical parameter of the fluid circulating in a first section of the plant and a second signal relating to the intensity of the physical parameter of a fluid circulating in the second section of the plant, generating an outlet signal as a function of the first signal and the second signal, the outlet signal being usable for controlling the angular position of the check element, and wherein the control device is configured such as to move the check element in a plurality of operating positions which are reciprocally angularly offset, wherein an angular step is defined between an operating position and an angularly subsequent operating position, the control device repeating the receiving and generating stages of receiving and generating in a predetermined number of the operating positions, optionally at each thereof, wherein the size of the angular step is a function of the intensity of the physical parameter of the fluid circulating in the first section and the intensity of the physical parameter of the fluid circulating in a second section of the plant, and wherein the angular step reduces progressively on reduction of a difference between a reference value and a real value given by a difference of intensity of the physical parameter of the fluid circulating in the first section and the intensity of the physical parameter of the fluid circulating in a second section. at least a valve body exhibiting at least an inlet, at least an outlet and at least a channel which sets the inlet in fluid communication with the outlet, at least a fluid check element operating in the channel, the fluid check element defining, in cooperation with the valve body, a passage opening for fluid between the inlet and the outlet which has a variable size as a function of positions assumed by the check element in relation to the valve body along a predetermined operating path, the check organ being configured such as to rotate with respect to a rotation axis which extends transversally with respect to a prevalent development axis of the channel, at least a control device configured for: receiving in input at least a first signal relating to an intensity of a physical parameter of the fluid circulating in a first section of the plant and a second signal relating to the intensity of the physical parameter of a fluid circulating in the second section of the plant, generating an outlet signal as a function of the first signal and the second signal, the outlet signal being usable for controlling the angular position of the check element, and wherein receiving in input at least a first signal relating to an intensity of a physical parameter of the fluid circulating in a first section of the plant and a second signal relating to the intensity of the physical parameter of a fluid circulating in the second section of the plant, generating an outlet signal as a function of the first signal and the second signal, the outlet signal being usable for controlling the angular position of the check element, and wherein the control device is configured such as to move the check element in a plurality of operating positions which are reciprocally angularly offset, wherein an angular step is defined between an operating position and an angularly subsequent operating position, the control device repeating the receiving and generating stages of receiving and generating in a predetermined number of the operating positions, optionally at each thereof, wherein the size of the angular step is a function of the intensity of the physical parameter of the fluid circulating in the first section and the intensity of the physical parameter of the fluid circulating in a second section of the plant, and wherein the angular step reduces progressively on reduction of a difference between a reference value and a real value given by a difference of intensity of the physical parameter of the fluid circulating in the first section and the intensity of the physical parameter of the fluid circulating in a second section.