Two and three-way pressure compensator fixed calibration of two or three ways to fixed calibration, made in the ISO 4401-07 modular version. It maintains the pressure fall (characteristic ∆P, 4 or 8 bar) between Via P and alternatively the streets A and B. is positioned under the directing direct action valves for proportional control to create independent flow controls from the pressure variations. The selection of the piloting pressure on the streets A and B takes place automatically by means of a two -way restoration valve, incorporated into the compensator.