The pressure controlling electromagnetic valve comprises an electric sub-assembly (1) provided with a coil (3) and the yoke thereof (4) associated with a hydraulic sub-assembly (2) provided with a seat (7), which a conduit (9) connecting two high and low-pressure fluid circuits (10, 11), respectively, passes through, sealing means (8) of said conduit (9), a pusher (12) sliding in a pole piece (19) and actuating said sealing means (8), a movable core (13) which is connected to the pusher (12) and whose displacement is controlled by the coil (3), wherein said electric (1) and hydraulic (2) sub-assembly form two distinct unit blocks. Said blocks are rotatably mounted with respect to each other by assembling the hydraulic block (2) in the conduit, which passes through the electromagnetic block (1), a locking washer (23) is arranged on an end of the conduit for preventing any axial displacement of the hydraulic block (2) in one direction and a shoulder (27) is arranged on the other end of said conduit for preventing the displacement of said hydraulic bloc (2) in the other direction by contacting the limit stop (18) thereof and a elastic washer (26) is inserted between the shoulder (27) and the limit stop (18).