Abstract: Proportional electromagnetic actuator comprising: a magnetic casing; an electromagnetic plunger movable relative to the casing and having a first axial half; a first radial gap and a second radial gap which are each formed radially between the plunger and the casing, and which are positioned axially at the first axial half of the plunger. These gaps (26; 28) are formed by concentric annular chamfers (32; 34). A three-way valve for turbojet oil, which is actuated by an electromagnetic actuator with double chamfered gaps.

Abstract: A fluid valve includes a valve member located between a first cavity and a second cavity, and an actuator that includes a pilot. The valve member is moved by the balance between the pressure prevailing in the first cavity and the pressure prevailing in the second cavity. The valve member includes a longitudinal hole that can be blocked by the pilot so as to modify the pressure prevailing in the first cavity and the force acting on the valve member so as to vary a fluid flow rate between an inlet and two outlets. The valve member is attached to a piston, one end of which is located in a third cavity. The force acting on the valve member is determined by the pressures prevailing in the various cavities.

Abstract: A fluid valve is suitable for use with a hydraulic circuit of an item of aircraft equipment. The fluid valve includes a valve body having one inlet, two outlets and a communication channel with an external pressure source. The fluid valve further includes an electric solenoid actuator located in the valve body and having a movable ferromagnetic pilot. A valve member is movable inside valve body to at least partially block a passage between said inlet and one of the two outlets. The valve member at least partially defines first and second cavities. A fixed limiter is disposed within the communication channel such that a displacement of the movable pilot causes a variation in pressure in one of the first and second cavities to produce a force for moving the valve member.

Abstract: A fluid valve includes a valve member located between a first cavity and a second cavity, and an actuator that includes a pilot. The valve member is moved by the balance between the pressure prevailing in the first cavity and the pressure prevailing in the second cavity. The valve member includes a longitudinal hole that can be blocked by the pilot so as to modify the pressure prevailing in the first cavity and the force acting on the valve member so as to vary a fluid flow rate between an inlet and two outlets. The valve member is attached to a piston, one end of which is located in a third cavity. The force acting on the valve member is determined by the pressures prevailing in the various cavities.

Abstract: The invention proposes a proportional electromagnetic actuator comprising: a magnetic casing; an electromagnetic plunger movable relative to the casing and having a first axial half; a first radial gap and a second radial gap which are each formed radially between the plunger and the casing, and which are positioned axially at the first axial half of the plunger. These gaps (26; 28) are formed by concentric annular chamfers (32; 34). The invention also proposes a three-way valve for turbojet oil, which is actuated by an electromagnetic actuator with double chamfered gaps.

Abstract: A fluid valve is suitable for use with a hydraulic circuit of an item of aircraft equipment. The fluid valve includes a valve body having one inlet, two outlets and a communication channel with an external pressure source. The fluid valve further includes an electric solenoid actuator located in the valve body and having a movable ferromagnetic pilot. A valve member is movable inside valve body to at least partially block a passage between said inlet and one of the two outlets. The valve member at least partially defines first and second cavities. A fixed limiter is disposed within the communication channel such that a displacement of the movable pilot causes a variation in pressure in one of the first and second cavities to produce a force for moving the valve member.