Abstract: A discharge valve for an aircraft includes a cylindrical body having an inlet and an outlet, a first valve, and a second valve arranged inside the body. The first and the second valves are rotatable around a first axle and a second axle, respectively, between a closed position and an open position. A mechanism for locking the second valve in the closed position includes a control lever arranged around a third axle, an interface arranged on the second valve, and a device for rotating the third axle. The control lever is rotatably movable around the third axle between an unlocking position, in which the interface is in abutment against the drive device, and a locking position, in which the interface is engaged in the drive device.

Abstract: A magnetic head for a magnetic detector for detecting metal particles in a hydraulic circuit includes an axial body internally including at least one magnet, at least a first electrode defining an air gap zone located in the magnetic field created by the magnet, such that the circuit creates a particle alignment zone in the air gap, and an electrical connector for electrically connecting the electrodes. The magnet can be a diametrically magnetized magnet.