Fluid coupling

A fluid coupling, comprising a male coupling element and a female coupling element, each coupling element respectively comprising:

• a body, defining, along a longitudinal central axis, an inner pipe comprising a front volume, emerging at the front of the body, and a rear chamber,
• a main valve, movable in the body between an open position, in which a main passage is open between the main valve and the body, for the passage of the fluid between the rear chamber and the front volume, and a closed position, in which a closing part of the main valve is abutting forwardly against the body and closes the main passage,
• a main spring, which returns the main valve toward its closed position,
• a safety valve, movable relative to the main valve between a closed position and an open position of a secondary passage, arranged through the main valve, between the rear chamber and the front volume,
• a secondary spring, which bears on the safety valve and on the main valve and which returns the safety valve toward its closed position abutting forwardly against the main valve, and
• a plunger, movable in the main valve between a forward configuration, in which the safety valve is in the closed position, and a retracted configuration, in which the plunger moves the safety valve into the open position,
• the fluid coupling being configured to move between:
• an unpaired configuration, in which the bodies of the male and female coupling elements are separated from one another and the main and safety valves of the two coupling elements are in the closed position, and
• a paired configuration, in which the front volume of the female coupling element receives a front part of the body of the male coupling element by fitting and the main valves are in the open position;
• one from among the male coupling element and the female coupling element comprises at least one sealing gasket that cooperates with the body of the female coupling element and with the body of the male coupling element in the paired configuration,
• during a passage from the unpaired configuration to the paired configuration, the plungers come axially into contact against one another and each plunger moves the associated safety valve into the open position, while the associated main valve is in the closed position,
• wherein the fluid coupling is configured so that, during a passage from the unpaired configuration to the paired configuration:
• said at least one sealing gasket cooperates with the body of the female coupling element and with the body of the male coupling element, before the safety valves of the two coupling elements are moved toward their open position, and
• for at least one of the coupling elements, the plunger pushes the associated main valve back toward its open position, once the associated safety valve is in the open position.