A female element of a coupler, the female element being able to be coupled with a male element for the removable fluid junction of two pipes, the female element comprising a body centered on a first longitudinal central axis and defining an inner volume for receiving the male element, a front side and a rear side, the female element further comprising a central plunger longitudinally secured to the body and positioned within the inner volume, as well as a slide valve movable within the inner volume around the central plunger, between a forward closing position, in which the slide valve cooperates tightly with the body and the central plunger, and a withdrawn open position, wherein
- the body forms an outer flange ring positioned around the inner volume and having an outer radial surface, a front axial face and a rear axial face, the front axial face and the rear axial face being parallel and annular and protruding radially from the rest of the body,
- the outer flange ring comprises at least two passages, each passage being arranged through the outer flange ring and linking the outer radial surface and the inner volume,
- a distal sealing gasket is housed in the body at an inner radial surface of the body delimiting the inner volume and
- a front face of the slide valve in the closed position and the distal sealing gasket are positioned longitudinally on either side of the passages, while the distal sealing gasket is located in front of the passages.