A quick coupling element (100; 200) for removably joining pressurized fluid pipes (C1, C2), this coupling element comprising - a tubular body (102; 202) defining an inner channel (C100; C200) for the passage of a pressurized fluid and a longitudinal axis (X100; X200) of the coupling element, - means (104, 116, 124; 204, 224) for closing off the inner channel on the side of a front face (108; 208) of the coupling element, - a relief member (124; 224) of the inner channel (C100; C200), movable between a first position, in which it closes off a relief passage (P100; P200) connecting the inner channel to the outside of the body, and a second forward position relative to the first position, in which it does not close off the relief passage, characterized in that - the relief member is a relief ring (124; 224) that is part of the means (104, 116, 124; 204, 224) for closing off the inner channel (C100; C200) and that is mounted around a central member (116; 204; 104), which is also part of the closing off means, and inside a peripheral part (104; 202; 102). - a first surface (1248; 2248) of the relief ring is part of the front face (108; 208), - the relief ring is movable, relative to the central member and parallel to the longitudinal axis (X100; X200), between its first and second positions, - the relief ring (124; 224) defines, at least in part, the relief passage (P100; P200) with the central member (116; 204) or with the peripheral part (104; 102), and - in its first position, the relief ring (124; 224) bears sealably against the central member (116; 204; 104), over a first sealing circumference, and bears sealably against the peripheral part (104; 202; 102), over a second sealing circumference, - a diameter of the second sealing circumference is strictly larger than a diameter of the first sealing circumference, and - the coupling element (100; 200) comprises an elastic return member (128; 228) for returning the relief ring (124; 224) toward its first position, this elastic member pushing the relief ring back toward the inside of the tubular body (102; 202) and/or toward the rear of the coupling element (100; 200). - a tubular body (102; 202) defining an inner channel (C100; C200) for the passage of a pressurized fluid and a longitudinal axis (X100; X200) of the coupling element, - means (104, 116, 124; 204, 224) for closing off the inner channel on the side of a front face (108; 208) of the coupling element, - a relief member (124; 224) of the inner channel (C100; C200), movable between a first position, in which it closes off a relief passage (P100; P200) connecting the inner channel to the outside of the body, and a second forward position relative to the first position, in which it does not close off the relief passage, - the relief member is a relief ring (124; 224) that is part of the means (104, 116, 124; 204, 224) for closing off the inner channel (C100; C200) and that is mounted around a central member (116; 204; 104), which is also part of the closing off means, and inside a peripheral part (104; 202; 102). - a first surface (1248; 2248) of the relief ring is part of the front face (108; 208), - the relief ring is movable, relative to the central member and parallel to the longitudinal axis (X100; X200), between its first and second positions, - the relief ring (124; 224) defines, at least in part, the relief passage (P100; P200) with the central member (116; 204) or with the peripheral part (104; 102), and - in its first position, the relief ring (124; 224) bears sealably against the central member (116; 204; 104), over a first sealing circumference, and bears sealably against the peripheral part (104; 202; 102), over a second sealing circumference, - a diameter of the second sealing circumference is strictly larger than a diameter of the first sealing circumference, and - the coupling element (100; 200) comprises an elastic return member (128; 228) for returning the relief ring (124; 224) toward its first position, this elastic member pushing the relief ring back toward the inside of the tubular body (102; 202) and/or toward the rear of the coupling element (100; 200).