FEMALE HYDRAULIC COUPLING, MALE HYDRAULIC COUPLING AND COMBINATION THEREOF

Female hydraulic coupling (1) comprising: - an elongate body (2, 3) comprising a valve guide (4) extending in axial direction, which valve guide (4) debouches with an open end (8) at one end of the body (2, 3); - a valve body (5) guided in the valve guide (4), which valve body (5) is movable in axial direction between a first position and a second position; - spring means (7) arranged between the valve body (5) and the other end of the elongate body (2, 3) to urge the valve body (5) towards the first position; - a bypass channel (9) arranged in the elongate body (2, 3) and extending between the other end of the elongate body (2, 3) and a central portion of the valve guide (4), such that a continuous passage is formed in the elongate body (2, 3), which continuous passage extends from the open end (8) of the valve guide (4) to the other end of the elongate body (2, 3); - a locking sleeve (15), such as a ball retainer, arranged around the first end of the elongate body (2, 3) and movable in axial direction between a third position and a fourth position, which locking sleeve (15) comprises spring means (22) to urge the locking sleeve (15) towards the third position; - a first seal (12) and a second seal (13) arranged on the valve body (5) to seal the valve body (5) to the valve guide (4) in the first position, wherein the first seal (12) and second seal (13) are positioned in said first position on opposite sides of the opening (11) of the bypass channel (9) at the central portion of the valve guide (4). L'invention concerne un raccord hydraulique femelle (1) comprenant : un corps allongé (2, 3) comprenant un guide de soupape (4) qui s'étend dans la direction axiale, ledit guide de soupape (4) débouchant avec une extrémité ouverte (8) à une extrémité du corps (2, 3) ; un corps de soupape (5) guidé dans le guide de soupape (4), ledit corps de soupape (5) étant mobile dans une direction axiale entre une première position et une deuxième position ; des moyens de ressort (7) disposés entre le corps de soupape (5) et l'autre extrémité du corps allongé (2, 3) pour solliciter le corps de soupape (5) vers la première position ; un canal de dérivation (9) disposé dans le corps allongé (2, 3) et s'étendant entre l'autre extrémité du corps allongé (2, 3) et une portion centrale du guide de soupape (4), de sorte qu'un passage continu est formé dans le corps allongé (2, 3), ledit passage continu s'étendant de l'extrémité ouverte (8) du guide de soupape (4) à l'autre extrém