Abstract: The invention relates to a liquid transfer device including: a connecting element which is to sealably attached onto a liquid transfer opening and which includes a set of liquid transfer ports, an outlet, and a bore that extends between the transfer ports and the outlet; and an adapter which is to be connected to liquid discharge means and which includes a head shaped such as to be inserted into the outlet and including a set of holes for engaging with said ports. Said liquid transfer device includes a swing joint placed in the connecting element between the outlet and the liquid transfer ports and includes a set of liquid passages and a recess shaped such as to receive the head of the adapter in a position in which said passages of the joint and the holes of the adapter are aligned. Said joint is rotatably movable in the connecting element, between a closed position of the device and a liquid transfer position, by means of the head of the adapter.

Abstract: A liquid-transfer device that comprises a tubular coupling element for fastening in sealed manner to a liquid-transfer orifice and including a bore extending through the coupling element, and a valve member mounted to slide in the coupling element between a closed position for closing the coupling element and a liquid-transfer position for transferring liquid through the coupling element. The valve member is slidable against a return spring urging it towards the closed position and being suitable for sliding from the closed position to the liquid-transfer position under the action of an adapter that is reversibly connectable to the coupling element. One coupling element and the adapter includes a set of longitudinal grooves and the other includes radial teeth that engage in the grooves while the adapter is being actuated, the coupling element having an abutment against which the adapter bears after the valve member has been actuated by the adapter.