Abstract: A connection adapter for producing a detachable fluid connection between a first fluid system and a second fluid system is provided, the connection adapter comprising a switching valve; a housing including a pressure chamber and a valve chamber fluidly connected; an actuation element to actuate the switching valve to selectively open and close the fluidic connection; a ventilation path leading out of the connection adapter from the valve chamber; a ventilation shut-off means to close and open the ventilation path; a connection element fluidly connecting the pressure chamber to the first fluid system; a quick fastener socket fluidly connecting to the valve chamber and connects the valve chamber to a connection element of the second flush system; and a locking mechanism to lock the quick fastener socket and is restricted to a locked position when the ventilation shut-off means closes off the ventilation path.

Abstract: A connection adapter for producing a detachable fluid connection between a first fluid system and a second fluid system is provided, the connection adapter comprising a switching valve; a housing including a pressure chamber and a valve chamber fluidly connected; an actuation element to actuate the switching valve to selectively open and close the fluidic connection; a ventilation path leading out of the connection adapter from the valve chamber; a ventilation shut-off means to close and open the ventilation path; a connection element fluidly connecting the pressure chamber to the first fluid system; a quick fastener socket fluidly connecting to the valve chamber and connects the valve chamber to a connection element of the second flush system; and a locking mechanism to lock the quick fastener socket and is restricted to a locked position when the ventilation shut-off means closes off the ventilation path.

Abstract: A coupling for vacuum-insulated pipe or hose lines provided for conducting one or more cryogenic media, in which a single- or multi-core coupler plug and corresponding coupler socket each have a ball valve provided with a through hole and a locking sleeve coupled to rotate its respective ball valve when the sleeve is axially displaced. When the coupler plug and coupler socket are brought together, the locking sleeves engage and are displaced axially, such that the ball valves are moved into open positions in which a conduit of the coupler plug may be extended through the coupler plug ball valve into the coupler socket. Such a coupler allows a docking procedure to be reliably performed in all radial angular positions between the plug side and socket side, without need for skilled operators, position sensor technology or a precision refueling robot.