Patent ID: 7389794

Claim:
A quick coupling for connecting at least two pressurised lines to a first coupling part that is connectable to a second coupling part so as to be pressure-proof, characterised by an externally arranged central pressure relief device which is integrated in the first coupling part, or arranged on the first coupling part in an additional block, which central pressure relief device can be connected to the pressurised lines by way of pressure-relief connection lines, wherein the second coupling part is a plug-in part and the first coupling part is a socket part and in a coupled position a control device for the central pressure relief device is arranged in a first and second connection block, or in a first and second connection block and an additional block adjacent to the first connection block, and a control device, comprising a first guide pin, arranged in the second connection block, in the coupled position acts on a control socket which is arranged in the first connection block, through which control socket a pressure-relief valve system of the central pressure relief device is operable in the first connection block, or in the first connection block and the additional block.