A pressure control device for pressure packaging based on a disc with fluid connection and a collecting basin, with associated closing means. The closing mechanism in the pressure control device is no longer based on a cylinder with a central opening in the separation wall and closing-off of the opening by means of a piston with stem. The proposal is extremely simple, compact and easy to assemble. The use of O-rings is superfluous. A method for manufacturing a pressure control system and a kit of parts for the assembly thereof.