A combined lid/valve device including a lid, for a pressurised product dispensing container, and a valve mechanism, in which the lid is provided with a so-called upper face and a so-called lower face, in which the lower face of the lid includes a base provided with a skirt for receiving the neck of a pocket containing the product to be dispensed, the base forming a housing for the valve mechanism consisting of a dispensing tube and a sealing gasket, the sealing gasket mounted on the dispensing tube snap-fitting into a through-hole between the upper face and lower face of the lid and allowing an outlet end of the dispensing tube to project beyond the upper face of the lid.