A valve device, in the form of a plug, suitable to be integrated in a container provided to contain food and food products to be heated, said valve device being adapted to allow automatic venting and discharge, to the outside of the container, of the steam produced by heating and cooking of the food and the food product contained in the same container,
- the valve device comprising:
- a seat having a bottom portion defining a through hole;
- a control member, housed in said seat, able to control the pressure inside the food container in which the valve device is integrated;
- and
- elastic means associated with said control member;
- wherein said control member is pivoting on and adapted to rotate and tilt with respect to the bottom portion of said seat;
- and
- wherein said elastic means are able to apply an elastic force directed to press and close said control member against said through hole formed in the bottom portion of the seat, thereby preventing the steam, produced by the heated food, from coming out of the container in which the valve device is integrated;
- whereby, when the pressure, inside the container in which the valve device is integrated, of the steam which is produced by heating and cooking of the food reaches a critical value and therefore prevails over the elastic force, applied by said elastic means, which presses and closes the control member against the through hole formed in the bottom portion of the seat, the control member is automatically activated so as to rotate and to tilt in contrast to the action of said elastic force, making fulcrum on the bottom portion of the seat, so as to open and detach said control member from said through hole formed in the bottom portion of the seat, and therefore allow the steam to exit from the container and to flow out.