Autonomous valve with temperature responsive device

A self-adjustable valve for controlling the flow of a fluid from one space or area to another by exploiting the Bernoulli principle, to control the flow of fluid, such as oil and/or gas including any water, from an oil or gas reservoir and into a production pipe of a well in the oil and/or gas reservoir, from an inlet port on an inlet side to an outlet port on an outlet side of the device, wherein the valve comprises a movable valve body arranged to be acted on by a temperature responsive device, and wherein the valve body is arranged to be actuated towards its closed position by the temperature responsive device in response to a predetermined increase in temperature in the fluid surrounding and/or entering the valve, wherein

• the temperature responsive device comprises an expandable means comprising a sealed structure at least partially filled with an expandable material, wherein said expandable material and hence also said expandable means are arranged to expand and cause a displacement of the movable valve body towards its closed position when the temperature of the fluid exceeds a predetermined temperature.

A method of controlling a self-adjustable valve having a movable valve body which adjusts the flow of a fluid from one space or area to another be exploiting the Bernoulli principle, said method comprising providing an expandable means comprising a sealed structure at least partially filled with an expandable material, and causing said movable valve body to move towards its closed position as a result of expansion of said expandable material and hence also said expandable means when the temperature of the fluid exceeds a predetermined temperature.