Single-use emergency thermal valve

A single-action emergency thermal valve, comprising a body with a through channel for supply of a cooling fluid through an inlet of the thermal valve in the direction of its outlet, and a fuse which melting point is chosen in accordance with the valve actuation temperature, characterized in that the through channel is made in the form of an elbow and consists of a horizontal section and a downward-directed vertical section;

• the inlet of the channel is located in the lower part of the vertical section;
• the outlet of the through channel is provided with a plug made of a high-strength refractory material and attached to a flange of the horizontal section with the fuse, wherein the ratio of volumes of the horizontal and the vertical sections of the through channel is chosen so that the cooling liquid would neither enter the horizontal section of the through channel nor affect the melting point of the plug.