A dome cover with vacuum valve is a closable lid mounted on a container, tank, or silo, equipped with an integrated vacuum relief valve. This valve protects the container from negative pressure (vacuum), which may occur during emptying or cooling processes. When internal pressure drops below a certain threshold, the valve automatically opens to let air in, preventing damage to the container (such as deformation or implosion). Dome covers with vacuum valves are commonly used in the chemical, food, and agricultural industries, as well as on IBC containers.