| 摘要 |
A closure cap for a fixed neck of a container, especially of a motor vehicle radiator. The closure cap comprises a cap inner part provided with a flow connection between the inside of the container and the outside of the container. The cap inner part includes a valve assembly for releasing and blocking the flow connection. The valve assembly includes a valve body is able to move in a to-and-fro manner. It is pressed with a bias in a direction toward the interior of the container against a sealing seat. The valve body is biased so that it can lift from the sealing seat when a limiting value of the inner pressure of the container is surpassed. The bias can be adjusted by a drive controlled by the operation of the vehicle.
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