Device for equalizing a pressure difference for an aircraft

A device for equalizing a pressure difference for an aircraft, the device comprising:

• a planar separating wall, which is configured to be fixed to the aircraft and to fluidically separate a first space from a second space, the separating wall having a flow opening, which is configured to fluidically connect the first space and the second space;
• a decompression valve, which is configured to close the flow opening;
• a securing element on the decompression valve or on the separating wall, the securing element being configured to enable a release movement of the decompression valve when a predetermined pressure gradient between the first space and the second space is exceeded, such that there is a fluidic connection between the first space and the second space;
• and
• a receiving element provided on the separating wall or on the decompression valve, the securing element being operatively connected to the receiving element, wherein:
• the securing element comprises a rotary element and at least two fixing elements,
• the rotary element is rotatably mounted about a rotational shaft,
• the rotary element is configured to be received in the receiving element,
• the fixing elements non-rotatably fix the rotary element beneath the predetermined pressure gradient in a fixing position, and
• at least one of the at least two fixing elements is a spring element.