Patent ID: 8534314

Claim:
Explosion protection valve having a housing and having at least one movable closing body which is guided on a guide rod inside the housing and can be displaced from a predefined open position in at least one direction of movement into a sealing closed position in the event of a blast or suction wave, a spring arrangement comprising at least one spring pair which interacts with the closing body being provided for holding the open position on the guide rod, wherein said spring pair has at least a first spring element, a second spring element, a first driver element and a second driver element for acting upon said first and second spring element, wherein said first and second spring elements are arranged on the guide rod one after another, wherein the entire portions of each of the spring elements are completely separated from each other in the direction of movement such that they do not overlap, the spring elements and driver elements being arranged in such a way that, during a displacement of the closing body into the closed position, the second spring element cannot be acted upon via the second driver element until after a predetermined spring travel of the first spring element.