Patent ID: 9452303
Filing Date: 2016-09-27
CPC Classification: A62C,E21F

Claim Text:
1. A valve device for preventing explosion propagation, comprising: a housing and a closing body for closing a passage in the housing in mechanical manner, wherein the closing body is movable between an open position and a closing position; an actuator configured to move the closing body from the open position to the closing position in less than 100 ms; a reservoir for a flame-extinguishing substance; and an injecting means configured to inject the flame-extinguishing substance into the passage in order to prevent explosion propagation resulting from a non-fully sealed closure by the closing body, wherein the reservoir is a closed reservoir in which the flame-extinguishing substance is stored under pressure, wherein the injecting means comprises an opening mechanism for opening the reservoir, and wherein the distance between the opening mechanism and a point of injection of the flame-extinguishing substance into the passage is less than 20 cm.