EXPLOSION-PROOF VALVE, HOUSING CONSTRUCTIONAL ELEMENT, MANUFACTURING METHOD OF EXPLOSION-PROOF VALVE, AND MANUFACTURING METHOD OF HOUSING CONSTRUCTIONAL ELEMENT

摘要

To provide an explosion-proof valve which closes after opening and enables reduction of the number of components to simplify manufacturing processes.SOLUTION: An explosion-proof valve 1 provided at a closed vessel has: a spring member 2 including a plate-like base part 21 including a valve hole 211 and an extension part 22 which extends from the base part 21 and is elastically deformable; and a sealing member 3 which is engaged with or integrally molded with the extension part 22 to be held thereby and is biased to a close position, at which the sealing member 3 closes the valve hole 211, by the extention part 22.SELECTED DRAWING: Figure 4