Container for storing fluid under pressure, e.g. oxygen-rich air in aircraft emergency breathing systems, has sealed inlet and plug opened by deforming one component,

摘要

The storage container, especially for a pressurized gas, consists of a body (1) and a first orifice, especially for filling, with a seat (4) sealed by a plug (5) that can be moved between open and closed positions. It differs in that the plug and seat have matching surfaces but different degrees of hardness, allowing the orifice to be opened once only by plastic deformation of one of the two components. The seat and plug are made, for example, from different metals such as stainless steel and cupro-nickel alloy and have a difference in hardness of about 125 Vickers.