Abstract: The selective corrosion of a pressure vessel is facilitated to reduce the adverse consequences of a corrosion induced vessel wall rupture. A corrosion resistant coating is applied to the pressure vessel except in a region within the bounds of a restrictor located within the vessel. The region may have a reduced wall thickness. An accelerant material may be applied to the region to facilitate corrosion. Any corrosion induced rupture will occur in the region, and the pressure release due to rupture of the vessel wall will be controlled by the restrictor.

Abstract: An automated system for charging container with a liquefied refrigerant gas or like fluid employs a fill head assembly which is adapted to be controllably lowered onto the container. The fill head has a vacuum source assembly which connects with a low pressure source and a fluid supply source which connects with a source of pressurized fluid. A fluid passageway selectively communicates with the low pressure source and the pressurized fluid source. The fill head may be released so that fill head essentially rests on the container which is being filled and the container is automatically sequentially evacuated and filled with a pre-established amount of pressured fluid until a pre-established net weight is obtained. The system is controlled by a programmable controller.

Abstract: A pressurized fluid container filling system is disclosed comprising a first support platform for supporting a plurality of pressurized fluid containers for evacuating, a vacuum supply assembly for connecting a vacuum source to the fluid containers supported on the first platform and having at least one supply line for connection to the container valves, a second support assembly for supporting a plurality of pressurized fluid containers for filling, a pressurized fluid assembly for supplying pressurized fluid to the containers supported on the second platform and having at least one supply line for connection to the container valves, and a valve-clamp assembly interconnecting a container valve to the vacuum and fluid-supply assemblies, the valve-clamp assembly having a quick-disconnect valve for rapid connection and disconnection to the fluid supply line and vacuum supply line to permit flow when connected to the supply line and to close off flow when disconnected from the supply line, a valve-seat assembly