Abstract: The invention relates to a shut-off apparatus for the charging device of a pressure vessel, especially for the storage of cryogenic liquefied gases, having a shut-off valve with a valve housing and a valve body stressed by a closure spring which, in order to charge the pressure vessel, can be brought into the open position against the force of the closure spring, having an apparatus for locking the valve body in the open position of the valve and having a release apparatus subjected to the action of the vessel pressure, which causes the apparatus to release the lock if a predetermined threshold vessel pressure is exceeded.

Abstract: The invention relates to a coupling for connecting vacuum-insulated line ends (12, 13) via a coupling socket (11) and a coupling plug (10) which are provided for conveying a cryogenic medium and which have closing elements (28, 29) at the outer line ends that close the line ends. In order to ensure a simple replacement of the gaskets and improved safety during operation and in case of operating errors, the closing elements (28, 29) of both line ends (12, 13) are directly adjacent to the separation plane (27) of the coupling socket (11) and of the coupling plug (10).

Abstract: The invention relates to a coupling for connecting vacuum-insulated line ends via a coupling socket and a coupling plug which are provided for conveying a cryogenic medium and which have closing elements at the outer line ends that close the line ends. So that the valve-like means can be opened or closed by remote control in a defined manner, the coupling plug (10) has a control unit (43) that is connected to the closing element (29) and that opens at least the closing element (29) when exposed to control pressure.

Abstract: A liquid counter having a rotor pivot operating in a stream of cryogenic medium includes a friction bearing for the rotor pivot loosely mounted in a housing while the liquid counter is operative but arrested in the housing both radially and axially.

Abstract: An apparatus for controlling the pressure of a gas in a gas line includes a source of liquefied gas maintained at a prearranged gas pressure, an evaporation-inducing device connected to the source of liquefied gas and to the gas line, and a self-actuating valve disposed in the feed line for releasing a gas stream from the source of liquefied gas upon a predetermined pressure in the gas line falling below a prearranged pressure in the source of the liquefied gas, less a pressure loss in the feed line, so that the pressure in the gas line is substantially maintained at the predetermined pressure.