A throttle valve for adjusting the feeding of a gas to a fuel cell, which includes: a valve body, divided into a first and a second portion; a gas feeding duct obtained in the first portion; a throttle plate arranged in the feeding duct; a shaft which is rotatably mounted in the first portion and supports the throttle plate; and an actuator which is mounted in the second portion and is configured to rotate the shaft. The throttle valve further comprises a magnetic joint, which transmits the motion from the actuator to the shaft and is divided into a first half coupled to the shaft, and a second half facing the first half and coupled to the actuator. The throttle valve also includes an insulating wall which insulates the first partition, in a pneumatically sealed manner, from the second portion of the valve body and is arranged between the two halves of the magnetic joint.

In a hydrogen or helium container and method for containing the gas, a double-walled housing is provided, which defines an inter-space between the inner and the outer walls, the inter-space being filled with a fluid at a higher pressure than the pressure of the hydrogen or helium contained within the inner wall.

Device for filling tanks with pressurized gas, in particular hydrogen gas tanks of motor vehicles, the device comprising at least one gas source, a transfer circuit comprising at least one upstream end connected to the source and at least one downstream end intended to be connected in removable fashion to a tank to be filled, the transfer circuit additionally comprising, between its upstream and downstream ends, a set of buffer storage container(s) which is (are) connected in parallel to the transfer circuit via a set of respective connecting valve(s), the transfer circuit comprising a portion of pipe(s) forming a loop, a plurality of the buffer storage container(s) being connected in parallel to the said loop, characterized in that the transfer circuit comprises a plurality of separate downstream ends each intended to be connected in removable fashion to a respective tank to be filled, the said downstream ends being connected in parallel to the said loop and comprising a set of respective linking valves, so that control of the connecting valves and of the linking valves makes it possible to bring at least one first buffer storage container into fluidic communication, via the loop, with a first downstream end and, simultaneously, to bring at least one second buffer storage container into fluidic communication, via the loop, with a second downstream end and/or to bring two separate buffer storage containers into fluidic communication.

A cap assembly for closing an opening in a vessel may include a stopper and a rigid cap adapted to fit over the stopper and onto a vessel. The stopper may include a polymer body adapted to fit an opening of the vessel and a tubular portion defining an internal passageway extending through the polymer body. The rigid cap may include a pressure based locking mechanism adapted to engage the vessel under a unidirectional force and a tamper evident feature.

A cap assembly for closing an opening in a vessel may include a stopper and a rigid cap adapted to fit over the stopper and onto a vessel. The stopper may include a polymer body adapted to fit an opening of the vessel and a tubular portion defining an internal passageway extending through the polymer body. The rigid cap may include a pressure based locking mechanism adapted to engage the vessel under a unidirectional force and a tamper evident feature.

Method for preparing a hydrogen tank including at least one sealing layer of a composition including at least one polyamide P1, and at least one base in order to provide the tank with at least one opening, wherein the method includes: providing of at least one base, the at least one base being covered by at least one layer of a composition including at least one adhesion primer; preparing the at least one sealing layer; fastening the at least one base to the at least one sealing layer.

Provided is a pressure vessel strain analysis device capable of grasping a correlation between manufacturing conditions and strains. The pressure vessel strain analysis device includes an analysis unit. Based on a plurality of manufacturing conditions of a plurality of pressure vessels and a plurality of strains acquired by an image correlation method in a state where a predetermined internal pressure is applied to the plurality of pressure vessels manufactured under the plurality of manufacturing conditions, the analysis unit calculates a correlation between the plurality of manufacturing conditions and the plurality of strains.

Provided is a pressure vessel strain analysis device capable of grasping a correlation between manufacturing conditions and strains. The pressure vessel strain analysis device includes an analysis unit. Based on a plurality of manufacturing conditions of a plurality of pressure vessels and a plurality of strains acquired by an image correlation method in a state where a predetermined internal pressure is applied to the plurality of pressure vessels manufactured under the plurality of manufacturing conditions, the analysis unit calculates a correlation between the plurality of manufacturing conditions and the plurality of strains.

To provide a method for safely and stably storing a hydrochlorofluoroolefin filled in a container for storage, transportation, etc. A method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of air in the gas phase in the storage container at a temperature of 25° C. is kept to be at most 3.0 vol %, and a method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of oxygen in the gas phase in the storage container at a temperature of 25° C. is kept to be at most 0.6 vol %.

A fluid tank for integration into a structure of an unmanned aircraft includes a shell having a first axial wall, an oppositely arranged second axial wall, an upper side, a lower side, and an enclosed interior, at least one receiving chamber in the interior for storing fluid, and a collection chamber, which is arranged on the lower side and which is fluidically connected to the at least one receiving chamber. The collection chamber includes a bottom surface, through which there extends a drain, wherein a covering surface is arranged above the bottom surface and covers at least a portion of the collection chamber. At least one flow opening could be arranged on an upper side of the collection chamber, which flow opening allows gas bubbles to escape in the direction of the upper side of the fluid tank.