Regulator assemblies can be tested using test fluids selected to have a molecular weight about that of a selected fluid to be dispensed from a fluid storage and delivery vessel including the regulator assembly. The test fluid can be a single gas or a mixture. The test fluid can have a molecular weight of between 80% and 110% of the molecular weight of the selected fluid dispensed from the fluid storage and delivery vessel. Regulator assemblies tested in this manner can pass evaluation when they show fewer than two spikes on the initiation of flow of the test gas. These regulator assemblies can be installed into fluid storage and delivery vessels, particularly for storage and delivery of pressurized fluids.

The invention relates to a gas container equipped with a gas distribution valve having an electronic device for measuring gas autonomy. Flow selection means allow a desired gas flow to be selected. The electronic device includes a pressure sensor. Signal processing means allow gas autonomies to be determined on the basis of the pressure signal and of the selectable gas flows. A selection component cooperates with the signal processing means in order to successively display, on data display means and in response to successive digital activations by the user of the selection component, the various selectable flow values and the various corresponding autonomies, with each flow value being simultaneously displayed with a corresponding autonomy.

The present invention relates to a hydrogen gas composition comprising specific gas contaminants at threshold limit values (as listed in the ISO 14687:2019 standard). The invention also concerns a metal cylinder such as an aluminium cylinder comprising a hydrogen gas composition according to the invention.

The hydrogen gas composition of the invention may be used as a calibration composition and/or quality control composition for controlling hydrogen fuels.

A system that can eliminate engine combustion emissions in addition to raw and fugitive methane emissions associated with a gas compressor package. The system may comprise an air system for starting and instrumentation air supply; electrically operated engine pre/post-lube pump, compressor pre-lube pump, and cooler louver actuators; compressor distance piece and pressure packing recovery system; blow-down recovery system; engine crankcase vent recovery system; a methane leak detection system; and an overall remote monitoring system.

The invention relates to a pressurized gas container, in particular a gas cylinder, having an internal volume for gas storage, a fluid-distributing valve, a pressure sensor and microprocessor-based control means. The microprocessor-based control means are configured to detect filling of the gas container with gas, by comparing said at least one pressure value measured by the pressure sensor with at least one predefined and stored reference pressure threshold value; then to initiate a timer on the basis of a detection of filling of the gas container with gas; and to trigger a warning when the timer exceeds a given period calculated from the initiation of the timer.

Provided is a method for storing a fluoro-2-butene by which isomerization reaction is unlikely to proceed during storage. A fluoro-2-butene represented by general formula C.sub.4H.sub.xF.sub.y where x is 0 or more and 7 or less, y is 1 or more and 8 or less, and x+y is 8 contains or does not contain hydrogen chloride as an impurity. The fluoro-2-butene is stored in a container in which the concentration of hydrogen chloride is 100 ppm by volume or less in a gas phase portion when the fluoro-2-butene contains hydrogen chloride.

Provided is a method for storing a fluorobutene by which decomposition is unlikely to proceed during storage. A fluorobutene represented by general formula C.sub.4H.sub.xF.sub.y where x is 0 or more and 7 or less, y is 1 or more and 8 or less, and x+y is 8 contains or does not contain at least one of manganese, cobalt, nickel, and silicon as a metal impurity. The fluorobutene is stored in a container in which the total concentration of manganese, cobalt, nickel, and silicon is 1,000 ppb by mass or less when containing at least one of manganese, cobalt, nickel, and silicon.

A gas supply device for a manufacturing device includes an inert gas supply source that supplies inert gas, a supply line connected to the inert gas supply source, a nitrogen removal portion that is provided on the supply line and that removes at least a portion of nitrogen in the inert gas, and an oxygen removal portion that is provided on the supply line and that removes at least a portion of oxygen in the inert gas.

The invention relates to a gas container having a gas distribution valve and an electronic measurement device arranged on the gas distribution valve. The electronic measurement device having an electronic display screen which is electrically connected, via an electrical connecting connector, to a circuit board having at least one microprocessor. The electrical connecting connector having a connector body in the shape of an elongate bar through which a plurality of electrically conductive elements passes extending between two opposite faces of the connector body. The electrically conductive elements are separated from one another by regions made of insulating material.

Device for filling with liquefied gas comprising a fluid circuit provided with a first pipe for liquid transfer comprising a first end that is intended to be connected to a source of liquefied gas and a second end that is intended to be connected to a tank to be filled, a second pipe for gas transfer comprising a first end that is intended to be connected to the source of liquefied gas and a second end that is intended to be connected to said tank to be filled, the circuit comprising at least one third transfer pipe connecting the first and second transfer pipes, and a vent device connected to the first and second transfer pipes via a set of one or more safety valves, the circuit comprising a set of one or more valves for controlling the streams of fluid in the pipes of the circuit, the device comprising a system for gas flushing of the circuit, characterized in that the flushing system comprises a first source of pressurized gas, and a first set of one or more flushing pipes connecting the first source of pressurized gas in parallel both to the first and second transfer pipes via a set of one or more valves.