Gas supplying device including a changeover unit, the changeover unit including two inlets connected to two distinct pressurized gas sources, and one outlet connected to a user member, the changeover unit including an automatic and/or manual switchover mechanism making it possible to switch the supply of gas to the user member to one source or to the other source so as to ensure continuity of supply, the device including a pressure sensor measuring the gas pressure at the outlet and/or at least one inlet of the changeover unit, wherein the device includes an ambient temperature sensor and an electronic data processing and storage member, the electronic data processing and storage member receiving the measurement from the ambient temperature sensor and the measurement from the pressure sensor and being configured to calculate, the corrected variation in gas pressure which is not caused by the variation in ambient temperature.

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 valve system having a valve position indicator is disclosed. The valve position indicator allows for viewing of the valve position from one or more viewing locations. In one example, the valve position indicator includes a side valve open/close indicator and a top valve open/close indicator on a valve assembly. An indicator locking mechanism securely locks the valve position indicator in alignment with a position of a control valve.

A gas supply regulation assembly includes at least one inlet capable of being in fluid communication with at least one gas bottle and an outlet capable of being in fluid communication with a gas-consuming appliance. The gas supply regulation assembly further includes a gas pressure detection device for detecting gas pressure in a chamber communicating with the outlet.

Disclosed is an automatic alignment method of a high-pressure gas container in which a high-pressure gas container is loaded on a lift of a cabinet so as to supply a gas from a fabrication (FAB) process facility of a semiconductor to a wafer production line, and then, the high-pressure gas container loaded on the lift is raised, and an end cap of the high-pressure gas container and the center of a connector holder of a gas pipe are automatically aligned.

The invention relates to an automatic cylinder changeover device (1), comprising two gas inlets for mounting gas cylinder banks, namely the left gas inlet and the right gas inlet, a gas outlet through which gas may be discharged and a valve suitable for connecting said left gas inlet or said right gas inlet with the gas outlet and configured for automatically reversible switching between these two connections, characterized in that the device (1) comprises an indicator, suitable for being manually set in one of two distinct positions, one of said positions indicating the left gas inlet and the other of said positions indicating the right gas inlet and comprises means for detecting the position of the indicator, including at least one sensor (5), preferably a pair of sensors (5). The invention also covers a method for monitoring a gas installation equipped with such automatic cylinder changeover device.

A fluid container (10) for fluid containment. The internal surface of the container body (12) defines a fluid-containment chamber (14), which has at least one fluid inlet and/or outlet port (18). Associated with at least one fluid inlet and/or outlet port (18), there is a fluid-flow control device, having a control body (16) integrally formed with the container body (12) as one piece.

A cryogenic liquid switching system including an electronic control mechanism; a solenoid valve communicatively connected to the electronic control mechanism via an interface cable; a gas input control connected to the solenoid valve; and a pair of pneumatic valve actuators connected to the gas input control via separate isolation tubing components The system also including a pair of valve actuator pins, one each connected to a respective one of the pair of pneumatic valve actuators; a pair of pneumatic valves, one each connected to a respective one of the pair of valve actuator pins; and a cryogenic liquid input in fluid communication with at least a portion of each of the pair of pneumatic valves. The system further including a first cryogenic liquid output in fluid communication with a first of the pair of pneumatic valves; a second cryogenic liquid output in fluid communication with a second of the pair of pneumatic valves; and a temperature probe positioned adjacent to an exit of the cryogenic liquid input to measure the temperature of an incoming cryogenic liquid and send a signal to the electronic control mechanism to open and close the pneumatic valves based at least in part on the temperature of the incoming cryogenic liquid.

Disclosed in the present invention is a system and method for supplying acetylene to an apparatus using acetylene, the system having at least one acetylene storage apparatus and an acetylene content analysis apparatus. The system and method disclosed in the present invention can utilize the capacity of an acetylene cylinder to a higher degree; before the solvent impurity concentration in acetylene gas reaches a level where it is no longer suitable, a more accurate understanding of the usable acetylene amount in the acetylene storage apparatus can be gained through detection, thereby reducing the number of times that the acetylene storage apparatus is refilled and replaced, and lowering the user's total costs.

A gas cylinder refilling system has at least one bar code reader disposed inside the gas refilling chamber and a gas control line for connecting a gas cylinder to a gas source inside the gas refilling chamber, the gas control line having a valve. There is a microprocessor (MPC) connected to a data storage unit, to the bar code reader and to the valve, and being configured to analyze information from the bar code reader such that when the information read by the bar code reader matches stored data in the data storage unit, the microprocessor signals the valve to feed gas to the cylinder.