The inert gas filled in an inert gas cylinder (5) is supplied to the gas conduit (4).

A left cracking cylinder and a right cracking cylinder which are fixed to the oil gas cylinder in a sealing manner are arranged in the heat conduction box at the bottom of the oil gas cylinder.

The device is further provided with a shielding gas supply means for introducing shielding gas to the interior of the shielding gas cylinder (40) from the transmitting window (15) side of the shielding gas cylinder.

The gas cylinder is operable to release the clear gas to fill the interior of the tube to expand the tube to the expanded form.

The oil gas cylinder is communicated with inner cavities of the left cracking cylinder and the right cracking cylinder in a sealing manner.

A material inlet and an oil gas outlet are formed in the oil gas cylinder.

The impurity gas adding means is a laser gas cylinder containing a prescribed concentration of impurity gas or an impurity gas container (44).

A gas cylinder is provided between the transition duct and the inlet port.

The present system provides a novel regulator-valve arrangement which protects the gas cylinder and at the same time allows a quick change-over when the cylinder must be replaced.

A new and improved high pressure post valve used to control the flow of high pressure gas, e.g., oxygen, from a high pressure gas cylinder.

The loading efficiency of the gas cylinder is low.

Such a method enables a more accurate determination of the time to run out of the gas cylinder.

gas supply or to a gas cylinder in compliance with

A pressure regulator (600) may control a pressure of gas introduced into the container (700), and a lance (25) used to pierce a pressurized gas cylinder (100) may include a leading face arranged to reliably pierce a cylinder closure.

The gas cylinder pushes hydrogen into a cylinder of liquid borax, which is used to remove the moisture from the hydrogen gas.