Abstract: An end cap holder may include a base block and a holding block. The base block may be configured to provide an end cap, which may be at a nozzle of the gas cylinder, with a torque for combining/separating the end cap with/from the nozzle. An angle correction groove may be formed at a first surface of the base block oriented toward the end cap. The holding block may be rotatably receivable in the angle correction groove to hold the end cap. The holding block may selectively make point contact with the base block to transmit the torque of the base block to the end cap. Thus, the holding block may accurately hold the end cap tilted to a vertical axis or a horizontal axis.

Abstract: A gas supply apparatus includes: a mounting portion installed on a cabinet; a gas supply portion installed on the mounting portion so as to be raisable and lowerable; and a gas container fixing portion fixing a gas container to the gas supply portion, wherein the gas supply portion includes a compressed gas association (CGA) fastening module that is installed on the mounting portion and is detachable from the gas container, and the CGA fastening module includes: a case; an end cap housing rotatably installed on the case; a CGA connector housing installed on the case so as to be disposed adjacent to the end cap housing; a gasket detection sensor installed on a sensor installation mount of the case and disposed under the CGA connector housing; and a power transmission portion spaced apart from the end cap housing and connected to the end cap housing and the CGA connector housing.

Abstract: A gas supply apparatus includes: a mounting portion installed on a cabinet; a gas supply portion installed on the mounting portion so as to be raisable and lowerable; and a gas container fixing portion fixing a gas container to the gas supply portion, wherein the gas supply portion includes a compressed gas association (CGA) fastening module that is installed on the mounting portion and is detachable from the gas container, and the CGA fastening module includes: a case; an end cap housing rotatably installed on the case; a CGA connector housing installed on the case so as to be disposed adjacent to the end cap housing; a gasket detection sensor installed on a sensor installation mount of the case and disposed under the CGA connector housing; and a power transmission portion spaced apart from the end cap housing and connected to the end cap housing and the CGA connector housing.

Abstract: An end cap holder may include a base block and a holding block. The base block may be configured to provide an end cap, which may be at a nozzle of the gas cylinder, with a torque for combining/separating the end cap with/from the nozzle. An angle correction groove may be formed at a first surface of the base block oriented toward the end cap. The holding block may be rotatably receivable in the angle correction groove to hold the end cap. The holding block may selectively make point contact with the base block to transmit the torque of the base block to the end cap. Thus, the holding block may accurately hold the end cap tilted to a vertical axis or a horizontal axis.