Patent ID: 7686036

Claim:
A valve apparatus for a movable oxygen cylinder, the valve apparatus comprising: a valve body whose one side is combined with the movable oxygen cylinder, and which comprises an opening which communicates with a discharge port at the other side therein along a first path, an insertion space, and a second path, in sequence lengthily from one side, to thus discharge oxygen discharged from the oxygen cylinder through the discharge port, and which is opened outside from the insertion space provided between the first path and the second path; a post valve which is installed at an other side of the valve body, and which opens and closes an upper end of the second path which communicates from the oxygen cylinder to the discharge port according to operation of a lever, to thus control discharge of oxygen; and a charge adapter whose one side is detachably installed in the opening of the insertion space, and which comprises a third path which is formed lengthily and a fourth path whose one side communicates with the third path and other side communicates with the first path and the insertion space, and a first check valve which charges oxygen supplied from the outside into the oxygen cylinder along the third path, the fourth path and the first path, in the case that the check valve is installed along the third path and thus closes the second path, and a second check valve which discharges oxygen supplied from the oxygen cylinder into the discharge port along the first path, the fourth path, the insertion space and the second path, in the case that the check valve is installed along the fourth path and thus opens the second path, wherein the first check valve interrupts oxygen discharged from the oxygen cylinder from reversely flowing in the charging direction of the charge adapter, and the second check valve interrupts oxygen from being charged into the oxygen cylinder through the discharge port.