Abstract: Provided is a valve assembly including: a valve housing inserted into, after removing a portion of an exhaust line of a vacuum chamber, the removed portion of the exhaust line to be open in a direction communicating with the exhaust line and to have a predetermined inner space in a direction perpendicular to the direction communicating with the exhaust line; a valve movable horizontally inside the valve housing to allow the valve housing to communicate with the exhaust line or to be blocked from the exhaust line; a valve driving part disposed on one side of the valve housing in such a manner as to be connected to the valve so as to horizontally move the valve in a direction perpendicular to the exhaust line; and valve movement guide parts disposed inside the valve housing so as to guide a moving path of the valve.

Abstract: Provided is a valve assembly including: a valve housing inserted into, after removing a portion of an exhaust line of a vacuum chamber, the removed portion of the exhaust line to be open in a direction communicating with the exhaust line and to have a predetermined inner space in a direction perpendicular to the direction communicating with the exhaust line; a valve movable horizontally inside the valve housing to allow the valve housing to communicate with the exhaust line or to be blocked from the exhaust line; a valve driving part disposed on one side of the valve housing in such a manner as to be connected to the valve so as to horizontally move the valve in a direction perpendicular to the exhaust line; and valve movement guide parts disposed inside the valve housing so as to guide a moving path of the valve.