Patent ID: 7896313

Claim:
A linear motion-type gate valve comprising: a housing having a first lateral surface at one side and a second lateral surface at the other side in a direction of a first axial line, composed of a main housing portion where a gas passageway penetrates in the direction of the first axial line, and a storage housing portion being situated next to the main housing portion; a valve plate being arranged to be free to linearly advance and retreat along a second axial line being perpendicular to the first axial line in a plate chamber inside the housing, and occupying an advancing position inside the main housing portion when the gas passageway is closed, and occupying a retreating position inside the storage housing portion when the gas passageway is opened; and a driving apparatus for advancing and retreating the valve plate, wherein the driving apparatus includes a shaft coupled with the valve plate and an actuator that drives the shaft, and the actuator and the shaft are arranged on the first lateral surface side of the housing in relation to the plate chamber, and the shaft is arranged so as to overlap with the valve plate in parallel with the second axial line, wherein a tip end of the shaft is coupled with the valve plate at a coupling portion provided at a position situated near a front end portion in an advancing and retreating direction axis of the valve plate.