Gate valve

This gate valve is provided with a valve housing, a valve body, a rotating shaft, a rotating shaft drive unit, a movable valve unit, a valve housing urging unit, a hydraulic drive unit, a first connection unit, and a second connection unit. The first connection portion has: a plurality of connection members provided along the periphery of the first opening portion; and an inner sealing region andan outer sealing region which are provided along the periphery of the first opening portion at positions on both sides of the connecting member in the radial direction of the first opening portion andcan seal the surface of the valve box and the surface of the first chamber. 本发明的闸阀具有阀箱、阀体、旋转轴、旋转轴驱动部、可动阀部、阀箱施力部、油压驱动部、第一连接部和第二连接部。所述第一连接部具有：沿第一开口部的周围设置的多个连接部件；以及内密封区域和外密封区域，在所述第一开口部的径向中的所述连接部件的两侧位置上沿所述第一开口部的周围设置且能密封所述阀箱的表面和第一腔室的表面。