Abstract: A non-sliding gate valve includes a valve housing and a valve body, the valve body having a paired valve plate and a counter plate disposed within the valve housing in parallel with each other. Also included are a pair of inner supports, each made of a metallic circular plate and arranged in parallel with each other, an outer support arranged outside the inner supports, and a pair of annular elastic connecting sheets arranged radially between the inner and outer supports and in parallel with each other, with a gap being left therebetween. The valve and counter plates are sealingly connected to the confronting inner supports, respectively; and the inner and outer supports are sealingly secured at their peripheries to the annular sheets at their inner and outer diameter portions, respectively.

Abstract: A non-sliding vacuum gate valve comprising a valve housing hermetically sealed to the outside, an opening formed in one of its side walls, and a valve body disposed within the valve housing and adapted to sealingly open or close the valve seat formed around the opening in which the mechanism for opening and closing the valve body sealingly open or close the valve seat is provided outside the valve housing, the mechanism being made to be able to carry out two subsequent movements, one to move the valve body in a direction substantially perpendicular to the valve seat, the other to move the valve body substantially orthogonal to a direction substantially perpendicular to the valve seat with the valve body being spaced apart from the valve.