Abstract: A vacuum valve including a valve body with a valve orifice, a closure member for closing the valve orifice, a first piston-cylinder unit, a second piston-cylinder unit, a first control element, and a second control element. When opening the vacuum valve, a pressure medium line, which applies pressure to the opening cylinder space of the second piston-cylinder unit, is blocked during the first part of the opening process, and is released at the end of the first part of the opening process by the first control element. When closing the vacuum valve, a pressure medium line, which applies pressure to the closing cylinder space of the first piston-cylinder unit, is blocked during the first part of the closing process, and is released by the second control element at the end of the first part of the closing process.

Abstract: A closing unit for a vacuum valve includes a first valve plate (7) for closing a first valve opening (2) of the vacuum valve, a second valve plate (8) for closing a second valve opening (3) of the vacuum valve, and a carrier plate (19) that lies between the valve plates (7, 8) to which the valve plates (7, 8) are fastened detachably. For fastening a corresponding valve plate (7, 8) to the carrier plate (19), at least one clamping piece (20, 21) is used by which interacting clamping surfaces (22-26) are clamped with each other. Of the interacting clamping surfaces (22-26), at least one is constructed as an angular surface by which the corresponding valve plate (7, 8) is pressed against the carrier plate (19).

Abstract: A vacuum valve including a valve body with a valve orifice, a closure member for closing the valve orifice, a first piston-cylinder unit, a second piston-cylinder unit, a first control element, and a second control element. When opening the vacuum valve, a pressure medium line, which applies pressure to the opening cylinder space of the second piston-cylinder unit, is blocked during the first part of the opening process, and is released at the end of the first part of the opening process by the first control element. When closing the vacuum valve, a pressure medium line, which applies pressure to the closing cylinder space of the first piston-cylinder unit, is blocked during the first part of the closing process, and is released by the second control element at the end of the first part of the closing process.