FIELD: black metallurgy. SUBSTANCE: device has vacuum chamber with auxiliary tank mounted on it by means of vacuum-tight flange joint. Tank has a shell in its lower part and a gate valve consisting of a body, one movable and two immovable (upper and lower) plates which have drives constructed as hydraulic cylinders. Cylinder is set up vacuum-tightly in a shell. Device is provided with two double-armed levers hinged on a gate valve body and contacting with the lower immovable plate and spring adjustable stops. Stops are placed outside the shell in a hollow body on both sides of hydraulic cylinder. Hollow body adjoins the shell and auxiliary tank flange where slot for levers positioning are made. EFFECT: improved design. 4 dwg
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