Gate valve system, casting plant, and casting process

A casting facility comprising a mold and a furnace,

• wherein a separating gate valve system is arranged between the mold and the furnace,
• wherein the separating gate valve system comprises a base plate and a gate valve plate,
• wherein the base plate has an opening and the gate valve plate has a first opening and at least a second opening, and the separating gate valve system is set up in such a manner that the separating gate valve system can be brought into a casting position, a pressing position, and a closure position,
• wherein in the casting position, the first opening of the gate valve plate is arranged to align with the opening of the base plate, at least to the greatest possible extent;
• in the pressing position, the second opening of the gate valve plate is arranged to align with the opening of the base plate, at least to the greatest possible extent;
• and in the closure position, the gate valve plate closes off the opening of the base plate,
• wherein the second opening of the gate value plate is connected to a pneumatic pressure device, so that in the pressure position a pressure is applied to the second opening of the gate value plate to maintain the casting pressure within the mold.