Gate valve

In a valve box that makes up a gate valve, a balance room is disposed on one side wall that faces toward a processing chamber. In the balance room, a first seal member is provided to surround a first pathway, and a second seal member is mounted on an outer edge of the balance room. Further, a balanc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Ishigaki Tsuneo, Nagao Takashi, Shimoda Hiromi
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BASIC ELECTRIC ELEMENTS BLASTING COCKS DEVICES FOR VENTING OR AERATING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING SEMICONDUCTOR DEVICES TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	In a valve box that makes up a gate valve, a balance room is disposed on one side wall that faces toward a processing chamber. In the balance room, a first seal member is provided to surround a first pathway, and a second seal member is mounted on an outer edge of the balance room. Further, a balance port is formed in the balance room. The balance port communicates with an accommodating room that is formed in the interior of the valve box. In a valve closed state in which a valve disk is seated on a valve seat of the valve box, the pressure inside the accommodating room and the pressure inside the balance room are equalized or made uniform through the balance port.