Extruding/shrinking type flat sealing face gate valve

The utility model relates to an extruding/shrinking type flat gate valve which is suitable for town gas pipelines. A gate plate of the gate valve adopts an extruding/shrinking type structure; a block bearing is arranged on a valve rod; the valve rod can penetrate through a central through hole of th...

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Bibliographische Detailangaben
1. Verfasser:	CHUNNIAN YE
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The utility model relates to an extruding/shrinking type flat gate valve which is suitable for town gas pipelines. A gate plate of the gate valve adopts an extruding/shrinking type structure; a block bearing is arranged on a valve rod; the valve rod can penetrate through a central through hole of the gate plate when the valve is opened and cause the gate plate to be elevated along the valve rod, and the valve rod is not elevated. Thereby, the utility model has the advantages of good sealing performance, low cost, small installation occupation of land, etc., and is particularly suitable for town gas pipelines buried underground.