亚洲一区二区三区在线看_久久久久电影_中文字幕在线不卡一区二区三区_精品中文字幕一区二区

Working principle of globe valve

2014-08-08 Number of attention:

Opening and closing parts (discs) driven by the stem, along the axis of the seat (sealing surface) do a straight-line movement of the valve is called globe valve.




The globe valve is generally composed of driving parts (handwheel), stem, valve body, valve cover, disc (closure) and filling device. The hand wheel is connected with the valve stem, and the valve disc is driven by the valve stem, so that the valve disc moves reciprocating along the axis of the valve seat, so that the pipeline is connected or cut off.




Globe valves are widely used, mainly for high pressure and small caliber occasions, generally only to DN400 (NPS16), larger caliber specifications only for special pipelines. For example, large-diameter stainless steel globe valves are used in large-scale oxygen pipelines because of friction between other valves and electrostatic ignition.




The valve stem generally rotates and lifts, and the handwheel is fixed at the top of the stem. When the hand wheel rotates clockwise, the stem thread rotates downward, the disc sealing surface contacts closely with the seat sealing surface, and the globe valve closes; when the hand wheel rotates counterclockwise, the stem thread is turned up, the disc sealing surface and the seat sealing surface are separated, and the globe valve opens.


主站蜘蛛池模板: 高安市| 珠海市| 余江县| 福州市| 铁岭市| 镇巴县| 苍南县| 鸡东县| 尚义县| 绿春县| 会泽县| 溆浦县| 茂名市| 体育| 阿鲁科尔沁旗| 寻乌县| 安远县| 澄江县| 阜康市| 云安县| 鸡泽县| 马鞍山市| 扶风县| 康平县| 惠安县| 建水县| 石门县| 南郑县| 海南省| 武鸣县| 青岛市| 靖安县| 化德县| 鞍山市| 南华县| 遂昌县| 安泽县| 印江| 嘉禾县| 庆城县| 新津县|