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A low temperature stop valve, Unlike Example 1, Comprises a valve body 1 and a valve cover 2, A valve stem 3 is arrange in that valve body 1, One end of the valve stem 3 is provided with a valve disc 4, The other end of the valve stem 3 is provided with an adjusting handwheel 5, A low portion of that disc 4 is provided with a guide sleeve 6, The guide sleeve 6 is fixed by means of a connecting piece and a spring pad 8, A valve seat 7 is arranged between the valve disc 4 and the guide sleeve 6, a packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, an O-ring 10 is further arranged on the upper part of the packing assembly 9, the upper part of the O-ring 10 is provided with a packing gland 11, the valve body 1 is provided with an arc-shaped end face 12, the arc-shaped end face 12 forms a line seal between the valve body 1 and the valve seat 7, and the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41.该剧将空少们的秘密基地为主题讲述几对不同关系男男、男女之间错综复杂的关系,在这场存在金钱利益,爱情阴谋的关系中,深藏攻与零,因爱有基,因爱放纵,谁愿一同登这爱的飞机,探险这段惊险有爱的旅程。​Enchanted parts: belt, shoes空姐出身的张嘉欣（杨思琦 饰）一生追求浪漫的爱情，无奈情路坎坷，突然宣布要和钻石王老五Gary（李铭顺 饰）结婚。同是空姐出身的三位好姐妹（张可颐、刘心悠、卫诗雅 饰）一同在马来西亚见证嘉欣大婚，嘉欣却临阵退缩，宁做落跑新娘一路出逃到杭州疗情伤。在情场中寻覓的没有脚的小飞鸟，最后被艺术折服，方停下脚步……一个商场中的女强人，以为抓紧老公不放会快乐，最后知痛，放手，才得到解脱的快乐。 一个极之重视外表的OL，三天之内180度转变，她真正需要的是有承担、能解决问题的男人，踏实的生活才会令她快乐。一个宅女，找到一个会令她笑的男人，就快乐了。三姐妹如何惩罚贱男为姐妹复仇？这出喜剧又将如何收场？如此一来，无疑延长了暴露在越军面前的时间，死伤更为惨重。讲的是范伟扮演的语文老师，因为一次在课堂上没收了一个女生的手机，而引发了女生男友的跟踪事件。虽然都是一群小人物的故事，但发生在孔令学这位普通东北小城市知识分子身上的故事，更能折射出现代社会人与人之间隔阂、猜忌、欠缺安全感等社会问题，极具警醒意义。"Inspired by large institutions, many smaller banks have also started preparations because they have realized that they may also be the next target of attacks and have stimulated strong subjective initiative due to worries," Bolstridge pointed out.