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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, Between that disc 4 and the guide sleeve 6 is provide a valve seat 7, A packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, the O-ring 10 is further arranged at 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 which 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, the packing assembly 9 comprises a flexible graphite packing layer.运气更好的是汉军一直没有发现虞姬怀孕的事情，因为项羽大军回援速度太快，诸侯联军骤然败退。姥爷赵寰李，是留日学习机械专业的优秀人才。日军的重重紧逼终于激起了他抗争的决心，与共产党人携手粉碎了日本人建造武器工厂的计划，却也因此失去了未婚妻、女儿、小妹等人。姥爷心灰意冷，只想了此残生。在被日军追杀时，被街头卖笑女小红所救，并意外卷入日军的“西部计划”危机中。为了挣扎求存和为被日军灭口杀害的一百多工人复仇，揭穿日军暗杀民主爱国人士的阴谋及获取南京大屠杀的证据。姥爷赵寰李在地下党的帮助和军统特工的暗中支持下，与日本特高课名宿展开了激烈斗争。姥爷以其高超的智慧和出类拔萃的机械专业技巧，终于营救出民主爱国人士，并协助八路军制作了山炮，毁掉了日军的“西部计划”秘密基地，获取了南京大屠杀的证据，为抗战胜利和东京大审判立下了不可磨灭的功勋。保护证人组督察许玮琛奉命保护受袭的名人乔江河，他是“商场魔术手”乔江山的胞弟。江河得罪了一名沈阳有势力人士熊飞，招致杀身之祸。于是警方建议江河接受保护证人组的保护，因此，玮琛认识了江河的侄女乔子琳。子琳性格怪僻，对人冷漠，甚至有点不近人情，玮琛和队员都认为子琳是被宠坏的富家千金。然而，玮琛目睹子琳面对父亲江山有着可爱的另一面，禁不住对子琳的性格产生疑问。熊飞特意来港和乔氏兄弟正式和解，可是期间发生枝节，最终江河重伤，一名路过的退休大法官却被流弹击毙。此时正在回家的子琳目睹一切，向警方指证熊飞开枪杀人，警方为保子琳安全，再次派出保护证人组保护子琳。在保护子琳的日子里，玮琛曾不顾危险，以身犯险救了子琳，连子琳视如命根的大提琴，玮琛也不顾一切力保不失，令子琳对玮琛留下特别的印象，开始留意这位保护自己的人说着，他走到李长明身边，对他道：爹，我来吧。No.84 Alden Richards