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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, Between that valve stem 3 and the valve cov 2 there is provided a packing assembly 9, An O-ring 10 is further dispose at that upper portion 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, 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, the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity, and the two O-rings 10 are respectively arranged on the inner side and the outer side of the packing gland 11.孤傲或者说高傲。　　在毕业季他们都经历着人生中的重大变动：林汉杰由原来的富二代变成破产少爷不得已去“跑龙套”，柯芸惨遭男友劈腿，还被闺蜜苏婷婷借机上位算计了一把，程铭遵循家里的意愿去考公务员但其实并不心甘情愿，“乐天派”大雨在创业途中屡屡碰壁……地处昆嵛山区腹地的孔家镇乃胶东重镇，交通便利，经济繁荣。大地主兼大资本家孔庆儒身兼区长和校董等职，拥有军警宪特和私人武装，在孔家镇可谓一言九鼎，为所欲为。在远离孔家镇的“世外桃园”桃花沟，蚕农张老三家养了三个天仙般美丽的女儿。大女儿好儿尤以羞花闭月、沉鱼落雁的美貌远近闻名，二女儿桃子也到了谈婚论嫁的年龄。故事就从桃花沟开始发生了Dominic Cooper﹑Ruth Negga及Joseph Gilgun主演的AMC剧《传教士 Preacher》确定在第四季剧终，并宣布在美国时间8月4日首播。这部根据DC旗下Vertigo同名漫画改编的剧集曾经有不错的人气，不过上季收视跌至0.2-0.3。在经历了改变人生的事件后，欧拉·阿卜杜勒·萨布尔踏上了自我探寻之旅，并应对新的现实带来的挑战。本剧由汉德·萨布里主演。三十年代上海一片歌舞升平景象。名震一时的东北赌王于镇海亦来向上海大亨冯敬尧挑战。誓要夺回其恩师之赌场。期间，海因误会而结识了码头帮会头目之妹苏七巧，并揭发其未婚夫郭四维欲谋财害命，七巧感激之余更芳心暗许，惟海却不忘昔日旧爱顾清华。后海、华重遇，华已成尧之情妇…… 　　时青年许文强凭藉上海名妓方艳云、丁力及祥贵的协助，瞬间成为上海的黑道新星。强、海惺惺相惜，合作经营剧院生意，不料尧从中作梗，令强、力转投旗下。海不敌尧，更差点葬身火海，幸得七巧所救，逃到香港。 　　强与尧之独女程程情投意合，力惟有隐藏倾慕之情。时尧勾结日商杀害同胞令强不满反目，强忍痛与程分手，力便乘势日夕相陪。强逃至香港与江子君结为夫妇，不料尧杀至，强虽幸免但君却惨死。强悲忿矢志为妻报仇，遂联同海合力对付尧……