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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, 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, 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, and the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity.暗恋，是一个人的兵荒马乱，也是一辈子的刻骨铭心。成绩优秀、生性骄傲的洛枳（张雪迎 饰），暗恋着幼时有过一面之缘的同学盛淮南（辛云来 饰），而盛淮南对此全然不知。高中毕业后，洛枳发现自己和盛淮南竟在同一所大学。两人意外相识并越走越近，但洛枳依然不敢表白心迹。当成长和现实的 压力接踵而来，这场漫长的暗恋，究竟该如何安放？"QQ Flying Car Tour" is a 3D racing casual mobile phone game developed by Tencent, which was launched for public testing on December 27. QQ Flying Car Tour inherits the operation of the tour, such as speed race, prop race, qualifying race, plot mode, etc.露丝·威尔森（Ruth Wilson）将在BBC在三集迷你剧《The Wilsons》中饰演自己的祖母Allison Wilson。Allison一直以为自己是个普通的妻子、母亲，直到丈夫死后，另一个女人找上门来，她才发现事情不是那么简单，原来自己的丈夫曾是名MI6间谍。　　阿布隐藏的身份以及来到地球的真正目的到底是什么？神秘的高科技军团背后有何故事？自暴自弃的熊二能否振作起来实现他的英雄梦？他们能否挽救地球的危机？秦淼在前，小葱在后，一溜烟跑到巷子深处，眼前是清辉江那清冷的水面。