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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.This time the optimization is aimed at both Windows and MacOS platforms, and all active subscribers can try the latest beta version.794 is the Id of task, and the previous is the current instance object. It can be seen that it is newly created and not reused every time. @ f37d177 is the first page, jumping three times. It also took three times to exit the application.即将美国纳斯达克上市天空网CEO丘凌（涂松岩饰）与恋人沈淑文（陈婷饰）外人看来完美一对,盛大婚礼确定一个月后进行但二人之间关系事实上已经变冷漠只利益维系着一切这一天北戴河开会沈淑文为了报复丘凌和一直暗恋闻朝阳（艾东饰演）发生了一夜情丘凌目睹二人偷情后深受打击深夜独自驱车回京意外被一辆车撞倒后失去了记忆被从电视台离职田晨（赵琳饰）带回家中接触中两人碰撞出情感火花而此时丘凌突然失踪让天空网陷入了空前危机也让沈淑文产生了巨大恐慌开始疯狂寻找丘凌下落……　　渴望单纯爱情的加嘉（柳岩饰）不顾危险，跟未婚夫宏泰东渡日本。来到宏泰家在富士山下的经营的赤石温泉。刚刚安顿下来加嘉就发现未婚夫一家和周围的居民不但行为诡异，还对她充满了敌意。由于命运的脱轨，她穿越时空而来，使得前世与今生意外重叠。　　澳门霸道总裁莫庭与未婚妻唐小余的结婚典礼即将举行，唐小余的躲闪却令二人的关系逐渐生疏起来，婚纱设计师May的出现似乎在提醒着大家什么。