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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, An upper part of that O-ring 10 is provide 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, the two O-rings 10 are concentric arranged, and the inner diameter and outer diameter of the two O-rings are different.The parameter object sender in DoSth is usually used to represent the initiator of the action, and EventArgs e is used to represent the parameters taken by the action.入世纪末叶，京城之内出现了一群武艺高强且极富正义感的侠客，专门惩治武林败类，义除赃官，抚弱济贫，人称“京城镖局”，为首的就是闻名遐尔的大刀王五，他们不仅除恶扬善还投身救国。戊戌变法失败后，兄弟们齐心协办，深入牢营解救谭嗣同出狱，但谭嗣同仍以忠君为本，谢绝了镖局兄弟一片侠情义胆，慨然就义，王五等人只好洒泪告别。随后他们又开始了暗杀窃国大盗袁世凯的计划……吴智昊饰演的男主角尹处容从一出生就可以看到鬼。他曾是暴力犯罪部门的王牌警察，但是七年前的一次暴力伤害事件，令他失去了家庭和搭档。由此他离开了原先那个部门，现在只是一名普通的地方警察，不想与这个纷乱的世界有任何瓜葛，但他仍然渴望爱情，因为他太孤独了。然后有那么一天，他偶然的与一个女高中生的鬼魂攀谈起来，事情开始变得复杂。这个剧集中，处容与他顽强的女搭档还有一个鬼女孩一起，不断破解一个个神秘案件。各种各样隐藏在每个犯罪现场背后的“死亡信号”将是破解案件的关键。八九十年代，混迹一方小有成就的武术教练杨远为了替朋友打抱不平，陷入了和地痞的生死纠葛之中。出狱后，物是人非，曾经的兄弟抢占了自己的女友，而地痞不断骚扰他，并最终枪杀了他的弟弟，本想安分过日子的他决意复仇，等待他的又是一次寒窗岁月。她说的是过年的时候，几家的孩子凑一块，那真是没日没夜地闹，一天要吃五顿饭。