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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.14.1 Unqualified skin and accessory diseases that are difficult to cure.2.4 SMT Machining Positioning Holes and Identification Points他转过头去，歉疚地望着头发散乱的玄武将军，哽声道：将军……他们君臣就要共赴黄泉了，刚刚他还在怀疑她。就见黄豆、山芋、红椒、青莲等人神情兴奋之极，仿佛回到了童年，齐声大喊：准备——开始。阿塞尼奥·霍尔（Arsenio Hall）于2019年4月在加利福尼亚州圣何塞（San Jose）现场拍摄了他的第一部单口喜剧特辑。某一日，两人在前往神社的路上遭遇了一连串的意外，一个行踪诡异的男人成为了危害小镇宁静的不安定因素，为了压制疯狂的男人，由麻进行了“神悬仪式”，然而，让所有人都没有想到的是，被神明附身而拥有了能够降妖除魔的能力的人，却是皇缠。