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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.E6a1197b5de1409f9a636763340cc450《变形计》是由芒果TV独家自制的青春励志生活类体验纪实节目，禀承湖南卫视《变形计》“换位思考”的理念，关注当代青少年教育与成长问题。在全新一季节目中，将尝试单边变形的方式，记录城市少年来到农村，和农村小伙伴一起生活。他们将感受对方的故事，共同完成心路转变。剧集通过四十年的时代跨度，描述了一支王牌军队的成长历程，通过对个体的刻画，塑造了一群有灵魂、有本事、有血性、有品德的新一代军人，以小见大见证国之重器的蜕变之路，浓墨重彩描绘军事国防的希望与未来，为强军变革的大背景下，一曲我军新时期军魂的激情赞歌。该片选取男子Chiron在孩童、少年、青年时期的三幕，孤独急促的提琴声中，他长大、相爱、发现自己的性取向，经受外界非议和内心挣扎后，找到了真正的自我和对“男子气概”的定义。It is strictly prohibited to have multiple tasks in a PR unless they are closely related.年轻的二等兵（丁海寅饰）被编排到捉拿逃兵的单位，继而在他服义务役期间，逐渐认识到每位士兵蒙受的苦痛伤悲。