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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.这些才是尹旭自信的来源新伦敦市民伯纳德·马克思(劳埃德饰)和列宁娜·克朗(布朗·芬德利饰)只知道严格的社会秩序，和一种叫做唆麻的完美药物，服用这种药物是一种即时满足并无处不在的性文化。然而为了探索超越社会限制的生活，二人开始了他们在野蛮之地的假期，却卷入了一场可怕的暴乱。伯纳德和列宁娜被野蛮人约翰(埃伦瑞奇饰)救了出来，约翰和他们一起逃回了新伦敦。剧集预计2020年上线流媒体平台NBCU。可是黎章的拳头却先一步砸在了他左边肩窝处。1.「看不见的沉淀」张家。1. [Site] Legal Working Day