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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.When the user opens the mail we send, DDE payload will be executed.讲述了叛逆富少爷顾梓晨（牛骏峰饰）和倔强好胜的苏年年（邢菲饰）在大学校园从冤家到恋人、并与同学们一道找到属于自己人生方向的励志故事。Waiting together, I hope there will be a Chinese version of the market early.如果有一天你的手机接到陌生女子电话，要你帮之奔忙并营救她于水深火热，你会怎么办？最近古天乐就遇到这样的麻烦事。