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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, 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, the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity, and the two O-rings 10 are respectively arranged on the inner side and the outer side of the packing gland 11.Console.log ("I finally saw Baidu's pen test ~");山芋捶桌不止。周夫子见满屋子小女娃都望着他们，觉得此事不可轻视，务必要澄清，遂也站起身道：此事老夫知道。　　车敏秀最初带着18美元闯进拉斯维加斯，后来一夜成为百万富翁，他的前半生本身就是一部情节跌宕起伏的小说，而该片以赌场为背景讲述了较量输赢的残酷、男人渴望成功的野心以及因为阴差阳错而失之交臂的美丽爱情。还没有正式放映，这部《ALL IN》已经在东南亚圈引起轰动的主要原因是，因为剧中的男女主角分别由因《蓝色生死恋》而家喻户晓的宋慧乔和《共同警备区JSA》的男主角李秉宪扮演。(three) to undertake business did not sign a fire protection technical service contract with the client according to law;