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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, A valve seat 7 is arranged between the valve disc 4 and the guide sleeve 6, a packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, an O-ring 10 is further arranged on 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, and the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41.张无忌会做出怎样的选择？赵敏、周芷若又会做出怎样的选择？张无忌性格宽厚，有些优柔寡断，恐怕很难做出选择，这时，赵敏、周芷若的选择，就至关重要了。黄豆撇撇嘴道：你就记得吃。"So did there be any melee between you next? Or did the" dogs "break through the defense line at position 142?" I asked.黄瓜看着她们奇怪地问道：你们……云华表姐和云燕表姐咋没跟你们一块哩？紫茄便跟二哥说了刘蝉儿学医的事。