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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.24Zhang Yange: Irregular reviews, maybe two months, maybe half a year. This year, we have prepared a bonus of 10 million yuan to reward the content. There is no ceiling on individual awards. If we think the manuscript is worth 200,000 yuan, we will also send it. Of course, it is not necessary to send out all the 10 million yuan, depending on whether the reporter has the ability to take it away. The total amount of awards in the first phase is also far more than one million.Increase the Maximum Half ConnectionsThe side that corresponds to the component side of the printed board.该剧创意源自瑞典画家西蒙·斯塔伦海格创作的画作，在他的画中科幻元素与瑞典乡村及其它各地风光巧妙地融为一体。“环形”是一种用来解开宇宙奥秘的机器，它让科幻小说中的事情成为可能。这个梦幻又神秘的小镇将讲述生活在“环形”的人类的心酸故事。　　在一次行动中，由于两人错杀了另一势力的成员，对方杀害了民在作为报复。极度悲愤的载文发誓要为民在报仇，但是组织断定二人失误在先，应该顾全大局不再追究为好。