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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.故事发生在1985年的上海，面临去北京大学报道，孙雨欣（剧雪 饰）的母亲突然因车祸撒手人寰，留下了三个未成年的弟妹，而这三个孩子都是母亲当狱警时收养的犯人的后代。雨欣放弃了上大学的念头，靠打工抚养三个没有血缘关系的弟妹，中间她还有一段短暂的婚姻。十年后，弟妹陆续长大成人，而雨欣也在考虑要不要嫁给一直帮助自己始终未婚的中学同学大暑（董勇 饰）。当年和她一同考取北京大学的田风（王同辉 饰））如今海外归来，交谈中得知雨欣多年来的不易，他帮助雨欣将“亲情树”系列服饰推向市场。雨欣原本想在新闻发布会上与大暑举行婚礼，不料节外生枝，发生了谁都想不到的一幕......可是……夫人看样子不行了……田遥使劲推开她，朝着左前方一星灯火疯狂地奔过去。请坐。The younger son Yishang won the Model Police Award and the whole family gathered to celebrate him. Jin Patrol looked at the health of his eldest son who appeared alone at the family gathering and showed dissatisfaction. The second daughter-in-law, who had been observing her mother-in-law and husband all day, was shocked when her mother, who often caused trouble, appeared and begged her not to come to herself again. Yu Ying's boyfriend broke up with her and drunk Yu Ying made a scene in the barbecue shop.因说起派谁回湖州的话，葡萄姑姑就道：这事不好派别人。提婆是一个坠落人间的天使。 由于天堂人口骤减，所以他来到人间查询为什么越来越多的人上不了天堂。其他的天使都劝他不要对人类有所希冀，可他仍对人类有信心。艾德是一个以自我为中心的记者。由于他负责的节目收视率下降，他被迫去犯罪前线采访，以提升收视率。 艾德在犯罪现场认识了提婆，也获知了提婆的真实身份及意图。艾德让他住在自己家里。他们达成共识，如果提婆帮助爱德破解案件真相、获取独家新闻，艾德就会帮助提婆保守秘密，并且帮他完成他的任务以便早日回归天堂。