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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.伍俊（张赫 饰）样貌帅气英俊，靠着辗转在不同的女人身边维系生活，伍俊乍一看不过是一个想要不劳而获的小白脸，然而，他可是将此当做是毕生的事业用心经营，想要讨女人欢心，还要颇费一番功夫呢。某日，伍俊和金达莱相遇了，起初，伍俊以为对方是一位不谙世事的富家千金，接触后才发现事实并非如此，然而，随着时间的推移，伍俊发现自己竟然无可救药的爱上了这位善良的女子。The investors are also very sympathetic when they see those investors stepping on thunder. However, stepping on thunder does not mean that money is gone. What can investors do?这一周，月下打算先还债。当这队夸张的组合来到汽车修理的课堂外，程雪芹和一群同学围在发动机边忙碌，脸上一团黑色的机油，但是态度认真，神情专注。Huh? Eun-kun? (illiterate speakers电影《逃出无人岛》讲述了生活奢靡然而缺乏家庭温暖的富二代战斗（曹天恺饰）厌倦了自己麻木无趣的生活，一次酒吧的意外邂逅，他遇到了自己的真爱—调酒师艾丽（陈梦瑶饰），两人决定来一次“私奔”式的旅行，不料二人乘坐的快艇意外发生事故，战斗被迫流落到一座与世隔绝的荒岛上，一同被海浪冲到岸边的却只有一件艾丽的比基尼泳衣。面对未知的丛林和大海，手无缚鸡之力的贵公子充满绝望，可是为了找到艾丽的意念迫使他必须学会如何在孤岛上存活下去…