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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.田地里高低不平，跑得趔趔趄趄。《神奇绿巨人》延续了第一部《绿巨人》的主题，但是以全新的剧情作为开始。科学家布鲁斯·班纳正在拼命寻找方法治愈他被伽玛辐射伤害的细胞，因为被辐射伤害之后的他一愤怒就会释放足以毁灭一切的力量，变身绿巨人霍克。生活在阴影中的布鲁斯·班纳切断了和过去生活的联系，甚至断绝了和爱人贝蒂·罗斯的联系。不过，霍克不是不可战胜的，他将遭遇一个可怕的新对手，他的破坏力远远超过霍克。此劇講述因為別人的野心與慾望而失去自己的人生與孩子的女人，向陷害自己的惡人報復的故事。一对情侣因为开餐馆意见不合闹出的啼笑皆非的爱情故事……他们各自用自己的方式关爱对方。