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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, The O-ring 10 is further arranged at 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, 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, and the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity.水源方便更是得天独厚。V. SYN Attack Prevention Technology最根本的身份，项羽还是楚国的臣子，上面还有一个楚怀王熊心。后来，那些菜秧子发芽、长大，那种清新的绿，逼你的眼，化你的心，竟是形容不出。The series of reports on Interface Hongmao Medicated Liquor is one of the best reports on the incident in the whole industry. It is timely, has core interviews, has great influence, meticulous investigation and comprehensive angle. It has won influence and credibility for the interface.特别是哥哥胜巳和弟弟勇海，他们得到了罗布陀螺仪与罗布水晶，哥哥有着泰罗奥特曼的火元素的力量，变身为罗索奥特曼，而弟弟有着银河奥特曼水元素的力量，变身成为布鲁奥特曼。而他们的故事也将围绕着这一家展开，前期因为兄弟俩刚刚得到奥特力量，还不能完全熟悉，因此也产生了很多危机。但是随着兄弟俩的配合以及战斗经历的增加，他们得到的罗布水晶就越来越多，然后就可以不停的变换形态。在这部奥特曼中，我们还将看到兄弟俩除了和怪兽之间战斗的故事，还有他们一整个家族的故事。