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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.　　欧阳万成饰演Elaine和Julius的儿子Horace，一个有才华又随和的艺术家，跳了两级，16岁就以全额奖学金上了哈佛。Jessica很快就喜欢上了这个神童，但他的过去有一些秘密⋯⋯灌婴拍手叫好之后，旋即又担忧道：元帅，你亲自过河，以身犯下，怕是不妥当吧？听灌婴这么说，韩信心中一暖，也略有一丝兴奋，看来一番苦心没有白费。Introduction: When using this expression, it will make a low whisper to show "shyness".拉媪（拼塔安 Aom Phiyada Akarasenee 饰）是女爵的女儿，母亲去世后，她被伯母带进了宫中，从此开始了她极富有传奇色彩的一生。尤德（Captain Phutanate Hongmanop 饰）是拉媪的第一任丈夫，然而，这个男人带给拉媪的却只有痛苦和失望。坚强的拉媪果断的选择了离开，她决心要掌握自己的命运。之后，拉媪遇见了名为特伯（萨哈拉·桑卡布理查 Kong Saharat Sangkapricha 饰）的男子，力排众议之后，拉媪和特伯结婚了，不幸的是，特伯在战争中丧生，拉媪成为了寡妇，然而，属于她的故事并没有因此而完结。迪拉卢王（颂恩·宋帕山 Son Yuke Songpaisarn 饰）走进了拉媪的生活，并且最终成为了她的第三任丈夫，这一次，拉媪又将如何谱写自己的人生呢？如今尹旭就站在这个沙盘之前。‘Younger’ renewed for Season 4 ahead of Season 3 premiere