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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 11.1. The declared variables are read-only to the outside world. However, values of object types are exported and can be modified. ?　　第一天到洛城刑警队报到的林冲接连遇到几次意外。先是手机在街上被飞车党抢走；然后发现将要工作的警队竟然蜗居在一座关帝庙内；接着就是在邝队的指派下，还有一个月就要退休的老刑警骆迦山成了自己的师父；尤其让他没想到的是：上班的第一天洛城就发生了了一起大案——华天集团董事长柳华南的女儿柳素素竟在她自己的婚礼上被人绑架了。就这样，一个看似平常的绑架案却将骆迦山师徒二人推向了反黑前沿。葫芦点头道：我已经跟他们说了，瞧他们不是在用竹篙往上绞么。葫芦一觉睡到凌晨，醒来后神清气爽。The works, community topics, user comments, content or pictures uploaded by users included in this site are all personal behaviors of users. If the above content infringes your rights and interests, welcome to report the complaint. Once verified, it will be deleted immediately and this site will not assume any responsibility.