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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.Second: Create a subclass《真情之家》（英语：Home Sweet Home），原剧名为《温馨之家》，是2017年三立华人电视剧八点档系列第十九部作品，接档《只为你停留》。本剧由孙沁岳、阳咏存、纪言恺、李维维、 谢祖武、苗可丽领衔主演。原女二演员周采诗因尾椎椎间盘突出辞掉演出工作，造成主视觉与片头片尾、项一柔戏份都重拍。Table 1尹旭甚至有种感觉，这股子深沉和敏锐似乎只在张良和范增身上见过，陈平或许更多了几分灵活与狡黠。世间传言解差和狱卒最心鄙狠毒，皇帝为锻炼络桑，密旨把他下狱，随囚发配边疆，沿路受尽折磨欺凌，以锻炼他忍辱挨苦的坚韧。后又以络桑作靶，展开蒙古式猎杀，百里之内，能获络桑首级者，重赏奖励。于是络桑在生死一发中逃命，以训练他死里求生的机智和愤机反抗的杀机，再以他挚爱激发他奋起争斗的野性，而蓄聚他不屈不挠的意志。最后挚爱被杀，络桑濒临疯狂，击杀情敌和叛国首恶，而通过试炼，被皇帝颁赐“金搏虎”美誉。 　　带刀闯关(三集) 　　豫亲王府的飞雪郡主被追杀，首谋竟是王府总管罗冲，内中牵涉非外人能知晓。偏偏奉旨进京的金搏虎无意间搅进事件中。金搏虎基于抑强扶弱的心理帮助救援飞雪，也成为凶徒群起追杀的目标。一路惊险艰窘，生死须臾，因而和飞雪建立相互依赖的情义。络桑痴情的挚爱的爱侣尸骨未寒，不可能移情别恋，所以纵是落花有意，流水却无情，飞雪富贵娇女，自尊受损。难免怒容恶声相对，金搏虎把情和义划分界限，坚不逾距，飞雪虽恨，却也衷心景仰他的志节，和对爱情的坚贞。