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Fitz of Industrial FireA 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.　　8. What Can A Song Do?《嘻哈老师》讲述的是曾为地下嘻哈歌手的小学音乐老师为摆脱枯燥的现实生活，在下课后开办嘻哈教室所引发的故事。被板栗一脚踢飞，重重地砸在一棵松树上。When I first encountered this kind of "dog", The company commander glanced at it and said nothing, Immediately ordered us to fire, Shooting from high terrain has its advantages, We shot exactly from almost 100 meters away, After aiming at it, Hit to a distance of 30 meters but did not kill a few such 'dogs', At last I saw that these things were about to rush up, There was a sudden explosion in front of the position, The explosion was a temporary obstruction to them, We didn't remember until the bombing was over. Fortunately, some Type 66 directional anti-infantry mines were deployed 30 meters in front of the positions before. As well as some Type 72 anti-infantry mines, Although those "dogs" run fast, But because of his short body, So they are all 'sticking to the land', Triggered the guide line of the mine, Then it led to an explosion. Anti-infantry mines have almost no dead corners within the effective attack range, especially the "round head" type (72-type anti-infantry mines, which contain 650 anti-personnel steel balls and have no dead corners covered 360 degrees after the explosion). Many close 'dogs' were directly blown to pieces, while those far away were also beaten into 'pockmarks' by steel balls and died lying there.