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为大家带来好玩有趣的绘本故事，陪伴小朋友们在玩耍中快乐成长。这也没什么好瞒的，最后大家总会知道，而且还要上刑部找王大人了结前案呢。听到陈启的话，夏林没有多说，答应了。又冲秋霜努嘴示意，你还不安慰安慰她。Download link: https://pan.baidu.com/s/1OFokh4varQAGsP35g_U0Ew Password: fjzeA 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, A packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, 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 which forms a line seal between the valve body 1 and the valve seat 7, and 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.