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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, 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, 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, and the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity.赶在六月初十，俞大猷再次向岑港发动总攻，军士们几乎是踩着弟兄们的尸体在向上冲，从天亮冲到天黑，付出了近千条人命后，再次失败。　　年轻的海克力斯爱上美女希碧公主，父王却将她许配给兄长。二人打算私奔之际，海克力斯被父王的护卫逮住，他被罚战死沙场。海克力斯大难不死，更与战友索迪裡斯誓言推翻父王，同时救出爱人，令他成为史上最伟大的古希腊英雄之一。杨长帆摆了摆手，他还有很多说辞，但也不想多说了，先生才高八斗，在下恳请先生在东番主事。["Exclusive" Road Map for Inter-provincial Arrest of Doctors Exposed: Lawyers Confirm Hongmao Medicated Liquor Has Participated in the Whole Process]夕阳之下，两位伟大的骑士的身影被拉的老长老长……(未完待续。