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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, A valve seat 7 is arranged between the valve disc 4 and the guide sleeve 6, a packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, an O-ring 10 is further arranged on 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, and the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41.不管怎样，田翰林长大了，该告诉他的，都应该告诉他。Throttle罗曼回到了那块邻近乌克兰边境的土地---这块地是他刚从祖父那里继承来的。他决定卖掉这个寸草不生的地产，但被一帮当地黑社会的人所警告，因为他的祖父曾是这帮人的首领。他们绝不会就此放弃这片土地---以及他们的走私产业---更不会束手就擒。? ? A schematic structural diagram of a preferred embodiment;他对侄子的了解颇多，故而为其辩解。Consolidate scattered resources