通过试验 ,得出了金属硬密封截止阀随口径的增大 ,最小泄漏点密封面宽度增加的规律 ,并总结出各种口径阀门泄漏量和密封面宽度关系的近似公式 Through the experiment, the law of increasing the diameter of the metal hard sealing globe valve with the increase of the caliber and the increase of the sealing surface of the minimum leakage point is obtained, and the approximate formula of the relationship between the leakage of various caliber valves and the width of the sealing surface is concluded