石油、石化及相关工业用钢制截止阀和升降式止回阀 k系数表
|   阀门的公称压力 PN  | 
   系数 k  | 
 
|   16~20  | 
   1.25  | 
 
|   25~50  | 
   1.00  | 
 
|   63~100  | 
   0.91  | 
 
|   150﹑160  | 
   1.00  | 
 
|   250﹑260  | 
   0.97  | 
 
|   420  | 
   1.00  | 
 
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