| 
 
  | 
 球阀流道类型  | 
|||
| 
 公称尺寸  | 
 通径  | 
 标准缩径  | 
 缩径  | 
|
| 
 DN  | 
 PN16~PN50  | 
 PN63~PN100  | 
 PN16~PN140  | 
 PN16~PN140  | 
| 
 
  | 
 阀体通道最小直径/mm  | 
|||
| 
 8  | 
 6  | 
 6  | 
 6  | 
 不适用  | 
| 
 10  | 
 9  | 
 9  | 
 6  | 
 不适用  | 
| 
 15  | 
 11  | 
 11  | 
 8  | 
 不适用  | 
| 
 20  | 
 17  | 
 17  | 
 11  | 
 不适用  | 
| 
 25  | 
 24  | 
 24  | 
 17  | 
 14  | 
| 
 32  | 
 30  | 
 30  | 
 23  | 
 18  | 
| 
 40  | 
 37  | 
 37  | 
 27  | 
 23  | 
| 
 50  | 
 49  | 
 49  | 
 36  | 
 30  | 
| 
 65  | 
 62  | 
 62  | 
 49  | 
 41  | 
| 
 80  | 
 75  | 
 75  | 
 55  | 
 49  | 
| 
 100  | 
 98  | 
 98  | 
 74  | 
 62  | 
| 
 125  | 
 123  | 
 123  | 
 88  | 
 —  | 
| 
 150  | 
 148  | 
 148  | 
 98  | 
 74  | 
| 
 200  | 
 198  | 
 194  | 
 144  | 
 100  | 
| 
 250  | 
 245  | 
 241  | 
 186  | 
 151  | 
| 
 300  | 
 295  | 
 291  | 
 227  | 
 202  | 
| 
 350  | 
 325  | 
 318  | 
 266  | 
 230  | 
| 
 400  | 
 375  | 
 365  | 
 305  | 
 250  | 
| 
 450  | 
 430  | 
 421  | 
 335  | 
 305  | 
| 
 500  | 
 475  | 
 453  | 
 375  | 
 335  | 
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