钢制截止阀阀杆的最小直径
| 公称尺寸DN | 公称压力PN | |||||||
| 16 | 20 | 25、40、50 | 63、64 | 100、110 | 150、160 | 250、260 | 420 | |
| 阀杆的最小直径/mm | ||||||||
| 15 | 11.1 | 11.1 | 11.1 | 13.5 | 13.5 | 13.5 | 15.9 | 15.9 | 
| 20 | 12.7 | 12.7 | 12.7 | 15.9 | 15.9 | 15.9 | 15.9 | 19.0 | 
| 25 | 15.9 | 15.9 | 15.9 | 15.9 | 15.9 | 19.0 | 19.0 | 25.4 | 
| 32 | 15.9 | 15.9 | 15.9 | 19.0 | 19.0 | 22.2 | 22.2 | 28.6 | 
| 40 | 19.0 | 19.0 | 19.0 | 19.0 | 19.0 | 25.4 | 25.4 | 31.8 | 
| 50 | 19.0 | 19.0 | 19.0 | 22.0 | 22.0 | 28.6 | 28.6 | 38.1 | 
| 65 | 22.2 | 22.2 | 22.2 | 25.4 | 25.4 | 31.8 | 31.8 | 41.3 | 
| 80 | 25.4 | 25.4 | 25.4 | 28.6 | 28.6 | 31.8 | 35.0 | 44.4 | 
| 100 | 28.6 | 28.6 | 28.6 | 31.8 | 31.8 | 35.0 | 38.1 | 50.8 | 
| 150 | 31.8 | 31.8 | 35.0 | 38.1 | 41.3 | 44.4 | 50.8 | 63.5 | 
| 200 | 35.0 | 35.0 | 38.1 | 41.3 | 44.4 | 50.8 | 57.2 | 76.2 | 
| 250 | 38.1 | 38.1 | 41.3 | 47.6 | 50.8 | 57.2 | 66.7 | 88.9 | 
| 300 | 41.3 | 41.3 | 44.4 | 50.8 | 54.0 | 60.3 | 73.0 | 95.2 | 
| 350 | 44.4 | 44.4 | - | - | - | 63.5 | 79.4 | - | 
| 400 | 47.6 | 47.6 | - | - | - | - | - | - | 
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