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石油、石化及相关工业用钢制截止阀和升降式止回阀 阀杆的最小直径_阀门标准
石油、石化及相关工业用钢制截止阀和升降式止回阀 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 |
24.0 |
25.4 |
25.4 |
28.6 |
28.6 |
31.8 |
35.0 |
44.4 |
| 100 |
28.0 |
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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