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阀杆的最小直径标准（表3）_阀门标准
|
公称 |
公 称 压 力 PN |
|||||||
|
尺寸 |
16 |
20 |
25、40、50 |
63、64 |
100、110 |
150、160 |
250、260 |
420 |
|
DN |
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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