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对夹式止回阀 铁制对夹旋启式止回阀及铁制对夹蝶式止回阀阀体的最小壁厚_阀门标准
对夹式止回阀 铁制对夹旋启式止回阀及铁制对夹蝶式止回阀阀体的最小壁厚
| 公称尺寸 DN |
公称压力 PN |
|||||
| 2.5 |
6 |
10 |
16 |
25 |
40 |
|
| 阀体的最小壁厚/mm |
||||||
| 灰铸铁、球墨铸铁 |
球墨铸铁 |
|||||
| 50 |
6 |
8 |
8 |
8 |
8 |
9 |
| 65 |
6 |
8 |
8 |
9 |
9 |
10 |
| 80 |
6 |
9 |
9 |
10 |
10 |
11 |
| 100 |
8 |
9 |
9 |
11 |
11 |
12 |
| 125 |
9 |
10 |
10 |
12 |
12 |
13 |
| 150 |
9 |
10 |
10 |
14 |
14 |
15 |
| 200 |
10 |
12 |
12 |
15 |
15 |
16 |
| 250 |
12 |
13 |
13 |
— |
— |
— |
| 300 |
13 |
14 |
14 |
— |
— |
— |
| 350 |
14 |
15 |
15 |
— |
— |
— |
| 400 |
14 |
16 |
16 |
— |
— |
— |
| 450 |
15 |
17 |
17 |
— |
— |
— |
| 500 |
15 |
18 |
18 |
— |
— |
— |
| 600 |
16 |
20 |
20 |
— |
— |
— |
| 700 |
20 |
24 |
26 |
— |
— |
— |
| 800 |
20 |
24 |
26 |
— |
— |
— |
| 900 |
22 |
25 |
28 |
— |
— |
— |
| 1000 |
22 |
26 |
30 |
— |
— |
— |
| 1200 |
23 |
26 |
— |
— |
— |
— |
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