铁制隔膜阀最小壳体壁厚
| 公称尺寸 DN |
公称压力 | |||
| PN10 | PN16 | |||
| 灰铸铁 | 球墨铸铁 | |||
| 阀体 | 阀盖 | 阀体 | 阀盖 | |
| 8 | 5 | 3 | 5 | 3 |
| 10 | 5 | 3.5 | 5 | 3.5 |
| 15 | 5 | 3.5 | 5 | 3.5 |
| 20 | 5 | 4 | 5 | 4 |
| 25 | 5 | 4 | 5 | 4 |
| 32 | 6 | 5 | 6 | 5 |
| 40 | 7 | 6 | 7 | 6 |
| 50 | 8 | 6 | 8 | 6 |
| 65 | 8 | 7 | 8 | 7 |
| 80 | 9 | 7 | 9 | 7 |
| 100 | 10 | 8 | 10 | 8 |
| 125 | 11 | 9 | 11 | 9 |
| 150 | 12 | 10 | 12 | 10 |
| 200 | 13 | 11 | 13 | 11 |
| 250 | 15 | 12 | 15 | 12 |
| 300 | 16 | 13 | 16 | 13 |
| 350 | 17 | 14 | 17 | 14 |
| 400 | 18 | 15 | 18 | 15 |