止回阀系列
黄铜丝口止回阀401A| DN | INCH | d | L | H |
| 15 | ½" | 13 | 49 | 31.5 |
| 20 | ¾" | 17 | 58 | 36 |
| 25 | 1" | 23 | 69 | 43.5 |
| 32 | 1¼" | 28 | 76 | 45.5 |
| 40 | 1½" | 33 | 83 | 52 |
| 50 | 2" | 44 | 92 | 57.5 |
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