用途：
本阀适用于公称压力≤1.6MPa 的管路上，能自动阻止流体倒流。
Uses:
This valve is applicable to nominal pressure ≤ 1.6MPa the pipeline, can automatically stop the flow back.
注：DN65以上以电话联系为准。
外形尺寸和连接尺寸:
Dimensions and connection dimensions:
| 型号 | 公称通径(mm) | 尺寸(mm) |
| L | A | S | G |
| H14W-16P | 15 | 65 | 13 | 28 | Rc1/2 |
| 20 | 72 | 14 | 34 | Rc3/4 |
| 25 | 88 | 16 | 42 | Rc1 |
| 32 | 105 | 21 | 52 | Rc11/4 |
| 40 | 125 | 21 | 60 | Rc11/2 |
| 50 | 128 | 21 | 72 | Rc2 |