AY42H、HA802Y型安全溢流阀可用于高压注水泵的管路上，作为超压保护装置。
主要性能范围
| 型号 Type | 公称压力 Nominal pressure(MPa) | 开启压力分级 Opening pressure | 工作温度（℃）Working temperature | 适用介质 Suitable medium |
| AY42H-160 HA802Y-160 | 16.0 | 6.3-16.0 | 200 | 水、油品等 Water,Oil,goods etc. |
| AY42H-250 HA802Y-250 | 25.0 | 1.0-25.0 | ||
| AY42H-400 HA802Y-400 HA802Y-600 | 40.0-60.0 | 20.0-60.0 |
主要零部件材料
| NO. | 零件名称 Name of part | AQ-20 材料 Materials |
| 1 | 阀体 Body | 碳钢 Carbon Steel |
| 2 | 阀座 Nozzle | 不锈钢 Stainless steel |
| 3 | 阀瓣 Disc | 不锈钢 Stainless steel |
| 4 | 阀盖 Bonnet | 焊接件 Welding |
| 5 | 弹簧 Spring | 50CrVA |
外形及连接尺寸
| 型号 Type | 公称通径DN(mm) Nominal diameter | 尺寸Dimension(mm) | ||||
| Rc | ZG | L | L1 | ≈H | ||
| HA802Y-600 | 15 | 1/2″ | 1/2″ | 52 | 90 | 250 |
| 25 | 1″ | 1″ | 52 | 113 | 275 | |
| 40 | 11/2″ | 11/2″ | 52 | 157 | 336 | |
外形及连接尺寸
| 型号 Type | 公称通径DN(mm) Nominal diameter | 尺 寸 Dimension(mm) | |||||||||
| D | D1 | K | M | Z-Фd | B | L | L1 | RC | ≈H | ||
| AY42H-160 AY42H-250 AY42H-400 | 15 | 135 | 95 | 25 | M48×2 | 4-22 | 25 | 65 | 140 | 1〞 | 329 |
| 20 | 165 | 115 | 30 | M52×2 | 6-26 | 28 | 80 | 150 | 11/2〞 | 447 | |
| 25 | 200 | 145 | 38 | M80×3 | 6-29 | 40 | 90 | 180 | 2〞 | 485 | |
| 32 | 225 | 170 | 42 | M100×3 | 6-33 | 50 | 100 | 200 | 21/2〞 | 570 | |
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