此类型专用低温安全阀主要用于低温介质管路安全排放系统，具有开关灵活、密封可靠的特点。
These low-temperature stopping valves are mainly used in pipeline systems with low-temperature and deep cold mediums.featured in its flexible operation and reliable sealing.
主要技术参数 Main technical parameters
公称压力/Nominal pressure：4.0MPa
设计温度/Design temperature：-196℃～+80℃
适用介质/Applicable medium：LNG 、LO2、LN2、LAr
连接方式/Connection method：螺纹
| 主要零部件名称 Main components name | 材料 Materials | |
| 阀体/Valve body | ZG0Cr18Ni9 | |
| 阀瓣/Valve disc | Hpb59-1 | |
| 型号/Model | 主要外形和连接尺寸/Main form and the connection size (mm) | 整定压力（MPa） | |||||
| H | H1 | M | M1 | L | D | ||
| DA-25 | 144 | 82 | M33*2 | M36*2 | 40.5 | Ф53 | 0.88 |
| DA-25A1 | 144 | 82 | M33*2 | M36*2 | 40.5 | Ф53 | 1.76 |
