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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.
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 |