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此类型专用真空夹套低温截止阀主要用于防止低温和深冷介质的管路系统介质倒流，具有密封可靠的特点。
this type is special vacuum jacketed low-temperature globe valve is mainly used to prevent the pipeline system of low temperature and cryogenic medium medium flow back, has the characteristics of the sealing is reliable.
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:承插焊
| 主要零部件名称 main components name |
| 阀体/valve body：zg0cr18ni9 |
| 阀瓣/valve disc：0cr18ni9 |
| 阀盖/valve cover：0cr18ni9 |
| 主密封件/main seal：ptfe |
| 弹簧/spring：1cr18ni9 |
| 型号/model | 主要外形和连接尺寸/main form and the connection size (mm) | |||||||
| h | h1 | l | d0 | d1 | d2 | d3 | b | |
| dzh-25 | 78 | 131.5 | 90 | ф25 | ф32.5 | ф43.5 | ф82 | 8 |
| dzh-32 | 90 | 141.5 | 105 | ф32 | ф38.5 | ф53 | ф101 | 8 |
| dzh-40 | 99 | 173 | 120 | ф40 | ф45.5 | ф62 | ф101 | 8 |
| dzh-50 | 112 | 176.5 | 140 | ф50 | ф57.5 | ф72 | ф126 | 10 |