Classification
Add：No.93 xianle road, zhujing town, jinshan district, Shanghai
This type is special vacuum jacketed low-temperature emergency cut-off valve is mainly used for cut off the medium flow on low temperature storage and transportation, especially in the event of a fire failure can cut off the medium in a timely manner. With flexible switch, reliable sealing and anti-static characteristics.
Nominal pressure:4.0MPa
Design temperature:-196℃～+80℃
Applicable medium:LNG 、LO2、LN2、LAr
Connection method:Socket welding
| Main components name |
| Valve body：ZG0Cr18Ni9 |
| Valve disc：0Cr18Ni9 |
| Valve cover：ZG0Cr18Ni9 |
| Valve stem：0Cr18Ni9 |
| Main sea：PTFEI |
| Model | Main form and the connection size (mm) | ||||||||||
| H | H1 | H2 | D0 | D1 | D2 | D | M | W1 | W2 | B | |
| DZQ -25 | 194 | 492 | 131.5 | Ф25 | Ф32.5 | Ф82 | Ф100 | Rc¼ | 90 | Ф130 | 8 |
| DZQ -32 | 203 | 501 | 141.5 | Ф32 | Ф38.5 | Ф101 | Ф100 | Rc¼ | 105 | Ф130 | 8 |
| DZQ -40 | 230 | 578 | 173 | Ф40 | Ф45.5 | Ф101 | Ф125 | Rc¼ | 120 | Ф160 | 8 |
| DZQ -50 | 236 | 584 | 176.5 | Ф50 | Ф57.5 | Ф126 | Ф125 | Rc¼ | 140 | Ф160 | 10 |
