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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 |