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classification
add：no.93 xianle road, zhujing town, jinshan district, shanghai
this type is special low temperature check valve is suitable for low temperature storage tank, tank car and tank car to prevent the reverse medium, is widely used in lng, ethylene and other low temperature liquid medium, has the characteristics of the sealing is reliable.
nominal pressure:4.0mpa
design temperature:-196℃～ 80℃
applicable medium:lng 、lo2、ln2、lar
connection method:butt welding
| main components name | materials |
| valve body | zg0cr18ni9 |
| valve disc | 0cr18ni9ti |
| main seal | ptfe |
| model | main form and the connection size (mm) | ||||
| a | b | d0 | d1 | d2 | |
| dh-65 | 112 | 216 | ф65 | ф70 | ф76 |
| dh-80 | 118 | 241 | ф80 | ф81 | ф89 |
| dh-100 | 138 | 292 | ф100 | ф100 | ф108 |