DYS-20(20A)系列低温升压调压阀此类型专用低温升压调节阀主要用于低温储槽、槽车和罐车的升压系统，广泛用于LNG、液态乙烯及其它低温介质，具有密封可靠、动作灵敏、压力稳定可靠和防静电的特点。
This type is special low-temperature step-down regulator is mainly used for low temperature storage tank, tank car and tank car step-down system, widely used in LNG, ethylene and other low temperature liquid medium, with reliable sealing, action quick, the characteristics of the pressure is stable and reliable, and anti-static.
主要技术参数 Main technical parameters
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 |
| 主密封件/Main seal |
PTFE |
| 型号 Model |
主要外形和连接尺寸 Main form and the connection size (mm) |
公称压力 Nominal pressure |
调压范围 Scope of pressure adjustment |
| |
H |
H1 |
W1 |
W2 |
M |
（MPa） |
（MPa） |
| DYS-20 |
239 |
192 |
100 |
Ф133 |
2-Rc¾ |
PN-4.0 |
0.2~0.8 |
| DYS-20A |
255 |
203 |
100 |
Ф133 |
2-Rc¾ |
PN-4.0 |
0.4~1.6 |