RAQ Series Gas Emergency Shut-off Valve
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The RAQ series gas safety shut‑off valve is an automatic cut‑off device. It provides emergency cut‑off protection in gas transmission and distribution systems. When the system pressure rises above or falls below the valve set value, the valve will automatically and rapidly cut off gas flow, protecting downstream pipelines and equipment from damage caused by over‑pressure or under‑pressure, so as to ensure safe gas utilization.
Features
‑ High actuation accuracy and fast response speed;
‑ Operates by pipeline network self‑pressure, no external energy supply required;
‑ Simple installation and commissioning, convenient operation and maintenance.
Main Technical Parameters
| Operating Pressure Range (MPa) | P≤8.0 |
| Actuating Pressure Range (MPa) | 0.001‑8.0 (5 adjustable grades) |
| Actuation Accuracy | ±1% |
| Response Time | ≤1S |
| Operating Temperature (℃) | ‑20 ~ +60 |
| Nominal Diameter Series DN | 50, 65, 80, 100, 125150, 200, 250, 300 |
Main Installation Dimensions
| Specification | Nominal Diameter | L | h | H | A | B |
|---|---|---|---|---|---|---|
| RAQ‑50G | DN50 | 250 | 112 | 514 | 130 | 160 |
| RAQ‑65G | DN65 | 260 | 112 | 514 | 130 | 160 |
| RAQ‑80G | DN80 | 280 | 145 | 550 | 130 | 160 |
| RAQ‑100G | DN100 | 350 | 154 | 580 | 130 | 160 |
| RAQ‑125G | DN125 | 360 | 154 | 580 | 130 | 160 |
| RAQ‑150G | DN150 | 450 | 198 | 650 | 130 | 160 |
| RAQ‑200G | DN200 | 450 | 198 | 650 | 130 | 160 |
| RAQ‑250G | DN250 | 580 | 241 | 716 | 130 | 160 |
| RAQ‑300G | DN300 | 580 | 280 | 800 | 130 | 160 |