QZB qi means an automatic valve, automatic valve Overview QZB qi device consists of a two-way electric valve, two manual ball valves, check valves, safety valves and other components. It hydraulic device for hydropower or other energy storage devices for automatic qi, in order to maintain its internal gas-liquid ratio. Second, the technical parameters Rated pressure: 4.0MPa, 6.4MPa, 9.0MPa Medium: Air Diameter: 15mm Working Pressure: 0.05MPa Ambient temperature: 0 ~ 40 ℃ Relative humidity: ≤95% RH Operating voltage: AC220V AC110V DC220V DC110V DC24V Action time: 15S mounting direction: Any direction Weight: 14Kg Connection: welded joints, using JB6381.1-92 standard, sleeve joints, using standard GB3733.1-83