BQZB plate qi means an automatic valve, automatic valve plate overview BQZB qi device is mainly composed of a two-way double-acting valve plate, two two two-way manual valve plate, plate check valves, safety valves and integrated base plate. 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 Installation: any direction Weight: 30Kg Connection: welded joints, welded joints, using standard JB6381.1-92