The high-pressure water mist fire extinguishing device is a fixed fire extinguishing system that uses water as the extinguishing medium, uses special atomizing nozzles, and decomposes water flow into small water droplets under specific pressure to extinguish the fire. It has the characteristics of high efficiency, economy, and wide application range, and can replace various traditional fire fighting means, such as gas, aerosol, superfine dry powder, foam, water spray, water spray, conventional fire hydrant and other fire extinguishing systems. At the same time, high-pressure fine water mist systems can also replace mechanical smoke exhaust devices, fireproof rolling shutters, water curtain systems, etc., which is an inevitable trend in the development of building fire protection. Wansheng Fire Protection has strong independent research and development capabilities, and has successively developed high-pressure fine water mist series components: high-pressure pump group, zone control valve, high-pressure fine water mist nozzle, high-pressure one-way valve, safety overflow valve, quick connector, filtration device, etc. The system has the advantages of high efficiency, water conservation, safety and environmental protection, and wide applicability. Its water consumption is only about 20% of that of the sprinkler system, and its fire extinguishing efficiency is 200 to 300 times higher; Has dual fire extinguishing effects of cooling and suffocation; Can wash smoke and toxic gases, shield thermal radiation; Can effectively extinguish Class A, B, C and electrical fires.