Also named Gas-liquid mixing pump, DAF pump, Ozone pump, Micro bubbles, vortex pump, Ozone mixing pumps1. Air suspension treating equipment, ozone water preparing equipment, and biological treating equipment; 2. Feeding of heating or cooling medium for various temperature adjusting devices; Various filters: sucking or high pressure transferring low viscosity liquid from underground tank, such as gasoline and various solvent; 3. Misting treatment of clear water, pure water, foods, chemical solution and waste solution; 4. Strict applications(continuous running, abrupt variation in hydraulic pressure):such as small scale stream boiler, high building water supply, high pressure water injection to high pressure tank, and suction from vacuum tank; 5. Sampling from river or tank, feeding bubbly liquid, liquid feed through long and horizontal pipeline, where air pockets likely occur.