The air operated diaphragm pumps use compressed air as power source, and it is the most advanced type of diaphragm pumps in market for the moment. It adopts three-way air pilot valve to achieve real no dead stop and faster reversing. Compared with other traditional domestic pumps, it has larger flow rate, more stable operation, and smaller pulsation. It is widely applied in mining. to deal with all kinds of corrosive, volatile, flammable, poisonous fluids with particles and high viscosity.