Diaphragm pump, also known as the control pump, is the main type of actuator. It uses a power operation to change fluid flow by accepting the control signal from the control unit. Diaphragm pump generally by the implementing agencies and valves. The use of compressed air as the power source, for a variety of corrosive liquids, with particles of liquid, high viscosity, volatile, flammable, highly toxic liquid can be smoked exhausted. Pneumatic diaphragm pump has four materials: plastic, aluminum, cast iron, stainless steel. Electric diaphragm pump which has four kinds of material: plastic, aluminum, cast iron, stainless steel. Diaphragm pumps are based on different liquid media were nitrile rubber, neoprene, Viton, polyvinylidene fluoride, polyhexamethylene. To meet the needs. Placed in a variety of special occasions, used to pump the kind of conventional pump can not suction medium.