Choosing suitable AODD pumps can effectively reduce unnecessary expenses and waste. At the same time, it can also avoid delaying the production schedule due to the lack of equipment.
Although the AODD pumps are widely used, it does not mean that the AODD pump of a model or material is universal.
At present, the main materials of AODD pumps on the market are cast iron, cast steel, stainless steel, aluminum alloy, engineering plastics, fluorine plastics, etc. You can choose the AODD pumps of the corresponding material according to the fluid to be transported;
At the same time, the size of the diaphragm pump and the type of wearing parts (diaphragm, valve ball, valve seat, etc) should be selected with reference to the flow rate and temperature of the fluid being transported.
When choosing a diaphragm pump, attention should be paid to the size of the delivery diameter and the allowable particle diameter. Because if there are particles in the liquid, the diameter of the delivery pipe is too small which will cause a blockage or a flow rate that is smaller than required.
Selection Methold：
When choosing a diaphragm pump, attention should be paid to the size of the delivery diameter and the allowable particle diameter. Because if there are particles in the liquid, the diameter of the delivery pipe is too small, which will cause a blockage or a flow rate that is smaller than required.
When choosing a AODD pump for liquids with high temperature or low temperature, you must pay attention to the choice of diaphragm and ball valve seat. For example, the corrosion resistance of Teflon diaphragm is very good. But it is very poor in high temperature resistance. Teflon diaphragm is easy to shrink and soften when it encounters high temperature liquid. So it is not suitable for high temperature liquid.
When conveying corrosive liquids, it should be noted that the material of the pump body must not be wrongly selected. Otherwise, certain danger or loss may be caused. There are many kinds of materials for pneumatic diaphragm pumps. When choosing the material, you can refer to the material of the pipeline for conveying the liquid. At the same time, the diaphragm and the ball seat of the ball valve also need to be used together. For example, the common acid and alkali liquids choose engineering plastics and stainless steel materials. The diaphragm needs to choose PTFE, Teflon and other diaphragms and ball valve ball seats.
When conveying viscous liquids, you should choose a AODD diaphragm pump with a larger flow. Because the flow data of the AODD diaphragm pump is calculated based on the delivery of clean water. The flow rate of viscous or granular liquids is smaller than that of clear water.
To transport organic solvents, choose metal AODD pumps. If it is a highly corrosive and penetrating organic solvent, it is recommended to choose a perfluorinated pump, although it may cost more to buy a pump. However, the pump works stably and is not easy to be damaged, which can save a lot of follow-up expenses for the enterprise.
Air operated diaphragm pumps are inherently explosion-proof. No need to install explosion-proof motor, good sealing performance. Since there is no motor, the pump itself does not generate heat. It has good advantages for transporting volatile liquids, such as transporting alcohols.