No matter what pump selection, you must know the flow and pressure. Flow refers to the amount of water use. The pressure refers to how much pressure is needed when the amount of water is needed. The pressure and raising can be converted: 3 kg of pressure = 30 meters of raising = 0.3MPa. For non -professional person, you do n’t know that traffic and pressure are normal, but you must know some of the situation at the scene: for example, municipalities exist in the outer diameter of water pipes, the number of water uses, the number of water uses, and the level of transporting to the final water point. The distance and height, the outer diameter and the material of the tube used in the final water dot pipe. These parameters are definitely enough to analyze parameters such as specific flow and raising and materials. After knowing the two core selection elements of traffic and raising (pressure), the selection type is a matter of minutes. As for the variable -frequency automatic pressure -booster pump of the vertical or horizontal structure, this depends on your choice. Generally: the same flow and the variable frequency automatic pressure -booster pump, the horizontal structure is nearly half cheaper than the vertical structure.