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How to Select the Suitable Water Pump

Date:2011-03-27 15:53

What is water pump? Generally speaking, the equipment that can raise the liquid, transmit the liquid or make the liquid increase the pressure can be called pump. The so-called pump changes the mechanical energy of the prime motor into liquid energy and thus realizes the purpose of pumping water. This equipment is widely used in all kinds of industries, such as water supply, construction, agriculture, electric station, chemical, petroleum, shipping and so on.

Owing to different functions, different liquid medium and different flow rates the structures of the water pump are certainly various. According to the working principles, it can be separated into spiral one, magnetic one, sliding vane one, axial one, wheel one, steam one and so on. On basis of functions, it can be classified into clarified water one, dredge one, chemical one and oil transfer one. There are also other ways for the classification of this equipment. For example, it can be separated into single stage one and multi-stage one according to the impeller connection.

Because there are so many kinds of Water Pump, it is of great necessity for people to know how to choose the suitable one. Here some suggestions will be introduced in the following. What comes first is to select the manufacturer carefully and consult the old users. When the user select the water pump, it is better to choose the point of sales which is approved by the agricultural machinery department. Meanwhile, the user should remember not to buy the product without manufacturer, production date and certificate. Or else, if the user meets the problem, he or she will be at a loss what to do. To consult the old user before buying the product is also wise way for the user.

Secondly, select the water pump that satisfies the requirement of pump lift. The so-called pump lift is the required pump increase, not the water lifting height. It is very important for the selection of the water pump. The pump lift is about 1.15 or 1.20 times of the water lifting height. When selecting the product, the customer should remember that the pump lift in the name plate is close to the required pump lift and the deviation is less than 20%. Under this situation, the efficiency of the water pump is highest and relatively economic. Thirdly, select the water pump with the proper flow rate. The flow rate can not be too great. Or else, the cost of the product will be increased. The used should select the product on basis of the need. For example, it is suggested to select the water pump with small flow rate if it is used in the household.

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