1, select the standard Coolant Pump water pump is the national standard based on ISO requirements, development, implementation of the latest model of the pump. Its main characteristic is small size, light weight, excellent performance, easy operation, long life, low power consumption. It represents the latest trend of the current pump industry. When the user selects the pump, it is best to point of sale approved agricultural sector, we must recognize the manufacturer. Proposed purchase of preferred water-filled submersible electric pump, and to see the brand and product quality certification. Do not buy the "three no" (ie, no manufacturer, no production date, no production license) products, otherwise there is a problem, the user will do nothing.
 
2, according to the local power supply conditions to determine the three-phase single-phase pump or pumps.
 
3, the pump head selection is required to lift the so-called head, not to mention the water height, clear that the selection of the pump is particularly important. To enhance the Coolant Pump head height of about 1.15 to 1.20 times. If a water source to water at the vertical height of 20 meters, the required head is about 23 to 24 meters. Pump should be selected to make the best head on the pump nameplate and the required head close to this case, the most efficient pump use will be more economical. But not necessarily require absolute equality, generally do not exceed 20% deviation, the pump can be the case in the more energy-saving work.
 
4, how to lift a good choice nameplate nameplate rose far less than the required range of a pump head, often can not meet the user's wishes, even if the Sheung Shui to pumping, the water will be tiny, perhaps even becoming a non- arena of the "free pump." The higher the pump head is the better buy? It is not. High lift pump for low lift, there will be heavy traffic, resulting in motor overload, if the long-running, the motor temperature increases, the winding insulation layer will gradually aging, and even burning motor.
 
    5, choose the right pump flow rate of pump flow, that is out of water, the general election should not be too large, otherwise the pump will increase the cost of purchase. Concrete analysis of specific issues should be such as to use the user's own draft of the self-priming pump, flow rate should be smaller as much as possible; such as user irrigation submersible pumps, you can select the appropriate flow of larger ones.