How to choose the head of the pump

How to choose the head of the pump

     The head of the centrifugal pump is also called the pressure head of the pump, which is the energy obtained by the

 unit weight of fluid through the pump. The head depends on the structure of the pump, such as the diameter of the

impeller, the bending,and the rotational speed.

     The pump head is about 1.15 ~ 1.20 times of the lifting height.If the water is 20 meters vertical to the ground, the 

required head is about 23 ~ 24 meters.When selecting the pump, the head of the pump should be close to the required

head.The general deviation is not more than 20%,In this case, the  pump is the most efficient,and it is more economical

 to use,If the head is much less than the required head,the pump often fails to meet the needs of the user,even if the

 water can be pumped up,the water is very small,If high head water pump used for low head,will lead to motor overload

 flow is too high if the long-running motor temperature,winding insulation will gradually aging,and even burning motor.