"Problem students" sewage pump selection notice? 

[to answer] 1, clear water pump using the environment, choose the right pump type (generally is divided into wet and dry) 

2, calculate the pump head needed. Sometimes with some clients count the ground conveying distance into the lift, it is wrong, after the ground conveying distance multiplied by the coefficient of friction, can calculate into the lift. 

3, the pipe elbow wear, pipe friction are taken into account, such as these in the actual situation are different, to calculate accurately is also very trouble, so suggest leave some space, ensure the pump can hit the water. 

4, if you choose stainless steel sewage pump, but also make clear ChuShui ph including grain diameter etc, choose the appropriate stainless steel material. General material suitable for PH4 ~ 10, 304 more than the recommended range 316 or 316 l stainless steel. 

5, pumps must be used within the scope of rated head, but the load of motor. 

Real head needed, for example, is 30 meters, but the use of standard lift pump pumping less than 30 meters, all belong to the wrong method of use of this kind of circumstance, can cause motor overload, severe cases, electric burn the opportunity. 

6, water pump pipe must be clear, if pipe impassability also can cause the motor overload, severe cases can burn out motor.