centrifugal pump operation

[romotek@gmail.com]

Hello,

I really need your help:

I have a liquid filling machine that produces coolant fluid. the centrifugal pump (its parameters i can provide) sucks the liquid from the bottom of an IBC container. the bottom of the IBC is more or less at the same hight as the pump.
this is a small batch system that is not very operational since the demand is high for the coolant fluid.

Therefore a tank was constructed[4m3]. when it is full, the liquid level is 4 meters above the pump.

My worry is that because of the big hight difference the liquid pressure will over-flud the pump even if it is not operating and the liquid will pour out of the machine without any control.

I havent tested the tank yet, so my question is what do i need to do in order to know will the pump hold the pressure or not?

Thanks very much.

[Kelly_Bramble]

You need to determine the rated "Head Pressure" of the system and pump. The pump head pressure should exceed the fluid pressure and provide rated flow as required.

See:

Head Pressure Overview and Equations

Head Loss Darcy and Weisback Equations and Calculator