How To Select The Right Submersible Pump?

Size a submersible pump sounds like an overwhelming thing to do. But in reality, as long as you have the basic information, it's not that hard to do.

"What is your required / desired flow (GPM)?"

Determine TDH (Total Dynamic Head)

Step One: Pipe Friction Loss = total length (X) friction loss (straight pipe) factor + friction loss (fittings)

Friction loss = (_____’ X _____’/_____’) + (__’ X __)

Friction loss = _____’ + _____’

Friction loss = _____’ Head Pressure

Step Two: Desired Operating Pressure. Convertise PSI in to TDH ( PSI x 2.31 )

____ PSI x 2.31 = ______ TDH 

Step Three: Now that we have all the information, add all calulated values to get TDH:

TDH = pumping level + vertical rise + friction loss+pressure in TDH

TDH = _____’ + _____’ + _____’+______'

TDH = _________’

Step Three: Now that we know the TDH and required/desired flow, we can select a pump from a performance curve.

Which Submersible Pump / Motor HP combination will deliver _____GPM at the calculated TDH?