pumps in parallel 1

[pipestead]

does 3 or more pumps of the same size in parallel series add
to the gpm's?

 

[Artisi]

Yes, but if it is an existing system it is very unlikely to be 3 times the flow rate.

 

[NGLENGR]

When you add pumps together, remember that the system curve dictates what the actual flow will be. Artisi is correct in saying that it will be unlikely you will have 3 x pump flow.

The curves are additive, but the system will dictate the actual flow performance.

I made this curve for a system we have in my facility. The numbers are a little off, but it works for illustrating the situation.