Hi Richard,

It will depend on what the pump has to push against.  If it's a high
restriction, two pumps in series will have higher flow.  If it's low,
two pumps in parallel will have higher flow.  For unrestricted flow,
you are correct but you will get twice the maximum head pressure.

Bob W.

On Thu, 3 Mar 2005 08:12:02 -0800
"Richard Sohn" <unicorn@gdsys.net> wrote:

> Hi WP world,
>
> as far as I know, same pumps in series do not increase flow rate.
> FWIW
>
> Richard Sohn
> N-2071U
>

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