On 2010-08-12, Gil wrote:

But, as in the OP's case, he mentioned feeding 1" pipe from 3/4" pipe
and you will not get any more flow than the 3/4" pipe is providing.
although the friction loss in the 1" pipe is less that that in the 3/4"
pipe the gpm flow through the 1" pipe is not going to be any greater
than that received from the 3/4" pipe.

Sorry, that's not how it works. For a constant pressure source, less
friction loss gives more flow.

It's like resistors in series (V = pressure, I = flow) connected to a
constant voltage source, except for each "resistor" the V-I relation
is roughly V = I^2 R.

Wayne