Yes and no.......The flow from 2 /2" pipes does not equate to flow
from 1, 1" pipe.

Restrictions and friction and length of runs to each individual nozzle
will come into play, so odds are to get flow out of the furthest one
that is decent and less flow out of the closest lesser restricted
nozzle you will need to add a valve to regulate flow to each fountain
head.

Most volume and prerssure will be lost at the first tap off and
fountain head.......then progressivley the same thing will happen at
the next and so on further down the line.......You also need to be
concerned with the actual flow rate of the fountain nozzles so they do
not exceed what is possible by your pump.

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"The original frugal ponder"
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