[DigitalChaos]

your final answer will be you trying both configs... and seeing what provides the best results.



but the "pressure" (what your really looking at is velocity/speed) remains constant through your entire loop UNLESS you start splitting the stream.

but think of it this way... if 1" of water goes in at the beginning of the loop, 1" of water must come out at the end of the loop.. and it will come out at the same speed as it is comming in.

when you split the flow into 2 lines.. that 1" going in at the beginning looks like 1/2" to each line (this also means half the velocity of water). of course at the end everything combines back into one line.. and its that 1" of water again.

now the resistance of the split.. the bends, and anything else that slows down your stream... this will effect the ENTIRE LOOP.
If you make a kink in your line, your not just slowing down the velocity after the kink.. the entire loop slows down.