[pHaestus]

I had a grasp for why JoeC was starting with 1.0GPM sans block and then recording how much flow rate dropped along with performance at the resulting flow rate. It isn't the way I personally do it, but it seemed like a good practical approach to streamlining testing. If a block A drops more in flow rate than block B then it's obviously more restrictive. But introducing another variable (a different pump used now) really makes it difficult for me to follow what JoeC is trying to convey with the results. For example the switch from 1048 to 1260 would have effects on final flow rates for RBX>>PolarFlo>MC5002>Slit Edge. Are these effects enough to shift C/W values? Dunno.

Or am I reading JoeC's tests incorrectly? I am assuming from the tables of data that he begins with a flow rate of 1.00GPM without block and that blocks will reduce flow rates by differing amounts depending upon resistance. Or are these two different tests?