You do enjoy destroying my credibility. How shallow and sad for you. You never hear or reply to my questions, poor man. This has been a unilateral communication for a while. You are the Pope and I am the unbeliever. It no longer matters to me as your attitude and the grid lock in Washington about the tax credits have caused me to retire. I would have continued in this thread, if you were not such an ass. I find no pleasure in offering opinions to have the fuehrer say I am wrong. I did have the math correct. BTW, you can not read nor remember, "there is no undersized pump.". Either/or means both to you. A picture of customer owned manifold show both flow meters and balancing valves with built in stab lock fittings.