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Blackeagle · 11-07-2003, 04:27 PM

Player0

Do you have flow regulation, not just the ball valve but some means of insuring that the flow (gpm) delivered to block A is the same flow as to blocks B, C ect?

Without accurate flow regulation you can never know whick block is really the better design. You will know which works best in your system and only a man having the exact same components as your system can depend on getting results anywhere close to yours.

If block A creates 4' of head loss vs block B with 7' of head loss when connected to a given pump they most surely will have VERY differant volumes of flow in the system you have.

While in a well controled set up both blocks can be tested at flow rates of say .5 gpm, 1 gpm, 1.5 gpm ect. up to say 3 gpm and then the results compared. Now you will know what these blocks will really do at each flow rate. And you can chart each blocks performance curves for your readers to make thier own comparisons.

If you use your ball valve without any means of messuring the flow to insure it's equal for each block, then all numbers that you are basing your results on are "smoke".

A accurate test not only will give repeatable numbers, and show which block is better, but will also offer the reader the oportunity to choose a pump wisely based on what the best flow rate found for his block of choice is. He can check differant pump makers PQ curve charts to find the one that will give him the performance (flow rate) he wants.

I agree with Joe, give your readership the benifit of the doubt, if asked most would take more accurate numbers over less accurate ones. Very few would choose option C) tell me what to buy with my own money, without accurate data supporting your position regarding my purchase.

11-07-2003, 04:27 PM	#160
Blackeagle Thermophile Join Date: Oct 2002 Location: U.S.A = Michigan Posts: 1,243	Player0 Do you have flow regulation, not just the ball valve but some means of insuring that the flow (gpm) delivered to block A is the same flow as to blocks B, C ect? Without accurate flow regulation you can never know whick block is really the better design. You will know which works best in your system and only a man having the exact same components as your system can depend on getting results anywhere close to yours. If block A creates 4' of head loss vs block B with 7' of head loss when connected to a given pump they most surely will have VERY differant volumes of flow in the system you have. While in a well controled set up both blocks can be tested at flow rates of say .5 gpm, 1 gpm, 1.5 gpm ect. up to say 3 gpm and then the results compared. Now you will know what these blocks will really do at each flow rate. And you can chart each blocks performance curves for your readers to make thier own comparisons. If you use your ball valve without any means of messuring the flow to insure it's equal for each block, then all numbers that you are basing your results on are "smoke". A accurate test not only will give repeatable numbers, and show which block is better, but will also offer the reader the oportunity to choose a pump wisely based on what the best flow rate found for his block of choice is. He can check differant pump makers PQ curve charts to find the one that will give him the performance (flow rate) he wants. I agree with Joe, give your readership the benifit of the doubt, if asked most would take more accurate numbers over less accurate ones. Very few would choose option C) tell me what to buy with my own money, without accurate data supporting your position regarding my purchase. Last edited by Blackeagle; 11-07-2003 at 04:39 PM.